® The Physics News 2008 Eberly College of Arts and Sciences December 2008 Issue 4 Bill Wallace (1942-2008) William E. (Bill or Wally) Wallace died suddenly during the summer of 2008 while on a family vacation. Bill had a successful career as a research scientist studying the health effects of fine particles. Bill was a proud husband, father and grandfather, and had many interests in literature, music, and people in general. Bill had an astounding ability to attract and welcome people from different walks of life and keep them as friends throughout his life. First - the physics. Bill completed his PhD in Physics at WVU in 1969, with a dissertation on spin-lattice relaxation in lithium-magnesium alloys under Professor William Vehse. He had entered WVU in 1959, along with a cohort of students excited about engineering and physics by the Space Race kicked off two years earlier by the Soviet Union’s Sputnik, the first human-built Earth satellite. We were part of that cohort. In the WVU Physics Department, introductory courses were taught by Professors Stanley Farr and Harvey Rexroad. Professor Rexroad’s courses were particularly challenging. O. Rex Ford was the patriarch of the department. Charles Thomas, the chairman, taught introductory modern physics and fascinated us with his beautiful blackboard writing. William Vehse taught thermodynamics and statistical mechanics. Art Pavlovic taught solid state physics, Douglas Williamson classical mechanics, and Oleg Jefimenko electricity and magnetism. As an undergraduate, Bill was not particularly excited about making good grades. But Bill went a step beyond most of us at the time. He stud- Bill Wallace ied and shared with us the stories of the people behind the theories: their lives, idiosyncrasies, and personal hardships. And he always seemed to manage to make a connection with the early Greek philosophers and the classics. “We have to place all this in context, guys!” he would tell us time and again. In graduate school, Professor Arnold Levine’s quantum mechanics and theoretical nuclear physics courses were viewed as the most challenging. Some of us, including Bill, concluded that we might never understand these theories, but that we must learn to accept and use them. Bill did his MS and PhD research in Professor Vehse’s lab in Room 325 of the Physics Building, now known as Hodges Hall. Larry Stenger, a student in the same lab, when asked by Professor Vehse how a probe should By Larry Headley and Jim Smith be designed, replied “well, in a real lab, we would... .” Room 325 became known as the “Real Lab”. The lab was a gathering place for other grad students because it was larger than most and because of Bill’s friendliness and Professor Vehse’s acceptance. Bill befriended most of the physics graduate students at WVU at the time as well as many of the faculty. Bill shared apartments or houses with several physics and math students in “affordable” Morgantown areas. As a graduate student, Bill met his wife-tobe and lifelong love, Elisabeth Fehl of Pittsburgh. In 1969, Bill accepted a National Research Council (NRC) postdoc to do nuclear magnetic resonance (NMR) research at the U. S. Bureau of Mines lab in Morgantown (now part of National Energy Technology Lab [NETL]). In 1970, Bill wrote a paper on NMR pulse techniques that drew the attention of Paul Lauterbur, who offered Bill a postdoc at SUNY Stony Brook. Laut- In This Issue Grants Awarded ..............................2 Chair’s Corner..................................3 Physics Department to Relocate.......4 New Associate Editor............................. 4 Exoplanets Discovered . ...................5 Professor Nancy Giles Departs.........5 Highlighting the Staff.......................6 Graduate Students Honored.............7 Radio Burst Discovered....................8 Professor Littleton Retires................9 Two New Professors.......................10 2 erbur was beginning work on magnetic resonance imaging (MRI). Bill turned down the offer. MRI seemed at the time like an interesting curiosity to those of us doing “real NMR”. Lauterbur shared the 2003 Nobel Prize for that work. Bill became motivated to do health effects research after the Farmington Mine Disaster http://en.wikipedia.org/wiki/ Farmington_Mine_disaster) while at the Bureau of Mines lab and began collaborative research with the NIOSH lab in Morgantown, while managing research at NETL. Bill finally moved to NIOSH in 1980, leaving a promising management career for hands-on research. After moving to NIOSH, Bill’s career was focused on pulmonary health effects research with coal dust, diesel soot, and surrogates and Bill established an international reputation in that field. Bill published more than 50 papers and with his team received numerous NIOSH awards. Bill worked closely with researchers in China on mining dust hazards and in 2005 was named an Honorary Professor at Tongji Medical College in Wuhan, China. Bill was an adjunct professor with the WVU Chemical Engineering Department. Bill was an advisor with the WVU Physics Department and helped arrange collaborative research and equipment gifts to the department. Outside of his research, Bill was involved in community activities, from volunteering for the Salvation Army and United Way to participating in a Great Books reading group. Bill’s family was most important to him and Bill enjoyed family activities with his wife Elisabeth (Betsy), his children David Wallace and Sarah Hewes, Sarah’s husband Karl, two grandchildren, Corinne and Colin Hewes, and his extended family in WV and NC. Bill remained in close contact with many friends from his WVU Physics Department days, sharing his own research and vision, encouraging them as