1 / 35

New High Energy Telescopes

New High Energy Telescopes. Geoff Bower. EGRET. Instrument on CGRO NASA Great Observatory 20 MeV – 30 GeV 1500 cm^2 5 arcmin for strong sources. EGRET. 271 sources 66 blazars 5 pulsars 170 unidentified. Hartman et al 1999. EGRET Blazars. Mattox et al 1997. Compact & Flat Spectrum.

tala
Download Presentation

New High Energy Telescopes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. New High Energy Telescopes Geoff Bower The Transient Universe: AY 250 Spring 2007

  2. EGRET • Instrument on CGRO • NASA Great Observatory • 20 MeV – 30 GeV • 1500 cm^2 • 5 arcmin for strong sources The Transient Universe: AY 250 Spring 2007

  3. EGRET The Transient Universe: AY 250 Spring 2007

  4. 271 sources 66 blazars 5 pulsars 170 unidentified Hartman et al 1999 The Transient Universe: AY 250 Spring 2007

  5. EGRET Blazars Mattox et al 1997 The Transient Universe: AY 250 Spring 2007

  6. Compact & Flat Spectrum The Transient Universe: AY 250 Spring 2007

  7. Compact The Transient Universe: AY 250 Spring 2007

  8. Variable Mukherjee et al 1997 The Transient Universe: AY 250 Spring 2007

  9. 3C 279 Wehrle et al 1997 The Transient Universe: AY 250 Spring 2007

  10. The Transient Universe: AY 250 Spring 2007 Ubertini 2007

  11. Dominant in Energy The Transient Universe: AY 250 Spring 2007

  12. Extragalactic Background EGRB Narumoto & Totani 2006 The Transient Universe: AY 250 Spring 2007

  13. GLAST The Transient Universe: AY 250 Spring 2007

  14. The Transient Universe: AY 250 Spring 2007

  15. Michelson 2007 The Transient Universe: AY 250 Spring 2007

  16. The Transient Universe: AY 250 Spring 2007

  17. The Transient Universe: AY 250 Spring 2007

  18. The Transient Universe: AY 250 Spring 2007

  19. The Transient Universe: AY 250 Spring 2007

  20. The Transient Universe: AY 250 Spring 2007

  21. The Transient Universe: AY 250 Spring 2007

  22. The Transient Universe: AY 250 Spring 2007

  23. The Transient Universe: AY 250 Spring 2007

  24. Padovani 2007 The Transient Universe: AY 250 Spring 2007

  25. MAGIC result The Transient Universe: AY 250 Spring 2007

  26. The Transient Universe: AY 250 Spring 2007

  27. HESS • Atmospheric Cherenkov detector array • 100 m^2 collecting area • 5 deg FOV • 0.16 deg resolution The Transient Universe: AY 250 Spring 2007

  28. HESS Camera 960 PMT pixels The Transient Universe: AY 250 Spring 2007

  29. The Transient Universe: AY 250 Spring 2007

  30. The Transient Universe: AY 250 Spring 2007

  31. The Transient Universe: AY 250 Spring 2007

  32. Imaging Rejection of Cosmic Rays The Transient Universe: AY 250 Spring 2007

  33. Stereoscopic Vision The Transient Universe: AY 250 Spring 2007

  34. Cherenkov Basics • Energy Range • 1 TeV photon produces 100 photons/m^2 on the ground • Sensitivity set by ability to reject cosmic rays • Effective Collecting Area • Not 4 x 100 m^2 • But 50,000 m^2 • Light pool area (250 m diameter) • Stereo vision • To reconstruct signal direction, reject cosmic rays The Transient Universe: AY 250 Spring 2007

  35. Cosmic Ray Discrimination The Transient Universe: AY 250 Spring 2007

More Related