Spectral analysis of the gamma-ray background near the dwarf Milky Way satellite Segue 1: Improved limits on the cross section of neutralino dark matter annihilation

doi:10.1103/PhysRevD.86.063521

Title: Spectral analysis of the gamma-ray background near the dwarf Milky Way satellite Segue 1: Improved limits on the cross section of neutralino dark matter annihilation

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Abstract

The indirect detection of dark matter requires that dark matter annihilation products be discriminated from conventional astrophysical backgrounds. We re-analyze GeV-band gamma-ray observations of the prominent Milky Way dwarf satellite galaxy Segue 1, for which the expected astrophysical background is minimal. Here, we explicitly account for the angular extent of the conservatively expected gamma-ray signal and keep the uncertainty in the dark-matter profile external to the likelihood analysis of the gamma-ray data.

Authors:

Baushev, A. N. ^[1]; Federici, S. ^[1]; Pohl, M. ^[1]

Univ. of Potsdam (Germany). Inst. of Physics and Astronomy

Publication Date:: 2012-09-20

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

Sponsoring Org.:: USDOE

OSTI Identifier:: 1356671

Grant/Contract Number:: AC02-76SF00515

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review. D, Particles, Fields, Gravitation and Cosmology

Additional Journal Information:: Journal Volume: 86; Journal Issue: 6; Journal ID: ISSN 1550-7998

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats


                    Baushev, A. N., Federici, S., and Pohl, M. Spectral analysis of the gamma-ray background near the dwarf Milky Way satellite Segue 1: Improved limits on the cross section of neutralino dark matter annihilation.  United States: N. p., 2012. 
        Web.  doi:10.1103/PhysRevD.86.063521.

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                    Baushev, A. N., Federici, S., & Pohl, M. Spectral analysis of the gamma-ray background near the dwarf Milky Way satellite Segue 1: Improved limits on the cross section of neutralino dark matter annihilation.  United States.  doi:10.1103/PhysRevD.86.063521.

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                    Baushev, A. N., Federici, S., and Pohl, M. Thu .  
        "Spectral analysis of the gamma-ray background near the dwarf Milky Way satellite Segue 1: Improved limits on the cross section of neutralino dark matter annihilation".  United States.  doi:10.1103/PhysRevD.86.063521.  https://www.osti.gov/servlets/purl/1356671.

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@article{osti_1356671,

  title        = {Spectral analysis of the gamma-ray background near the dwarf Milky Way satellite Segue 1: Improved limits on the cross section of neutralino dark matter annihilation},

  author       = {Baushev, A. N. and Federici, S. and Pohl, M.},

  abstractNote = {The indirect detection of dark matter requires that dark matter annihilation products be discriminated from conventional astrophysical backgrounds. We re-analyze GeV-band gamma-ray observations of the prominent Milky Way dwarf satellite galaxy Segue 1, for which the expected astrophysical background is minimal. Here, we explicitly account for the angular extent of the conservatively expected gamma-ray signal and keep the uncertainty in the dark-matter profile external to the likelihood analysis of the gamma-ray data.},

  doi          = {10.1103/PhysRevD.86.063521},

  journal      = {Physical Review. D, Particles, Fields, Gravitation and Cosmology},

  number       = 6,

  volume       = 86,

  place        = {United States},

  year         = {2012},

  month        = {9}

}

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DOI: 10.1103/PhysRevD.86.063521

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