their careers grew and developed, and often challenging them with his own ideas on their work. This article will mention a few of those friends: apologies to those not mentioned. Bill enjoyed traveling to Scotland for cultural discussions, hot-air ballooning and single malt Scotch at a castle owned by his long time friend and grad school roommate, Addison Fischer. A math major at WVU, Addison developed parallel processing methods for the first WVU computer systems (IBM 360) and later applied his mathematical (and management) talents to the burgeoning computer security industry (http:// wvutoday.wvu.edu/news/page/6822/). Many other close friends received their graduate degrees in the WVU Physics Department and kept in touch with Bill. Larry Stenger (PhD, 1970) of the Real Lab was an R & D executive for Gulf/Chevron. Harry McKinney (PhD, 1972) did research with Professor Atam Arya and also helped develop the first computer systems at WVU; he went to work for IBM before launching his own company. Jim Smith (PhD, 1969) studied under Professors Rexroad and Vehse and, with Bill having inspired his early interest in biophysics, established the radiation health effects branch at the U.S. Centers for Disease Control continued on page 3 Maura McLaughlin and Duncan Lorimer Awarded Grant In June, 2007, faculty members Maura McLaughlin and Duncan Lorimer, both radio astronomers, received almost half a million dollars through the WVEPSCoR Research Challenge Grant. The grant, renewable for up to five years and worth 1.4 million dollars over that period, will be used to provide graduate and undergraduate support, purchase new hardware and computers, and engage specialized personnel at the Center for Astrophysics at WVU. In fulfillment of the latter, Dr. Paulo Freire, a Senior Research Associate from Arecibo Observatory, has been hired as a Research Professor, and Dr. DJ Pisano, from the National Radio Astronomy Observatory (NRAO), will start as an Assistant Professor in January. “We are very excited as it will really allow us to get the new Center for As- From Left to Right: Duncan Lorimer, Finlay Lorimer, Maura McLaughlin, and Callum Lorimer. trophysics off the ground,” McLaughlin said. “This will greatly expand the breadth of the Department of Physics over the next few years.” McLaughlin and Lorimer currently study pulsars and the exotic phenomena associated with them, taking particular advantage of the nearby Green Bank Telescope at the National Radio Astronomy Observatory in nearby Green Bank, WV. “Our searches with the Green Bank Telescope should allow us to find new pulsars which offer unique and exciting physics applications,” says McLaughlin. “We hope to discover the first pulsars in other galaxies and the first pulsar and black hole binary system. This research will strengthen the physics program and attract talented graduate students to WVU through our partnership with the NRAO.” 3 Chair’s Corner Earl Scime, Department Chair What an exciting time for physics here at WVU. In this issue of the WVU Physics Newsletter, you will find stories about the successes of our current and former students; the recent retirement of Jack Littleton, one of our longest serving faculty; the successes of our research programs; and initial planning for our move to a new physics facility. Although Professor Mohindar Seehra also retired in 2008, he transitioned to a research professor position and continues to maintain a very active research program. We will have an extensive review of Professor Seehra’s impressive WVU career in our next edition of the WVU Physics Newsletter. Since the last issue of the Newsletter, we are pleased to report that WVU Physics is now ranked in the top 100 federally funded physics departments according to the NSF and among the top 100 physics graduate programs by U.S. News and World Report; that the number of students obtaining BS and BA degrees in physics continues to rise; that we had our best recruiting year for graduate students in 2007; that two more physics faculty have been named as Robert C. Byrd Professors of Physics (Thomas Myers and Earl Scime); that Professor Nancy Giles received the Benedum Award for research in the physical sciences; that the department sponsored middle-school robotics team won the state championship for the third straight year; that Professor Maura McLaughlin was named a Alfred P. Sloan Fellow; that Professor Sergei Urazhdin was named a Cottrell Scholar and also received a NSF CAREER Award; and that we hired two outstanding new assistant professors in 2008 – Dr. Paul Cassak, a theoretical plasma physicist and Dr. D.J. Pisano, an astrophysicist. So what about this new facility for physics? Well, the plan right now is for the entire department to move from Hodges Hall into a completely renovated White Hall (just south of the library) in 2010 or 2011. As this Newsletter goes to press, the process of designing the interior of the building is underway. The prospect of moving an entire department is both exciting and a bit daunting. As chair, my biggest concern is that we end up with a facility that is capable of supporting all our research and teaching programs in a manner that improves the quality of “life” for the students, researchers, staff, and faculty. If you ever considered donating funds in honor of a former mentor, colleague, or family member, now is the time to consider endowing the new undergraduate student study area; the new planetarium; the undergraduate teaching laboratories; and the conference rooms throughout the building. Gifts to such facilities will have a lasting impact on the quality of experience obtained by future generations of WVU students. In the last five years, we have been honored