1 Topical Group on Gravitation TM Definition: A name preceded by an asterisk (*) denotes that individual as a Fellow; a double dagger (‡) means that a person is a lifetime member. All other names are regular members. A Abrams, Drew Robert AbuTaha, Ali F Adair, Aaron M Adams, Laura *Adelberger, Eric G Adhikari, Rana *Adkins, Gregory S Afshar, Marcus M *Ahn, Doyeol Aisenberg, Sol Akimoto, Hidemi al-Binni, Usama A *Albrecht, Andreas Johann Ali, Tibra *Allen, Bruce Allen, Clinton William Allen, Gabrielle D Alsup, James E Altunkaynak, Ismet B ‡*Alvarez, Orlando Amin, Rupal S Amoroso, Paul A Andersen, William Anderson, Matthew W *Anderson, Oscar A Anderson, Paul R Anderson, Warren G Apratim, Manjul Aravind, Aditya Arif, Mohd Armstrong, Jason E *Arnowitt, Richard L Artiles, Oswaldo Jose Ashby, Neil ‡*Ashtekar, Abhay Vasant Aso, Yoichi Auerbach, Leonard B August, Andrew J Aurilia, Antonio Avalos Vargas, Adriana Avramidi, Ivan G B Babiuc, Maria C Bai, Hua Bailey, Quentin G Baker, John G Baker, William M Balduz, Jose L Ballmer, Stefan W Bang, Jang Young Bantilan, Hans Barbero G, J Fernando *Bardeen, James M *Barish, Barry C Barrabes, Claude ‡*Bartlett, David F Bartolomeo, Daniel M Barton, Mark A Bartos, Imre Bartos, Imre Bassette, Steven L Bates, Jason Bates, Robyn Rebecca Battat, James Baumgarte, Thomas W Bautz, Laura P Beausoleil, Raymond G ‡Beckwith, Andrew Walcott Beecher, Stephen C Bell, Alexander S Benacquista, Matthew John *Bender, Peter L Benedict, Alex G Berenji, Bijan Berg, Eric C *Berger, Beverly Kobre Bergman, David Robert ‡*Berley, David Berndtson, Mark Vincent Bernstein, Mark R Berti, Emanuele Bertoni, Bridget A *Bertschinger, Edmund Berukoff, Steven Bessis, Daniel J Betzwieser, Joseph C Beyersdorf, Peter Bicak, Jiri Biesiadzinski, Tomasz P Bin-Nun, Amitai Biswas, Rahul Black, Don V Black, Eric D Blackburn, James K Blackburn, Lindy Blair, David G Blodgett, Douglas A Blood-Forsythe, Martin A Bloomfield, Jolyon K Bluhm, Robert T Bochner, Brett Bode, Aksel Bode, Tanja Bogatin, Eric L Bogdanoff, Igor Boggs, William D Bojowald, Martin Bolen, Brett Day Bombelli, Luca Bona, Carles Bondarescu, Ruxandra Bonning, Erin W Booker, Marjorie R Booth, Ivan Bose, Sukanta Bourjaily, Jacob Lewis Boz, Tamer Suleyman Bozorgnia, Nassim Brad, Jimmie Brady, Patrick R *Brandenberger, Robert H Brandt, Howard Edward Brasfield, Rebecca L Brasoveanu, Theodor D *Brau, James E Breninford, Michael P *Brill, Dieter R Brink, Jeandrew Brissette, Richard J Britton, Richard Brotherton-Ratcliffe, David C Brown, Duncan A. Brown, J David Brown, Jesse Brown, Natalie Brownstein, Joel R Brueckner, Thomas John Brugger, Spencer C Buchheit, Joshua J Buchman, Luisa T Buchman, Saps Bui, Hai V Bullock, David Buonanno, Alessandra Burdett, William C Burell, Zachary Michael Burke, Jason T Burke, Thomas ‡Burko, Lior M Butcher, Eric R Buyukcam, Umut *Byer, Robert L C Cabrera, Yaniel Cadonati, Laura *Caldwell, Robert