Physics of the Cosmos
Exploring fundamental questions regarding the physical forces of the universe

Gamma Ray Science Interest Group
(GR SIG)

Gamma Ray SIG Chairs

Name Institution Term
Manel Errando Washington U. St. Louis Feb 2023 – Dec 2025
Jeremy Perkins NASA / GSFC Jan 2024 – Dec 2026
Cori Fletcher NASA / MSFC
Sylvain Guiriec GWU

Former Gamma Ray SIG Chairs

Former chairs of the Gamma Ray Science Interest Group (GW SIG) who served on the PhysPAG Executive Committee from 2011 through 2022.

Name Institution SIG / SAG Term
Eric Burns Louisiana State University GR SIG 2021 – 2023
Bindu Rani American University GR SIG 2019 – 2022
Marcos Santander Univ. of Alabama CR SIG / GR SIG 2018 – 2021
Sylvain Guiriec George Washington Univ. GR SIG 2016 – 2020
John Tomsick UC Berkeley GR SIG / XR SIG 2016 – 2019
Henric Krawczynski Washington Univ. in St. Louis GR SIG 2015 – 2018
Mark McConnell Univ. of New Hampshire GR SIG 2014 – 2016
Liz Hays GSFC GR SIG 2011 – 2014
Steve Ritz Univ. of California,
Santa Cruz
GR SAG 2011 – 2013
News
22 September 2025
Final Reminder: PhysCOS Second Early Career Workshop on 23-25 September 2025
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Astronomy and Astrophysics Advisory Committee Meeting on 26 September 2025
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4th TDAMM Workshop Registration Deadline Extended to 27 September 2025
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Call for 2026A Proposals for NASA Infrared Telescope Facility; Deadline 1 October 2025
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JWST Call for Proposals for Cycle 5; Deadline 15 October 2025
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