to receive gifts to fund two new undergraduate scholarships in physics, a new graduate fellowship in physics, and the endowed Carroll Chair in Physics. These gifts have made a real difference in our ability to recruit the very best students and faculty to WVU. I have no doubt that gifts directed toward the new facility will have equally important impacts on the WVU physics program. As always, we welcome visits by alumni passing through town. We especially hope you will visit us in our new facility when it opens. Oh, and don’t forget the department website (physics.wvu.edu). Professors Urazhdin and Lederman oversaw a dramatic facelift of the site recently and now Professor McLaughlin is leading the effort to keep it updated – so drop by for a look sometime and learn about our featured alumni and the latest WVU physics news. Because so much seems to be happening in our department right now, I have agreed to serve another 5-year term as department chair. Thankfully, my colleagues continue to be extremely supportive and I have been able to continue to work with my students and maintain my research program. The tremendous accomplishments of the WVU physics students and faculty make the job of chair worthwhile (even on those days filled with seemingly endless meetings). I hope you are as proud as I am about the successes of our students, alumni, and faculty. Please stay in touch. With Regards, Earl Scime Bill Wallace (1942-2008) (continued from page 2) in Atlanta (http://www.cdc.gov/nceh/ radiation). David Close (MS, 1967) did research with Professor Rexroad, later receiving a PhD at Clark University before becoming a tenured physics professor at East Tennessee State University. Linda Condry (MS, 1978; one of the few women in physics at the time) and her husband Patrick, who graduated from WVU Medical School, live in upstate New York where Pat is a physician. Don Campbell (MS, 1967) is a research scientist and was a co-worker at NIOSH. Of the four grad students with whom Bill roomed in the “physics house” on Falling Run Road, Tom Nicely (MS, 1966) completed a PhD in applied math at the University of Virginia, achieved fame for finding the math flaw in the first Pentium chip, taught at Lynchburg College and maintains a prime number research homepage (http://www. trnicely.net). Martin Nagel (MS, 1966) went into the electronics business in Cleveland. Larry Headley (PhD, 1969) worked with Bill at NETL, helped with Bill’s first biophysics research project and later became director of in-house R&D at NETL. Joel Groves (MS, 1966) completed a PhD at the University of Illinois-Urbana and worked at Schlumberger research labs. Bill seemed unafraid of any challenge and able to keep his head in any situation. Some of his unique abilities were undoubtedly shaped by his ordeal with polio as a child of ten. Bill has written of his stay in the Marmet WV polio hospital in the article “In Isolation”, (Now and Then, Spring 2000, http://www. etsu.edu/cass/nowandthen/apphealth. asp). Bill’s own words are highly recommended to those with interest in a stirring true story of overcoming adversity. When Tom Nicely heard about Bill’s passing, he said “He will continue to be in my thoughts and my heart as long as I am breathing.” Well said. 4 Physics Department to Relocate Soon the physics department will move from Hodges Hall to a newly renovated White Hall. Designs for the renovation were completed this year and initial demolition of its interior began in July. Over the past two years, the Department of Geology and Geography and other occupants of White Hall have found new homes on campus. The $30 million university budget allocation for the demolition and renovation of over 50,000 sq ft of White Hall will accommodate all of the research, office, classroom, and introductory laboratory space for Physics, with approximately 3,000 square feet of space left over for future expansion. The state-of-the-art research facilities, teaching laboratories, and classrooms will meet the needs of the Department of Physics in these initial years of the 21st century. The new facilities will include significantly increased clean room space, adequate electrical infrastructure, a multi-user computer cluster facility, expanded shop facilities, an integrated undergraduate teaching laboratory – including an expanded advanced laboratory facility, an expanded planetarium, and vibration isolated laboratories for sensitive microscopy and optical laboratories. Even with the significant university investment in White Hall, The Department of Physics is actively seeking ad- ditional funds to ensure that all research laboratories; faculty, staff, and student offices; undergraduate teaching laboratories; planetarium and observatory; and administrative offices will be able to move to White Hall. Moving all our laboratories will be a challenging, time consuming, and expensive process. In addition, the infrastructure for some White Hall during renovations facilities, such as the new 60-seat planetarium, is not fully funded. Hodges Hall is fully occupied and there is no room for future expansion. Even with the challenges of new construction and moving, the White Hall project is crucial to the future of WVU Department of Physics and we are excited about the move and the potential for future growth. Don’t forget to visit us in our new home! Hodges Hall New Associate Editor: Grandson of Former Chair It is a great pleasure for his grandson from adminme to be engaged by Dr. istrators, faculty, and staff. Boyd Edwards as AssociDuring my initial interview ate Editor of the Physics with Dr. Edwards, he told Department Newsletter. My a brief story of assistance previous connection with received from my grandfathe