R Calpas, Betty Camarda, Karen D Camblong, Horacio Etienne Camp, Jordan Camp, Paul J. *Campanelli, Manuela Campbell, Gerald A Campuzano, Mauricio Cannon, Kipp C Cantrell, Sean A Cantu, Sergio H Canty, Timothy M Capano, Collin D Cardarelli, Corrado Carey, W T *Carlip, Steven J Carr, Avery T. Carrasco, John Joseph Murphy Carroll, Sean M Carruthers, Thomas F Carter, Corey R Carter, Thomas Gordon Cartin, Daniel B Cattell, David Frank Caudill, Sarah E Cavaglia, Marco ‡Caviness, Kenneth Edwin *Centrella, Joan *Cerdonio, Massimo Chalfant, Matthew T Chang, Hui-Yiing Chavez, Angel Chawla, Sarvnipun S ‡Checkai, Ronald Alexander Chen, Chien-Yi Chen, Shih-Hung ‡*Cheng, Hai-Ping Cho, Hyun Jai *Choptuik, Matthew William Cisneros, Sophia N Clark, Alan D Clausen, Adam Donald Cohen, Michael I Coleman, Joseph E Collopy, Samuel Comer, Gregory Lee Congdon, Arthur Conlon, Thomas F Cook, Gregory B Cook, Patrick W Cook, Ted S Cooke, Simon James Cooley, Donald W Cooney, Alan J Cooper, Patrick J Cooperman, Joshua Harris Corbitt, Thomas R ‡Cordwell, William Robert ‡Corey, Brian E Corne, Matt Cornish, Neil John Correll, Randall R. Cottrell, Kazuo O Coyne, Dennis Coyne, Robert R Craig, David A Cramer, Claire E Crawford, James Patrick Creighton, Jolien D Crispino, Luis Carlos Bassalo Criss, Adrienne E Croley, Richard A Cross, William D Crudo, Richard Anthony Cuddihee, Judy G Cui, Yanou Cunliff, Colin I Curtin, David Richard Cutler, Curt J D Da Silva, Argenis ‡Dale, Charles *Danzmann, Karsten V Darkhosh, Teymour Das, Rajarshi Davis, Clayton Davis, Don W Daw, Edward J De Ball, Leonard M de Clark, Sybil G de Sousa Santos, Frederico de Strulle, Ronald DeBenedictis, Andrew ‡Degen Comte, Federico A DeGraf, Colin ‡*Dehmer, Joseph L DeLillo, Thomas K. Delmer, Thomas N Deloach, John G Demens, Tammy G Demergis, Vassili Demidio, Jonathan Demmie, Paul N Denagy, Matthew R Deng, Xihao Dennis, Phillip W Dergachev, Vladimir *Dermer, Charles D Desai, Shantanu A 2 Topical Group on Gravitation TM Definition: A name preceded by an asterisk (*) denotes that individual as a Fellow; a double dagger (‡) means that a person is a lifetime member. All other names are regular members. Desalvo, Riccardo DeSanto, Spencer C *Deser, Stanley Detweiler, Steven L Diaz, Mario Claudio Diener, Peter Dietz, Alexander Dingee, Brian C Dinsmore, Jonathan H Dirk, Eugene H Dolan, Richard P Donnelly, William D *Donoghue, John Francis Dooley, Katherine L Dooling, Thomas Ashley Dossett, Jason N Dow, Keith Drake, Adam Drasco, Steven C Dray, Tevian Drell, Brian R *Drever, Ronald Driscoll, Joseph Andrew Dube, Maurice P Duez, Matt D Duff, Bob M Duffle, Willy L Dupre, Katherine M Duston, Christopher L Duszynski, Joseph S. Dwyer, Sheila E East, William E Easther, Richard Eckert, Kathleen D Edery, Ariel Eiben, Aaron G P Eling, Christopher Thomas Elliott, Steven E Endlich, Solomon G Engel, Pedro F Engelhardt, Netta Esculpi, Maria A