• Act as a focal point and forum for the hard X-ray and gamma ray communities.
• Organize bi-weekly telecons to discuss recent science results, and current and future missions.
• Maintain a list of technology needs for future hard X-ray and gamma-ray missions.
• Produce suggestions to help support the specific needs of this unique community: organizational, scientific, funding.

Current Meetings

• High Energy Astrophysics Division (HEAD) 17th Divisional Meeting
  17–21 March 2019
  Monterey, California
• Agenda

Previous Meetings

• GammaSIG WP Telecon
  Friday, 8 Dec 2018, 4:00 P.M. EST
• Discussed status of WPs facilitated by GammaSIG
• GammaSIG White Paper Workshop
  Monday, 1 October 2018
  Clemson University, South Carolina
• Workshop Summary
• Organizational Telecon
  Wednesday, 1 Aug 2018, Noon Eastern
• Discussed plans for writing Decadal Survey White Papers
• Gamma-ray SIG Workshop for Decadal Survey Science White Papers
  23–24 May 2018
  at George Washington University

• Thursday, 25 Jan 2018, 2:00 P.M.–3:00 P.M. Eastern
• Two 15-min talks:
• Dr. Bruce Grossan (Berkley) will talk about The Future of Gamma-Ray Burst Science [PDF].
• Dr. Jeremy Perkins (NASA Goddard Space Flight Center) will present Burstcube [PDF].
• Open discussion
• Thursday, 14 Dec 2017, 2:00 P.M.–3:00 P.M. Eastern
• The role of the NASA Physics of the Cosmos Program Analysis Group (PhysPAG) and the Gamma-ray Science Interest Group (GammaSIG).


• Steering Committee members needed for the new Multi-Messenger Astrophysics Science Analysis Group (MMA-SAG)


• Two 15-min talks on HAWC/Fermi science:
• Dr. Petra Huentemeyer (Michigan Technological University) will talk about HAWC results and the importance of lower energy gamma-rays to support HAWC science.


• Dr. Giacomo Vianello (Stanford University) will present the current joint analysis efforts and the synergies between HAWC and Fermi [PDF].
• Open discussion


• Thursday, 16 Nov 2017, 1:00 P.M.–2:00 P.M. Eastern
  Two talks on Gravitational Wave/Gamma Ray Burst observations and discussion (20 minutes each and remainder discussion):
• Black and Gold: The Astrophysics of the Compact Binary Merger GW170817/GRB170817A. Dr. Leo Singer (NASA Goddard Space Flight Center) [PDF]
• The Fermi Gamma-ray Burst Monitor Aspects of GW/GRB Detections, and the vision for the future to support this research field. Dr. Colleen Wilson-Hodge (NASA Marshall Space Flight Center and PI of the Fermi Gamma-ray Burst Monitor) [PDF]

• Upcoming Meetings
• PhysPAG Meetings



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• Past Meetings
• At 231st Meeting of the American Astronomical Society, 8–12 January 2018, Washington, D.C. [All activities at Gaylord Hotel/Conference Center Full Agenda]
• Monday, 8 January 2018
• Gamma Ray SIG Meeting [Agenda]
  11:00 A.M.–12:30 P.M., Room : Maryland Ballroom 3


• PhysPAG Meeting [Agenda]
  3:30 P.M.–5:00 P.M., Room: Maryland Ballroom 4–6
• HEAD Fifteenth Divisional Meeting, Naples, Florida, April 3–7, 2016, Special Session on X-ray and Gamma-ray Polarimetry
  (https://head.aas.org/head16/special_sessions#polarimetry) and GammaSIG session.
• At 227th AAS Meeting, January 4–8, 2016, Kissimmee, FL [Agenda]
• Sixth International Fermi Symposium, November 9–13, 2015, Arlington, VA [Agenda]
• GammaSIG session at the special HEAD High Energy Decadal Meeting, Chicago, IL, June 29, 2015 which focused on the development of the science case for the gamma-ray roadmap.
• Presentations
• GammaSIG meeting at APS Meeting, Baltimore, MD, April 13, 2015
  Session U14 Mini-symposium on Future MeV Gamma-Ray Science and Missions
1. Scientific Optimization for Proposed MeV Gamma-Ray Instruments, Lessons Learned From the Fermi-LAT: Eric Charles [PDF]
2. Advanced Energetic Pair Telescope for Medium-Energy Gamma-Ray Polarimetry: Stanley Hunter [PDF]
3. The Future of High Energy Polarimetry: Mark McConnell [PDF]
4. Science from the MeV Gamma Ray Sky: Reshmi Mukherjee [PDF]
• Workshop on Future Space-based Gamma-ray Observatories Goddard Space Flight Center, February 5-6, 2015.
• GammaSIG Meeting, at AAS on Sunday, January 4, 2015 [Agenda]