department had been ther when first settling in indirect, through my grandMorgantown in 1986, which father, Arthur Pavlovic, who is remarkable only when served as its chair for many seen together with the other years. I have now had the numerous instances of his Dwight Pavlovic good fortune to benefit from good nature as recollected his legacy and I find myself constantly by other colleagues and friends of his surprised by the recognition I receive as whom I have encountered at one time By Dwight Pavlovic or another. Though my personal activities have spread themselves over the English and Philosophy Departments and the Religious Study Program, the latter being where I pursue my formal major as a sophomore, it is my tremendous pleasure to now be employed by the department which my grandfather led and continues to serve as an Emeritus Professor and through his research into the department’s history. I hope to emulate the same qualities he exemplified, in my efforts on the department newsletter. 5 WVU Graduate Leads Study of Exoplanets Beginning in 2005, Dr. Indeed, the first world, Jeremy Richardson, a 1997 HD 209458b, unofficially graduate from the Physics called Osiris, is larger than Department and a 1995 Jupiter, though less massive, Goldwater Scholar, led one but orbits its sun at a radius of three teams at NASA’s that is eight-times smaller Jet Propulsion Laboratory than Mercury’s orbit of and California Institute of ours. Osiris completes a Technology in a study of full orbit in just 3.5 days, two exoplanets. Both bodies enjoys a surface temperaare gas giants that were deture of more than 1,000°C, tected by distortions in the Dr. Jeremy Richardson and was the first transiting appearance of their parent exoplanet discovered. The stars when these planets pass in front of second, HD 189733b, is only slighter them from Earth’s point of view. These more massive than Jupiter and roughly passages are called transits. This detecthe same size, but is even closer to its tion technique is currently limited to sun than Osiris, completing an orbit in large planets. only a little more than 2 days. Dr. Richardson’s study was the first of its kind to examine exoplanetry atmospheres, and revealed that water is absent in the atmospheres of both planets. The presence of water is a factor intimately connected with the search for extraterrestrial life, as it is currently thought to be essential for the development of life, leading some to characterize Richardson’s study as a “dress rehearsal” in this wider search. After graduating from WVU in 1997, Dr. Richardson attended the University of Colorado at Boulder, receiving his masters in 2000 and PhD in 2003. He is currently transitioning from astronomical study to climatology. Professor Nancy Giles Departs After serving for almost twenty years as a faculty member in our department, Professor Nancy Giles has recently announced that she will be moving to the Air Force Institute of Technology (AFIT), located at the Wright-Patterson Air Force Base in Dayton, Ohio. She will serve as Professor and Head of the Engineering Physics Department at AFIT. The Engineering Physics Department at AFIT currently employs 21 faculty members, offers masters and doctoral degrees, and maintains extensive research projects including remote sensing, laser, materials physics, and nuclear technology. Professor Giles will continue collaborations with WVU physics faculty in experimental solidstate physics at WVU. Current projects supported by the National Science Foundation and Oak Ridge National Laboratory will continue to receive her input and advising of students at WVU for the coming year. Professor Giles received her B.S. in Physics from the University of North Carolina at Chapel Hill and her Ph.D. in Physics from North Carolina State University. She joined the Physics Department at West Virginia University as an assistant professor in August of 1989, and was promoted to the rank of full professor in 2001. Beginning in January 2007, Professor Giles has been serving as Associate Chair of the WVU Physics Department. Dr. Giles has received West Virginia University’s highest awards in both teaching and research. In the spring of 2007, she received the WVU Benedum Distinguished Scholar Award for her research in optical and compound semiconductor materials. Her previous honors include the WVU Foundation Outstanding Teacher Award in 1998 and the Eberly College of Arts and Sciences Outstanding Researcher Award in 1997. Thus far in her career, she has published over 150 refereed papers and 16 conference papers, with over 100 of these being written since joining the faculty at WVU. She has had 9 PhD students and 4 MS students complete their degrees under her supervision at WVU. While at WVU, Professor Giles established an experimental research program to study optical properties of semiconductors and laser materials. Her research focuses on the optical and magnetic resonance spectroscopy of point defects in these materials. Recent published work has included three particular materials systems: zinc oxide (ZnO), a wide band-gap II-VI semiconductor with potential for use as ultraviolet/blue light-emitting diodes, lasers, and detectors; cadmium germanium arsenide (CdGeAs2), an infrared nonlinear optical material for frequency tunable lasers spanning the mid-infrared; and transition-metal-ion doped II-VI semiconductors (ZnSe:Cr, Fe, Co) for optical saturable absorber and laser applications in the 1 to 5 micron spectral region of the near-infrared. A common theme of Prof. Giles’ research is the search for an understanding of the electronic structure of the point defects controlling the optical and electrical properties of materials. These point defects often cause unwanted absorption bands in materials that would otherwise be suitable for lasers. Point defects can also produce radiative recombination sites that offer the potential for wavelength tuning over wide spectral regions (as with the doped II-VI compounds). The WVU Physics Department wishes her well in her new position. 