Estabrook, Frank B Etienne, Zach B Eufrasio, Rafael T Evans, Matthew J Evans, Robert D. *Everitt, C.W. Francis Exarhos, Stephen A F Faber, Joshua Aaron *Faller, James E Farr, Benjamin Farr, Will Meierjurgen Farris, Brian D Fazi, Diego Febres Cordero, Fernando Miguel Felber, Franklin S Fell, Barry Ferrante, Daniel D Finch, Tehani Finkel, Cyndee Finley, James D *Finn, Lee Samuel *Fischbach, Ephraim Fischetti, Sebastian *Flanagan, Eanna Eamonn Fletcher, Samuel C Flurchick, Kenneth M Flynn, Sarah R ‡Folacci, Antoine F ‡Foong, See Kit ‡*Ford, Lawrence ‡Ford, Victoria Potter Fortin, Christopher S Fotopoulos, Nickolas V Foucart, Francois V Fraisse, Aurelien A ‡Fraley, Gary S Frederickson, Paul O. Freese, Katherine Frey, Raymond *Friedman, John L *Fritschel, Peter K Frittelli, Simonetta Frolov, Valery Fuller, Cory ‡Fulling, Stephen A Fung, Andrew K Futterman, John A Hardt G Gal, Ciprian Galati, William Galehouse, Daniel C Galley, Chad *Gambini, Rodolfo Gamble, Jr, Ronald S ‡Ganezer, Kenneth Samuel Gao, Caixia Gao, Yang Gardner, Mark A ‡*Garfinkle, David Garofoli, Justin Garrison, David Gates, Richard E Gaul, Marcus Geraci, Andrew Albert Gerlach, Ulrich H Gettemy, Matthew V Giacomazzo, Bruno *Giaime, Joseph A Gilbert, Raymond S *Gillies, George Thomas Gilmore, James Givens, Kevin M Glaspie, John P Glass, Edward N *Gleiser, Reinaldo J Goel, Rakesh Goers, Andrew J Goetz, Evan ‡Goldberg, J N Goldson, Sharma Golowacz, Edward C Gomberoff, Andres Gomide, Fernando de Mello *Gonzalez, Gabriela Goodman, Jessica L Gorenstein, Marc V Gouaty, Romain Goupil, Patrick W Gowdy, Robert H ‡Graber, James Stanley Grabowski, Paul Eric Gralla, Samuel Elliot Granda, Luis N Green, Stephen R Greenberg, Philip Joel Greenspan, Lauren Greenwald, Jared William Gromov, Andrey Gross, Jeff Grosvenor, Kevin T Gudmundssoon, Jon E *Gundlach, Jens H Gupt, Brajesh K Gurganus, Heath A Gurley, John A Gustafson, Eric Keith Gustafson, Richard Gutierrez, Benjamin Gutierrez, Dan D Gutierrez, Raul E Gutman, Eric N H Haas, Roland Habib, Salman Hagedorn, Charles Alex- ander Haggard, Hal M Haghighipour, Nader *Hall, Dennis G Hallidy, William H *Hamilton, William O Hammond, Richard T Hancock, Charles C Hanna, Chad R Hansen, Earl Gustav Hansen, Todd Hardenbrook, Joshua R Harke, Richard E Harms, Jan Harrison, B K Harrison, Connor Harry, Gregory M Harte, Abraham ‡*Hartle, James B *Harvey, Alex Harvey, Alex Haugan, Mark Paul He, Lianxin Healy, James *Heckel, Blayne R Hegedus, Kayla Marie Hehl, Friedrich W Helfer, Adam D ‡Helfont, Jeffrey Arnold Helou, Michel Hepfer, Jacob M Herman, Rhett Byron Hernandez, Roberto A Herynk, John M *Hewitt, Jacqueline N Higham, Jeffrey Hill, Andrew L Hill, Galen L Hill, Jeffrey Hinderer, Tanja P Hines, Joy M Hirose, Eiichi Hoak, Daniel Hobill, David Wesley Hoff, Ramon *Hogan, Craig J Holz, Daniel Hooker, Joshua ‡Hornstein, J S *Horowitz, Gary Horvat, Christopher Hosken, Robert William *Hough, James Howard, Ecaterina M Hoyle, Jr, Charles D Hromnik, Tristan ‡*Hu, Bei-Lok Huang, Cheng-Wei HUANG, YONGQING Hubert, Scott A Hudson, Jonathan ‡Huff, Robert W Huffenberger, Kevin M Hughes, John A Hughes, Scott A Hughey, Brennan J Hunter, Daniel R Husain, Viqar Hutchinson, Maxwell I Ibrahim, Khadeejah Aisha Ichise, Hiroshi Idrisy, Ashikuzzaman Inabnit, Carrie A Ipekoglu, Yusuf *Isenberg, James A Ishak-Boushaki, Mustapha Ison, Christopher C Ivancic, Timothy J Iyer, Savitri V J Jack, Douglas S Jackson, Kaylyn G Jackson, Steven R *Jacobson, Theodore Alan Jain, Dharmesh Jani, Karan P *Janis, Allen I Jantzen, Robert T Jenet, Fredrick A Jessen, James M Jin, Ke-Jian Johannsen, Tim Johnson, Coates R Johnson, Robert A Johnson, Warren W Johnson-McDaniel, Nathan K Jones, Christopher L Jones, Robert C. Jones-Smith, Katherine A Jurgenson, Eric D K Kalmus, Peter Michael ‡*Kalogera, Vassiliki Kaloper, Nemanja *Kamionkowski, Marc P Kanner, Jonah B 3 Topical Group on Gravitation TM Definition: A name preceded by an asterisk (*) denotes that individual as a Fellow; a double dagger (‡) means that a person is a lifetime member. All other names are regular members. Kaplan, Jeffrey D Kastor, David Kathrein, Scott Katsavounidis, Erotokritos KAWABE, Keita Kean, William D. Keidl, Tobias S Keiser, George M Keitel, David Kelleher, Adam S Keller, Dustin M Kelly, Bernard J *Kennefick, Daniel Keppel, Drew G Khan, Rubab M Khanna, Gaurav Kharel, Rehal Kiguchi, Masayoshi Kim, Chunglee Kim, Dong Y Kim, Sang Pyo Kimball, Derek F Kissel, Jeffrey S Klarfeld, J Klimenko, Sergey G Kling, Thomas P Knapen, Simon Knoedler, Christina Marie Knutson, John W. Kobach, Andrew C Koeplinger, Jens *Kolb, Edward W ‡Koldewyn, William A Kommu, Rajesh K Konkowski, Deborah A Konopka, Sebastian Kopparapu, Ravi Kumar Korobkin, Oleg Kosko, Matthew *Kostelecky, V Alan Kostov, Veselin Krause, Dennis Edward Krause, Todd B *Krisch, Jean P Kriske, Richard M Kronmiller, David L ‡Krotkov, Robert Krylova, Kristina Kumph, Muir Kunz, Jeremy Kuter-Arnebeck, Ottoleo Kwong, Jonas Hiu Fai L Lacey, Ian *Laguna, Pablo Lai, Wai Kin *Lamb, Frederick K Lamb, Murray A Landry, Michael R Lang, Ryan N. Langellier, Nicholas R Lantz, Brian T Lara, Juan F Larson, Michelle Beauvais Larson, Shane L Lass, Oliver Peter Eric Laubenstein, John R Lauburg, Vanessa Lawrence, Albion E *Lazzarini, Albert John Le Tiec, Alexandre Lee, Jason ‡Lehner, Luis R Lemmon, William W Lenk, Ron Lentz, Erik W Leon, Edgar A Leonor, Isabel Levitan, David B Lewis, Darryl E Lewis, Melvin A Libbrecht, Kenneth G Liberman, Zvie Licht, A Lewis ‡Liebling, Steven L Lin, Chun-Yen *Lindblom, Lee A Lindsay, David S Liou, Horng-ing Little, Scott Liu, Gordon Liu, Xiaolong Liu, Yuk Tung Livas, Jeffrey Clark Loftus, Gregory W Logan, George D Lombardi, Alexander L Lommen, Andrea Long, Gen Long, Joshua C Long, Paul Robert Loos, Alyssa D Lopes de Sa, Rafael C Lorscher, Christopher