Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 1 Novel Searches for Dark Matter with Neutrino Telescopes Center for Cosmology and Astroparticle Physics Nov 17-18 th , 2008 Prospects for the Search for Dark Matter with Fermi Brian L. Winer The Ohio State University Fermi LAT Dark Matter and New Physics Working Group
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Novel Searches for Dark Matter with Neutrino Telescopes
Prospects for the Search for Dark Matter with Fermi Brian L. Winer The Ohio State University Fermi LAT Dark Matter and New Physics Working Group. Novel Searches for Dark Matter with Neutrino Telescopes Center for Cosmology and Astroparticle Physics Nov 17-18 th , 2008. - PowerPoint PPT Presentation
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Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 1
Novel Searches for Dark Matter with Neutrino Telescopes Center for Cosmology and Astroparticle Physics Nov 17-18th,
2008
Prospects for the Search for Dark Matter with Fermi Brian L. WinerThe Ohio State UniversityFermi LAT Dark Matter and New Physics Working Group
Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 2
Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 3
WIMP annihilation: gamma-ray yield
200GeV mass WIMP
WIMP pair annihilation gamma spectrum
Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 4
Dark Matter in the gamma ray skyMilky Way Halo simulated by Taylor & Babul (2005)
All-sky map of DM gamma ray emission (Baltz 2006)
Only dm annihilation radiation shown….
Galactic center
Milky Way halo
Milky Way satellites
Extragalactic sub haloes/clumps
Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 5
Several Different Search Modes
Search Technique advantages challenges
Galactic center
Good Statistics
Source confusion/Diffuse background
Satellites, subhalosPoint sources
Low background,Good source id
Low statistics
Milky Way halo
Large statistics
Galactic diffuse background
Extra-galactic
Large Statistics
Astrophysics, galactic diffuse background
Spectral lines No astrophysical uncertainties, good source id
Low statistics
Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 6
Total GCR protons GCR He GCR electrons albedo protons,pbar albedo positrons albedo electrons albedo gammas.
Background to all photons: Charged Particles
-Rejection power:
~105-6
-γ efficiency:
~0.8
Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 7
Galactic Center
Advantage: Largest Source of DM Photons
Problems: Astrophysical Sources CR Accelarators High Energy Gamma Sources
Behavior at Fermi Energies??
Initial Sensitivity Estimation ROI = 0.5 deg of GC, E > 1 GeV Truncated NFW Profile. Simulate Particle-yield (DarkSUSY) Background:
Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 25
Acknowledgements
E Baltz, B. Berenji, E. Bloom, J. Chiang, Y. Edmonds, G. Godfrey, P. Wang, L. Wai, J. Cohen-Tanugi(SLAC/KIPAC)
I. Moskalenko (Stanford) A. Morselli, A. Lionetto (INFN Roma/Tor Vergata) E. Nuss (Montpellier) R. Hughes, A. Sander, P. Smith, B. Winer (Ohio State) L. Bergström, T. Bringmann, J. Conrad, J. Edsjö, A. Sellerholm
(Stockholm) A. Moiseev (Goddard) G. Bertone (Paris) R. Johnson(Santa Cruz) J. Ormes (Denver) R. Rando (Padova) A. Strong (Max-Planck)
Pre-launch Estimates for GLAST Sensitivity to Dark Matter Annihilation SignalsE. A. Baltz, et al JCAP, 07 (2008) 013, arXiv: 0806.2911v2
Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 26
Parameter Space
Brian L. Winer, Ohio State University Fermi Gamma-Ray Space Telescope CCAPP DM Workshop Page 27