6 Highlighting the Department Staff The staff of the Physics Department is a group of dedicated individuals whose service is crucial to the success of the department. We here feature these individuals and salute their devoted efforts. Siobhan Byrne was born and resides in Pennsylvania and has worked almost three-decades for WVU, more than two of them as Administrative Secretary of the Physics Department, processing payroll and travel requests. She assists the Chair, Dr. Earl Scime, with numerous day-to-day operations that allow the department to function smoothly. Outside of the university, she enjoys spending time with her three grandchildren and her daughter Erica. John Hopkins manages the department’s Academic Laboratories, to upgrade these as time and money permit, and to support the Physics lectures with demonstrations. Additionally, he maintains and operates the planetarium; planning, producing, and presenting planetarium shows, that are free to the public and maintaining and upgrading the planetarium equipment. In association with this, he writes, edits, and publishes the newsletter Mountaineer Skies, and maintains the department, AAPT, and planetarium web sites. Sandra Johns, the department’s Accounting Clerk, audits accounting forms and resolves any discrepancies. She also processes procurements and payments and disseminates purchasing, receiving, and payable policies and procedures. She also reconciles procurement-card transactions for both the State and Research Corporation accounts. Doug Mathess and Tom Milam are senior Laboratory Instrument Specialists, working in an advanced, precision machine shop. The pair, under the direction of the Shop Manager, directly supports the unit’s mission to design, construct, assemble, and operate scientific instruments and apparatus used in research and instructional laboratories in the Physics Department and elsewhere on campus. Examples of specific tasks include interpreting technical drawings, precision machining using various mills and lathes, advanced welding, exercising knowledge of a wide variety of metals, maintaining and purchasing tools and materials, and controlling their inventories. They are also charged with teaching the faculty and students of the department the correct and safe use of equipment, machines and hand tools in the user shop. Greg Puskar, as an Academic Laboratory Manager, provides guidance and direction to the undergraduate instructional laboratories for general introductory physics to ensure their effectiveness in the education of the students. He also assigns and trains teaching assistants. Sherry Puskar, as an Administrative Secretary, manages day-to-day operations of the Physics Department including handling student issues, student registration, student work assignments, greeting and directing visitors, answering phones, receiving and sending mail, managing graduate students records, and alumni records. She also provides secretarial support to the Department Chair and faculty. From Left to Right: Phillip Tucker, Doug Mathess, Tom Milam, Greg Puskar, Carl Weber III, Sherry Puskar, John Hopkins, Siobhan Byrne. Phillip Tucker is a Laboratory Instrument Specialist responsible for all electronics activities in the Physics and Chemistry Departments; including repairing and maintaining electronic equipment and computer networks, sharing electronics knowledge with other personnel, managing the electronics storeroom and other electronics resources, designing and constructing electronic devices, and shipping and receiving. He is also the Chemical Hygiene Officer of the Physics Department, responsible for the development and implementation of safe work practices, safety training, compliance and hazardous waste removal supervision. Carl W. Weber III was born in Morgantown, WV and currently serves as the Lab Instrument Specialist Supervisor of the Physics Shop. His more than two-decade long career, began as an apprentice welder, first under his grandfather at the age of ten and later under Jack Johnson and Don Feathers, both then of the Physics Department. Weber currently supervises the construction of research equipment, primarily for the Physics Department, but often for other departments within the Eberly College of Arts and Sciences. He lives in Terra Alta, WV with his wife Debi Jo and their children Carl IV, Wesley, and Kristen. 7 Graduate Students Honored During the spring of 2008, two graduate students were honored for their service as teaching assistants. Olga Volotskova received the Outstanding Graduate Teaching Assistant Award and Josh Miller received the Rotter Teaching Assistant Scholarship. Olga Volotskova, born in Nurmansk Russia, a large seaport on the Arctic Circle, received her degree from the Nurmansk State Technical Institute, where she first served as a teaching assistant for Physics and English courses. After graduating, Volotskova considered continuing her education in both the United States and Norway, but elected to pursue the former because of her background in English and a desire to receive the most competitive and com- Olga Volotskova prehensive familiarity with her chosen subject. She received her Master of Science in Physics this past year at WVU, where she helped teach several introductory courses in the department. During her time as a graduate student, she was close with a number of the department’s WVU