Louis, Michael Lousto, Carlos O Lovelace, Geoffrey Lowe, Gary K ‡Luce, Robert J Lund, Amanda L Lundsten, Michael J M Ma, Zhibo Madsen, Jes Mahmoud, Iyad Mahnich, Jacques Major, Seth A Malinaric, Paul Joseph Mallory, Kendall Eugene Maltz, Jonathan D Mandel, Ilya Mandic, Vuk Mandzy, John Manning, Brett Manning, Logan *Manogue, Corinne Alison Manukian, Haik D Marka, Szabolcs Markakis, Charalampos Marklund, Mattias ‡*Marolf, Donald M Marronetti, Pedro Marshall, Derek Jay Marshall, Gardner R Martin, Eric Martin, Rodica M ‡*Marx, Jay N Masai, Kuniaki Mason, Kenneth R ‡*Mathews, Grant James *Matzner, Richard A Mavalvala, Nergis Mayer, Alexander Franklin McAdams, Robert W McAllister, Andrew E McCarthy, Bradley P McCleary, Jacqueline E McClelland, David E McCully, Curtis V *McGuire, Stephen Craig McHugh, Martin P McIver, Jessica ‡McKinney, Jonathan C McMahon, Jeffrey M *McManus, Hugh McNicoll, Yvon G McQuade, J. Michael McQueen, Stanley E. McWilliams, Sean T Mead, John E Mead, Victoria K Megevand, Miguel F Meier, Eric Todd Meitzner, Seth *Melissinos, Adrian C Mendell, Gregory Allen Mercer, Robert A Merkowitz, Stephen ‡*Meshkov, Sydney Messina, Joseph F Miasnikov, Stanislav O Middleton, Chad Aaron Mike, John C. Miksch, Edmond Stewart *Miller, Donald H Miller, John Miller, Lucas D Miller, Michael Coleman Miller, Paul Miller, Robert L Miller, Terry Miller, Warner A. Mines, Jonathan K Minter, Stephen J Mirshekari, Saeed Miskowiec, Andrew ‡*Misner, Charles W *Mitselmakher, Guenakh Mittleman, Richard Miyoshi, Shigeru J Mohamed, Kasem M Mohanty, Soumya D Molk, Adriel L Moore, Charles L Moore, Jacob Moore, Steven A Morris, John R Morrison, Ian A Morrison, Michael C Morsink, Sharon M Morton, Tom P Morton-Park, Frank W Mossessian, George D Mott, Alexander R Motta, Fred Mroue, Abdul Hussein K Mueller, Guido Mukherjee, Soma Murgan, Rajan Myers, Eric A Myers, Mark A N Nadkarni, Sharvari Mahendra Nakano, Ryosei *Nash, E Thomas Nasser, Julius Alfred Navarro, Luis G Nelson, Elliot L Nesterov, Alexander IIyich Newell, David B *Newman, Ezra T *Newman, Riley D Ng, Him Wai Nichols, David A Noble, Scott C *Noerdlinger, Peter D Novo-Gradac, Anne-Marie O O’Brien, James G O’Connor, Evan P O’Dunn, Emmett Seaumus O’Malley, Garrett Monroe O’Neal, Presence M O’Reilly, Brian O’Shaughnessy, Richard W Obaid, Razib *Obregon, Octavio Ochsner, Evan Ogin, Gregory ‡Olwell, Kevin D Oral, Secil Ostermann, Peter Ott, Christian D Ottens, Richard S ‡Owen, Benjamin J Owen, Jane R Owen, Robert P Ozer, Murat P *Paik, Ho Jung Palestini, Nicolas Pan, Yi Pankow, Chris Papkalla, Robert Kurt Parameswaran, Ajith Parashar, Prachi ‡*Parker, Leonard E Parsons, Roger K Patla, Bijunath Ravindran Patrick, Kristen E Pazos, Enrique Pedicini, Anthony F Pekowsky, Larne P Pendo, Luke M Penn, Steven D Pequette, Naomi E Perez Hoyos, Ethel A Perrodin, Delphine L Pesic, Peter 4 Topical Group on Gravitation TM Definition: A name preceded