High Energy Electron Signals from Dark Matter Annihilation in the Sun

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In this paper we discuss two mechanisms by which high energy electrons resulting from dark matter annihilations in or near the Sun can arrive at the Earth. Specifically, electrons can escape the sun if DM annihilates into long-lived states, or if dark matter scatters inelastically, which would leave a halo of dark matter outside of the sun. Such a localized source of electrons may affect the spectra observed by experiments with narrower fields of view oriented towards the sun, such as ATIC, differently from those with larger fields of view such as Fermi. We suggest a simple test of these ... continued below

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5 pages

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Schuster, Philip; /SLAC; Toro, Natalia; /Stanford U., ITP; Weiner, Neal; Yavin, Itay et al. April 9, 2012.

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In this paper we discuss two mechanisms by which high energy electrons resulting from dark matter annihilations in or near the Sun can arrive at the Earth. Specifically, electrons can escape the sun if DM annihilates into long-lived states, or if dark matter scatters inelastically, which would leave a halo of dark matter outside of the sun. Such a localized source of electrons may affect the spectra observed by experiments with narrower fields of view oriented towards the sun, such as ATIC, differently from those with larger fields of view such as Fermi. We suggest a simple test of these possibilities with existing Fermi data that is more sensitive than limits from final state radiation. If observed, such a signal will constitute an unequivocal signature of dark matter.

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5 pages

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  • Journal Name: Physical Review. D, Particles, Fields, Gravitation and Cosmology; Journal Volume: 82; Journal Issue: 11

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  • Report No.: SLAC-PUB-14939
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1038428
  • Archival Resource Key: ark:/67531/metadc836786

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Office of Scientific & Technical Information Technical Reports

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  • April 9, 2012

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  • May 19, 2016, 3:16 p.m.

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  • Dec. 5, 2016, 7:29 p.m.

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Schuster, Philip; /SLAC; Toro, Natalia; /Stanford U., ITP; Weiner, Neal; Yavin, Itay et al. High Energy Electron Signals from Dark Matter Annihilation in the Sun, article, April 9, 2012; United States. (digital.library.unt.edu/ark:/67531/metadc836786/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.