Physics Faculty faculty and staff and when questioned on the subject, speaks very highly of her first experiences outside of Russia. She is currently pursuing a Ph.D. in Engineering and Applied Sciences at George Washington University in Washington D.C., where she is performing work in Applied Plasma Physics. Her parents are Larisa Volotskova and Nikolai Volotskov. Josh Miller, born in Tecumseh, Michigan, graduated Summa Cum Laude with a BA in Physics Research at Eastern Josh Miller Michigan University, where he was the recipient of numerous prestigious fellowships, scholarships, and awards, the latter primarily granted by his professors in the Physics Department. This past year he received his Master of Science in Physics from WVU, where he was popular with faculty and students for his work teaching Introductory and Conceptual Physics. While teaching at WVU, Miller also maintained an extensive schedule of volunteer activities, including the local Kids Day event. He is now pursuing a Ph.D. with Dr. Maura McLaughlin while working in the WVU Radio Astronomy Research Group. His parents are Sandra and Robert Miller. Front row, from left: Paul Cassak, Feruz Ganikhanov, Leo Golubovic, David Lederman, Maura McLaughlin, Wathiq Abdul-Razzaq Middle row, from left: James Lewis, Alan Barnes, Marty Ferer, Boyd Edwards, Jack Littleton, Sergei Urazhdin Back row, from left: Dimitris Vassiliadis, Mark Koepke, Earl Scime, Mohindar Seehra, Art Weldon, Dunc Lorimer Missing from the Faculty photo: Nancy Giles, left, and Larry Halliburton 8 Duncan Lorimer and Team Discover Radio Burst While analyzing data from the Magellanic Clouds taken using the 64-m Parkes radio telescope in Australia, Duncan Lorimer, Maura McLaughlin and David Narkevic found an unusually powerful burst of radio waves. The origin of the mysterious source is far from clear. It appears to have been emitted from a compact source far from our Galaxy and well beyond the region of the original survey. The five-millisecond long burst was detected by virtue of its passage through ionized interstellar and intergalactic gas, causing an effect known as “dispersion” which allowed the brief but powerful indication of a 3-billion light years-distant event to appear. The dispersion phenomenon is shown in the figure below. Those readers familiar with electromagnetism will recognize the classic inverse square law dependence of pulse arrival time with frequency as a manifestation of the cold plasma dispersion relation. Based on the power of the signal, speculation currently associates it with substantial events like the evaporation of a black hole or the collision of super-dense neutron stars at cosmological distances. A firm prediction of the new discovery was that, if the source is cosmological in origin and representative of a population distributed isotropically on the sky, then other bursts should be present in archival data sets. Over the past year, Lorimer and others have been searching for more such phenomena. At WVU, David Narkevic spent the summer of 2008 searching another Parkes survey dataset, while in Swinburne Australia, Prof. Matthew Bailes and his PhD student Sarah Burke set about searching two other archival surveys made with the same telescope. While the analysis techniques are straightforward, the sheer volume of data makes this a computationally demanding task, requiring clusters of computers to process the data. Once processed, the data need to be sifted for candidate events amidst a plethora of confusing signals produced by man-made sources of radio emission. At the time of writing, no new bursts have been found in the WVU search. The Swinburne team, however, found a number of new bursts! The problem with the Swinburne discoveries is that they display an essentially identical amount of dispersion to that exhibited by the original burst! This was unexpected; if the sources are truly of astrophysical origin, the new bursts, which are seen on different positions on the sky, should show different amounts of dispersion since they would be located at different distances from Earth. An example of one of these new bursts is shown alongside the original burst in the figure. As can be seen, while the dispersive properties of the two bursts are similar, the spectral and temporal properties of the new bursts are significantly different. The Swinburne burst has a much longer duration and is significantly stronger at the higher radio frequencies. So what do these latest developments imply for the original burst? Based on the original data from the Magellanic Cloud survey, Lorimer et al were able to argue convincingly for an astrophysical origin. With the new discoveries of bursts of identical dispersion, that claim is now far from clear. Could the new bursts be terrestrial in origin and just happen to have the same dispersion as the original event? Such coincidences do happen in astronomy and science, but a skeptical and perhaps simpler view is that the original burst was simply a different manifestation of the (as yet) unknown source of terrestrial origin. The only way to distinguish between these possibilities is to exhaustively search the archival and new data. The team is understandably dejected at the new developments, but still optimistic that it can determine the origin of these bursts with ongoing research. The story is still intriguing. It provides an excellent example of the harsh realities of the highs and lows of research, and the scientific method to which we all must adhere. We aim to update the reader on the team’s progress in the next Newsletter. Left, The original burst found in 2006. Right, A new burst found in 2008. Both plots show frequency as a function of pulse arrival time on