by an asterisk (*) denotes that individual as a Fellow; a double dagger (‡) means that a person is a lifetime member. All other names are regular members. Petersen, John E Pfeiffer, Harald P Pfenning, Michael J ‡Phillips, Thomas J *Phinney, E S Pichelmeyer, Jake R Pierce, Fred ‡Pietenpol, Jerry L Pilla, Michael R Piso, Ana-Maria A Pitkin, Matthew D *Poisson, Eric Pollack, Scott E Poltorak, Alexander I Ponce, Marcelo Popell, George C Poplawski, Nikodem J Potamianos, Karolos J Pressler, David E Presuto, Christopher M Pretorius, Frans Price, Larry R. *Price, Richard H *Prince, Thomas Allen Pruteanu, Dan I ‡*Pullin, Jorge Purdue, Patricia *Riles, John K *Rindler, Wolfgang *Ritter, Rogers C Roark, Oscar W *Robertson, Norna A Robins, Edward S *Robinson, Ivor Rodgers, Vincent Gerald Rodina, Laurentiu Rodman, Travis Rodriguez, Carl L Roman, Thomas A Romano, Joseph David Romano, Pedro Romero, John M Roodman, Aaron Rosen, Benson J Rosenthal, Eran Rowan, Sheila Roy, Arunava ROY BARDHAN, BHASKAR Royster, Michael S ‡Rudmin, Joseph D *Ruffini, J Remo Russakoff, Arthur G Russell, Neil Eric Q S Qiblawi, Hilal H Quetschke, Volker M R *Raab, Frederick J Rahvar, Sohrab Ramadhan, Handhika S Ramazanoglu, Fethi M *Rasio, Frederic A Rasor, Ned S Rauber, Joel D ‡Rauch, Richard T Ray, Heather L Read, Jocelyn Samantha Reasenberg, Robert Redmount, Ian H Reed Jr, David R Reid, David Darryl *Reitze, David Howard Reprogle, Briana M Reula, Oscar A Reynaud, Serge Reynolds, Bruce A Richman, Samuel J Ricketts, Paul G Ridley, Joshua Sabancilar, Eray Sabharwal, Subir Sadeghian, Laleh Saelim, Michael J *Safko, John L Sagi, George S Sandberg, Vernon Dean *Sanders, Gary H Sanderson, Robyn E Sandoval, Jose Lawrence Sannibale, Virginio Saroff, David Sasagawa, Fumiyoshi SATO, NOBUO A *Saulson, Peter R ‡Saunders, Kenneth V Savage, Richard L Scheel, Mark A Schiffrin, Joshua Schladensky, Paul R. Schlamminger, Stephan Schmid, Christoph H Schmitthenner, Jared A Schneider, Andrew J Schnetter, Erik *Schutz, Bernard F Schwab, Josiah W Schwanz, Chad M Schwinberg, Paul B Scott, Kimberly C.B. Searle, Antony C ‡*Seidel, Ed Seifert, Michael ‡Seitz, Herbert Selesnick, Stephen A Sergijenko, Olga Shaddock, Daniel A Shah, Abhay G Shahir, Bijan Y *Shapiro, Stuart Louis Sharp, Nigel Shaw, James Shaw, Matthew R Shawhan, Peter Sven *Shelton, Frank H Shepley, Lawrence Charles Shi, Xinghua Shirley, Evan T. *Shoemaker, David Hopkins ‡Shoemaker, Deirdre M Shojaei Mahib, Hamidreza Shultz, Kay Rhoda Siemens, Xavier Sigg, Daniel Silbar, Eliot K Simingalam, Sina Simon, Jonathan Z Singer, Leo P Singer, Scott Benjamin Siopsis, George Skibo, Richard Slepko, Alexander Slutsky, Jacob Smith, David E Smith, Eric S Smith, Joshua R Smith, Kenneth L Smith, Madeline K Smith, Nicolas D Smith, Scott C Smoot, Dennis G Snead, David E Snyder, Lucas Arthur ‡Soli, George A Solomovich, Stanislav Solway, Michael Somiya, Kentaro Sopuerta, Carlos