1. Future Gamma-Ray Observatories APS White Paper Meeting Thurs. 8 Feb 2007 in McGaw Hall 1:30-5:00 Bring a 1-viewgraph idea to share or just come and listen. Everyone is welcome and encouraged to participate now or in the future. Organizing Committee: Brenda Dingus, Henric Krawczynski, Martin Pohl, Vladimir Vassiliev Additional Members of Editorial Board: Francis Halzen, Werner Hofmann, Steve Ritz, Trevor Weekes 8 Feb 2007 AGENDA: 1:30-1:45 Motivation & Organization 1:45-2:10 Extragalactic Working Group 2:10-2:35 Gamma Ray Burst Working Group 2:35-3:00 Dark Matter Working Group 3:00-3:15 Break 3:15-3:40 Galactic Compact Sources Working Group 3:40-4:05 Galactic Diffuse Working Group 4:05-4:30 Technology Working Group 4:30-5:00 General Discussion

2. APS Charge “The Division of Astrophysics of the American Physical Society invites you to prepare a review or white paper on the status and future of ground based TeV gamma-ray astronomy. With the upcoming commissioning of VERITAS and the success of HESS and other is this emerging field, a review of the science accomplishments and potential would be welcome. Furthermore, given the long lead time for designing, developing and deploying new instruments, we need a clear path for proceeding beyond the near term.”

3. White Paper Organization Working Groups –Based on Scientific Topics –Engage largest possible community –Gather scientific goals for future observations –Produce written document Editorial Committee –Synthesizes working group reports to shorter summary document Make connections with other related fields and international community

4. Working Groups Extragalactic Sources (Henric Krawczynski) Gamma Ray Bursts (David Williams, Abe Falcone) Dark Matter (Jim Buckley) Compact Galactic Sources (Phil Kaaret) Diffuse Galactic Sources (Martin Pohl) Technology (Karen Byrum)

5. Editorial Committee Organizers Brenda Dingus, Henric Krawczynski, Martin Pohl, Vladimir Vassiliev Advisors Francis Halzen, Werner Hofmann, Steve Ritz, Trevor Weekes

6. Timeline Complete summary document and working group documents for presentation at April 2008 APS meeting “Near final” documents of working groups needed by end of summer 2008 Drafts and details are on web page http://cherenkov.physics.iastate.edu/wp/ http://cherenkov.physics.iastate.edu/wp/ Still plenty of time for more contributions

7. White Paper Meetings “Town Hall” Meeting at GLAST Symposium –8 Feb. 2007 APS April 2007 Session with reports from each Working Group –14-17 April 2007 Workshop in Chicago –13-14 May 2007 –Contact Karen Byrum or Simon Swordy –http://www.hep.anl.gov:80/byrum/next-iact/index.htmlhttp://www.hep.anl.gov:80/byrum/next-iact/index.html

8. Future Gamma-Ray Observatories APS White Paper Meeting Thurs. 8 Feb 2007 in McGaw Hall 1:30-5:00 Bring a 1-viewgraph idea to share or just come and listen. Everyone is welcome and encouraged to participate now or in the future. Organizing Committee: Brenda Dingus, Henric Krawczynski, Martin Pohl, Vladimir Vassiliev Additional Members of Editorial Board: Francis Halzen, Werner Hofmann, Steve Ritz, Trevor Weekes 8 Feb 2007 AGENDA: 1:30-1:45 Motivation & Organization 1:45-2:10 Extragalactic Working Group 2:10-2:35 Gamma Ray Burst Working Group 2:35-3:00 Dark Matter Working Group 3:00-3:15 Break 3:15-3:40 Galactic Compact Sources Working Group 3:40-4:05 Galactic Diffuse Working Group 4:05-4:30 Technology Working Group 4:30-5:00 General Discussion