the same scale. The while lines bounding each pulse show the expected dependence from the cold-plasma dispersion law for the same dispersion sweep! Insets to each figure show the time-resolved pulse after accounting for the dispersion. The time scale on each of these plots is 500 ms. 9 Professor Littleton Retires John E. Littleton, WVU Professor of Physics, has announced his retirement from WVU following the Spring 2008 semester. During his thirty-three years of service, he has inspired thousands to look to the sky and has indefatigably promoted awareness and understanding of astronomy. In a reception held in his honor on April 22, 2008, Eberly College of Arts and Sciences Dean Mary Ellen Mazey said; “Professor Jack Littleton has made tremendous contributions to the public awareness and appreciation of the universe, notifying the public about upcoming eclipses, showing the glowing rings of Saturn to amazed school children, explaining the historical significance of Galileo’s observations of the moons of Jupiter to his students, and generally sharing his knowledge and enthusiasm for the universe with his fellow travelers on earth. He has been a tremendous asset to WVU, to the Morgantown community, to the state, and to the world. His influence will be felt for years and years to come.” Physics Department Chair Earl Scime said “I think I speak for this institution, the students, and the broader community when I say that I am glad you chose to make your career here at West Virginia University.” Bill Amatucci (PhD, 1994) praised the clarity, organization, and pacing of Littleton’s lectures, saying; “He impressed me with his clear command of the material and techniques and he presented everything with such a confident, straightforward manner that I couldn’t help but believe that I, too, could understand the material.” “Dr. Littleton is an exceptional teacher and an asset to the WVU Physics Department that will not easily be replaced.” Amatucci is now the Section Head of the Space Experiments Section in the Plasma Physics Division at the Naval Research Laboratory in Washington DC. Amatucci also appreciates the friendship extended to him; “Dr. Littleton and Dr. Treat immediately made me feel From Right to Left: Earl Scime, Becky Littleton, Jack Littleton, and Mary Ellen Mazey like I was part of the family.” Amatucci recalls socializing at Gibbie’s, trips to Washington DC, and superbowl parties at Jack and Becky’s, saying; “One of the enduring lessons that I learned from him is that Dr. Littleton the scientist and educator and Jack Littleton the friend and mentor are always woven together.” Littleton’s first master’s student, Professor Gordon McIntosh (MS, 1978), remarked that he “will always be grateful for the personal interest Dr. Littleton took in my development and progress as a physics student and as a friend.” Another student, Dr. Alison Kemp Anderson (BS, 1983), wrote to thank Jack for his dedication to teaching and that she was grateful to be “one of the recipients of your expertise and passion for physics.” Professor Littleton promoted astronomy by writing monthly astronomy columns for the Dominion Post, visiting public schools, advising the WVU Astronomy Club, speaking at star parties, constructing the Tomchin Planetarium, and showing thousands of visitors and students the wonders of sky through the telescope perched atop Hodges Hall, which arrived at WVU shortly after Littleton did. He has taught Introductory Descriptive Astronomy (ASTR 106) to over 6000 students, and has taught other courses to a few thousand more. Littleton enjoys sharing his knowledge of and enthusiasm for the universe with his students. Just ask his wife Becky, a former student of his! In his research, Littleton has contributed to the frontiers of knowledge of supernovae explosions, red giant stars, molecular spectroscopy, the solar wind, and the structure of galaxies. He anticipates continuing his research after his retirement. He was born in Ballston Spa, NY, a small town near Schenectady, where his sixth-grade science teacher, Mrs. Sauerbray, helped to spark his passion for astronomy. At age 12, his family moved to Harpers Ferry, WV. At Harpers Ferry High School (HFHS), he lettered in football, basketball, and track and field (discus), played snare drum in the band, served as president of his class all four continued on page 10 10 Department Engages Two New Professors Dr. Paul Cassak received his Ph. D. in 2006 from the University of Maryland-College Park in theoretical and computational plasma physics. He is joining the WVU Physics Department following a one-and-a-half year postdoctoral position at the University of Delaware. His work has focused on a physical phenomenon called magnetic reconnection, in which magnetic field lines release their stored energy when they break and cross-connect, not unlike the slinging out of a stretched rubber band. Reconnection is the underlying cause of solar flares, as well as substorms in the geomagnetic field and disruptive events in fusion devices. His research has helped to develop a better understanding of why reconnection begins explosively and how it occurs in the Earth’s magnetosphere. At WVU, Cassak intends to involve graduate and undergraduate students in performing massively parallel numerical simulations on large supercomputers and using theoretical tools to answer unsolved problems about magnetic reconnection with applications in solar, laboratory, and magnetospheric settings. He is excited about teaching graduate level plasma physics courses and undergraduate level electromagnetism, and is interested in public outreach. Dr. D.J. Pisano Dr. Paul Cassak Dr. D.J. Pisano comes to WVU from the National Radio Astronomy