Fernandez *Sorkin, Rafael Dolnick Sperhake, Ulrich Srinivasan, Keshav Stallard, David V Stankowicz, James M Stapleton, David J Stark, Jeremy W Starobinsky, Alexei A Stebbins, Robin T Stein, Leo C Stephens, Branson C Stochino, Alberto Stone, Robert J ‡*Stubbs, Christopher W Stuckey, William Mark Stuver, Amber L Suen, Wai-Mo Summerscales, Tiffany Zoe Sumner, Larry D Sun, Ke-Xun Surowitz, Eugene Joseph Swanson, Maren E Swanson, Molly Ellen Crosby ‡Szabo, B G T Takeuchi, Kenichiro Tangen, Kjell *Tanner, David Burnham Tasson, Jay D. *Taylor, Barry N Taylor, Brett Eric Taylor, Steve M *Teukolsky, Saul A Thane, John Mark Thompson, Robert Thomas ‡Thornber, Nora S Thorne, Keith A *Thorne, Kip S Thorpe, James Ira Thrane, Eric Tinto, Massimo ‡Tipler, Frank J Tonita, Aaryn Toros, Marko Torrente Lujan, Emilio Torres, Cristina Valeria *Traschen, Jennie ‡*Trimble, Virginia Trinkala, Michael J Tripathi, Swapnil Trnka, Jaroslav Trodden, Mark Trott, David W Truax, Micah S Tsatsin, Petr Tuckerman, Cameron J ‡Turman, Daniel C *Turneaure, John P Turner, Matthew D *Turner, Michael S U ‡Ueda, Yoshifumi Ugolini, Dennis W Ultee, Elizabeth *Unruh, William G Unver, Mehmet Tuncer Uryu, Koji V Vallisneri, Michele Varney, Michael C.M. Vazquez, Billy Vazquez Baez, Victor Manuel Veerahanumak, Satheeshkumar Venturi, Giovanni A Vera-Hernandez, Julio Vigeland, Sarah J *Vilenkin, Alexander Visinelli, Luca *Visser, Matt W Wagner, Todd Alan Wagoner, Kasey R *Wagoner, Robert V *Wald, Robert M Waldman, Sam Walker, Sara I. Walker-Wright, Alice Wall, Aron C Wall, Joshua Wallace, Colin S Wallace, William *Walsworth, Ronald L Walter, Paul Joseph Walton, Ronald Albert Waltz, Shawn T Wan, Mew-Bing Wang, Qian Wang, Ting Wang, Yan Ward, Robert L Ward, Ward F Weaver, Benjamin Weaver, Gwen M Webb, Bill 5 Topical Group on Gravitation TM Definition: A name preceded by an asterisk (*) denotes that individual as a Fellow; a double dagger (‡) means that a person is a lifetime member. All other names are regular members. Weid, Bridget ‡Weinstein, Alan Jay Weinstein, Bryan T Weisberg, Joel M *Weiss, Rainer Weitkamp, Galen Leigh West, Brent F *Westervelt, Peter J Whelan, John T *Whitcomb, Stanley E Whiten, Blake A Whiting, Bernard F Wiesner, Matthew P ‡*Will, Clifford M Willems, Phil A Williams, Rebecca M Willis, Joshua L Wilson, Gabriel R Wilson, Michael J ‡Wilson, Thomas L *Witten, Louis Wolfmeyer, Randy W Wood, W Robert Woodard, Richard P Worden, Paul Wellman Worthen, Deuard Von Woten, Jacob T Wright, Gregory Alan Wysk, Joseph D Y Yagci, Kamile Yakunin, Konstantin N Yamamoto, Hiroaki Yarritu, Aaron K Yoha, Kaitlyn M Yoshida, Sanichiro Yu, Yinan Yunes, Nicolas Z Zack, Dennis M Zagho, Mahamed Mahamed Zahedy, Fakhri S Zamorano, Nelson Zawyrucha, Daniel Evan Zhai, Jun Zhang, Yuan Zhao, Xinghai Zhou, Yaofu Zimmerman, Peter J Zink, Burkhard Zink, J W Zitzer, Benjamin J Zlochower, Yosef *Zucker, Michael E Zukin, Phillip G