Constraints on cosmological dark matter annihilation from the Fermi-LAT isotropic diffuse gamma-ray measurement

Abdo, A. A.; Ackermann, M.; Ajello, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Bonamente, E.; Borgland, A. W.; Bouvier, A.; Bregeon, J.; Brez, A.; Brigida, M.; Bruel, P.; Burnett, T. H.; Buson, S.; Caliandro, G. A.; Cameron, R. A.; Caraveo, P. A.; Carrigan, S.; Casandjian, J. M.; Cecchi, C.; Çelik, Ö.; Chekhtman, A.; Cheung, C. C.; Chiang, J.; Ciprini, S.; Claus, R.; Cohen-Tanugi, J.; Conrad, J.; Cutini, S.; Dermer, C. D.; Angelis, A. de; Palma, F. de; Digel, S. W.; Silva, E. do Couto e.; Drell, P. S.; Dubois, R.; Dumora, D.; Edmonds, Y.; Farnier, C.; Favuzzi, C.; Fegan, S. J.; Focke, W. B.; Fortin, P.; Frailis, M.; Fukazawa, Y.; Fusco, P.; Gargano, F.; Gasparrini, D.; Gehrels, N.; Germani, S.; Giglietto, N.; Giordano, F.; Glanzman, T.; Godfrey, G.; Grove, J. E.; Guillemot, L.; Guiriec, S.; Gustafsson, M.; Hadasch, D.; Harding, A. K.; Horan, D.; Hughes, R. E.; Johnson, A. S.; Johnson, W. N.; Kamae, T.; Katagiri, H.; Kataoka, J.; Kawai, N.; Kerr, M.; Knödlseder, J.; Kuss, M.; Lande, J.; Latronico, L.; Garde, M. Llena; Longo, F.; Loparco, F.; Lott, B.; Lovellette, M. N.; Lubrano, P.; Makeev, A.; Mazziotta, M. N.; McEnery, J. E.; Meurer, C.; Michelson, P. F.; Mitthumsiri, W.; Mizuno, T.; Monte, C.; Monzani, M. E.; Morselli, A.; Moskalenko, I. V.; Murgia, S.; Nolan, P. L.; Norris, J. P.; Nuss, E.; Ohsugi, T.; Omodei, N.; Orlando, E.; Ormes, J. F.; Paneque, D.; Panetta, J. H.; Parent, D.; Pelassa, V.; Pepe, M.; Pesce-Rollins, M.; Piron, F.; Rainò, S.; Rando, R.; Reimer, A.; Reimer, O.; Reposeur, T.; Rodriguez, A. Y.; Roth, M.; Sadrozinski, H. F. -W; Sander, A.; Parkinson, P. M.  Saz; Scargle, J. D.; Sellerholm, A.; Sgrò, C.; Siskind, E. J.; Smith, P. D.; Spandre, G.; Spinelli, P.; Starck, J. -L; Strickman, M. S.; Suson, D. J.; Takahashi, H.; Tanaka, T.; Thayer, J. B.; Thayer, J. G.; Torres, D. F.; Uchiyama, Y.; Usher, T. L.; Vasileiou, V.; Vilchez, N.; Vitale, V.; Waite, A. P.; Wang, P.; Winer, B. L.; Wood, K. S.; Ylinen, T.; Zaharijas, G.; Ziegler, M.

doi:10.1088/1475-7516/2010/04/014

Title: Constraints on cosmological dark matter annihilation from the Fermi-LAT isotropic diffuse gamma-ray measurement

Journal Article · Thu Apr 01 00:00:00 EDT 2010 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2010/04/014· OSTI ID:1357571

Abdo, A. A.; Ackermann, M.; Ajello, M.; Baldini, L.; Ballet, J.; Barbiellini, G.; Bastieri, D.; Bechtol, K.; Bellazzini, R.; Berenji, B.; Blandford, R. D.; Bloom, E. D.; Bonamente, E.; Borgland, A. W.; Bouvier, A.; Bregeon, J.; Brez, A.; Brigida, M.; Bruel, P.; Burnett, T. H. more »

The first published Fermi large area telescope (Fermi-LAT) measurement of the isotropic diffuse gamma-ray emission is in good agreement with a single power law, and is not showing any signature of a dominant contribution from dark matter sources in the energy range from 20 to 100 GeV. Here, we use the absolute size and spectral shape of this measured flux to derive cross section limits on three types of generic dark matter candidates: annihilating into quarks, charged leptons and monochromatic photons. Predicted gamma-ray fluxes from annihilating dark matter are strongly affected by the underlying distribution of dark matter, and by using different available results of matter structure formation we assess these uncertainties. We also quantify how the dark matter constraints depend on the assumed conventional backgrounds and on the Universe's transparency to high-energy gamma-rays. In reasonable background and dark matter structure scenarios (but not in all scenarios we consider) it is possible to exclude models proposed to explain the excess of electrons and positrons measured by the Fermi-LAT and PAMELA experiments. Derived limits also start to probe cross sections expected from thermally produced relics (e.g. in minimal supersymmetry models) annihilating predominantly into quarks. Finally, for the monochromatic gamma-ray signature, the current measurement constrains only dark matter scenarios with very strong signals.

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Research Organization:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Organization:: USDOE; National Aeronautics and Space Administration

Contributing Organization:: The Fermi LAT Collaboration

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1357571

Journal Information:: Journal of Cosmology and Astroparticle Physics, Vol. 2010, Issue 04; ISSN 1475-7516

Publisher:: Institute of Physics (IOP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 175 works

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Spectral Gamma-Ray Signatures of Cosmological Dark Matter Annihilations Bergström, Lars; Edsjö, Joakim; Ullio, Piero The American Physical Society https://doi.org/10.17877/de290r-4660	text	January 2001
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Constraints on leptonically annihilating Dark Matter from reionization and extragalactic gamma background Huetsi, Gert; Hektor, Andi; Raidal, Martti arXiv https://doi.org/10.48550/arxiv.0906.4550	text	January 2009
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Detecting Dark Matter Annihilation with CMB Polarization : Signatures and Experimental Prospects Padmanabhan, Nikhil; Finkbeiner, Douglas P. arXiv https://doi.org/10.48550/arxiv.astro-ph/0503486	text	January 2005
Anisotropy of the cosmic gamma-ray background from dark matter annihilation Ando, Shin'ichiro; Komatsu, Eiichiro arXiv https://doi.org/10.48550/arxiv.astro-ph/0512217	text	January 2005
What mass are the smallest protohalos? Profumo, Stefano; Sigurdson, Kris; Kamionkowski, Marc arXiv https://doi.org/10.48550/arxiv.astro-ph/0603373	text	January 2006
The Starburst Contribution to the Extra-Galactic Gamma-Ray Background Thompson, Todd A.; Quataert, Eliot; Waxman, Eli arXiv https://doi.org/10.48550/arxiv.astro-ph/0606665	text	January 2006
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Significant Gamma Lines from Inert Higgs Dark Matter Gustafsson, Michael; Lundstrom, Erik; Bergstrom, Lars arXiv https://doi.org/10.48550/arxiv.astro-ph/0703512	text	January 2007
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Non-Baryonic Dark Matter - Observational Evidence and Detection Methods Bergstrom, L. arXiv https://doi.org/10.48550/arxiv.hep-ph/0002126	text	January 2000
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