Observatory (NRAO) in Green Bank, WV where he was a postdoctoral associate supporting the Green Bank Telescope (GBT). He received his PhD from the University of Wisconsin Madison in 2001 where he searched for the gas clouds around isolated galaxies as a test of current models of galaxy formation. He extended this work to groups of galaxies, first as a postdoctoral fellow at the Australia Telescope National Facility and then at the Naval Research Laboratory and NRAO. He is continuing to study neutral hydrogen around galaxies to constrain the nature of gas clouds around the Milky Way. In addition, Pisano is currently using radio telescopes in West Virginia and around the world to observe nearby analogs to distant star-forming galaxies in order to constrain the masses and fate of these galaxies. These galaxies were common in the past, but are exceedingly rare today. They may the progenitors of galaxies like the Milky Way or its lower-mass companions. By combining radio data with data from other telescopes, Pisano is working to determine which evolutionary path these galaxies follow. Pisano is looking forward to helping to teach the new astrophysics courses that have recently been added to the curriculum and is looking forward to working with WVU undergraduates and graduate students to conduct research with the GBT and radio telescopes around the world. Professor Littleton Retires years, and served as editor of the school yearbook, Ferry Tales. He attended Cornell University, where he served as social chairman, chaplain, and president of his fraternity, Theta Chi, and received his BS in Engineering Physics in 1965. His graduate studies in theoretical astrophysics at the University of Rochester were interrupted by a tragic automobile accident in 1969 that broke his leg and claimed the lives of his mother, Anna, and wife, Joan. He received his Ph.D. from the University of Rochester in 1972 under continued from page 9 the direction of Hugh Van Horn, studying stellar transport of momentum and energy by plasma waves. Littleton worked as a postdoctoral research associate with the late Al G. W. Cameron for a year at the Belfer Graduate School of Science at Yeshiva University in New York City and for two years at the Harvard-Smithsonian Center for Astrophysics. Littleton joined the Department of Physics at West Virginia University as an Assistant Professor in 1975, where he has remained ever since except for a summer at the Univ. of Illinois, three summers and a sabbatical year at Berkeley, and a sabbatical semester at Indiana University. To honor Littleton’s dedication to astronomy education, the WVU Physics Department has established the Professor Jack Littleton Fund for Astrophysics, which will be used for the astronomy program as the department relocates to a renovated White Hall. As a testament to his impact, thousands of dollars have already been donated to this fund. 11 Consider Making a Gift to Physics Education at WVU Please contribute toward the education of a new generation of physics students. Gifts to the Physics Scholarship Fund (# 2S061) will provide graduate student stipend caps and undergraduate student scholarships. Gifts to the Tomchin Planetarium Fund (# 2V363) will provide for upgrades and operating funds for the planetarium and its newsletter. Gifts to the Physics General Fund (# 2V017) will be used where the need is greatest. Besides helping with assistantship caps, scholarships, and the planetarium, gifts to this fund will help us to renovate the undergraduate study room, to obtain equipment for new faculty and for student computer laboratories, and to establish endowed professorships. Please detach and mail this card with your gift using the enclosed business reply envelope, and take advantage of any offer by your company to match your contribution. All gifts, large and small, are greatly needed, and are deeply appreciated. Thank you! Date________________Printed Name(s) of Donor(s)_________________________________________________________________ Gift Amount_______________Fund Number (please note this number on your check) ______________________ Payment method: Personal Check (payable to WVU Foundation) Visa (see below) Mastercard (see below) Card Number_______________________________Expiration Date_____/_____Name of CardHolder___________________________ Signature______________________________________________________________________ Department of Physics Eberly College of Arts and Sciences Department Chair Earl Scime 304.293.3422 ext. 1437 escime@wvu.edu Newsletter Editor Boyd Edwards 304.293.3422 ext. 1433 bedwards@wvu.edu Alumni Relations Sherry Puskar 304.293.3422 ext. 1451 spuskar@wvu.edu Newsletter Associate Editor Dwight Pavlovic Physics News is published annually by the Department of Physics West Virginia University PO Box 6315, Hodges Hall Morgantown, WV 26506-6315 Web site: http://physics.wvu.edu/ 12 Alumni News Please share news about yourself, your occupation, and your accomplishments for inclusion in the next issue of this newsletter, by supplying the information below and by mailing this card in the enclosed post-paid envelope. Such news is valuable in demonstrating to our students that a degree in physics at West Virginia University can help to prepare a person for a wide variety of occupations, and for wonderful success in life. Such news is also valuable to other alumni who would like to know what you’re up to! Please let us know about your successes! We especially encourage you to mail this card if your current address differs from the address on our records. Address corrections may also be made online at http://www.wvu.edu/~alumni/. Please stay in touch! 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