On the detectability of Galactic dark matter annihilation into monochromatic gamma-rays

  • Monochromatic γ-rays are thought to be the smoking gun signal for identifying dark matter annihilation. However, the flux of monochromatic γ-rays is usually suppressed by virtual quantum effects since dark matter should be neutral and does not couple with γ-rays directly. In this work, we study the detection strategy of the monochromatic γ-rays in a future space-based detector. The flux of monochromatic γ-rays between 50 GeV and several TeV is calculated by assuming the supersymmetric neutralino as a typical dark matter candidate. The detection both by focusing on the Galactic center and in a scan mode that detects γ-rays from the whole Galactic halo are compared. The detector performance for the purpose of monochromatic γ-ray detection, with different energy and angular resolution, field of view, and background rejection efficiencies, is carefully studied with both analytical and fast Monte-Carlo methods.
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  • [1] Gondolo P, Edsj J, Ullio P et al. Journal of Cosmology and Astro Particle Physics, 2004, 7: 82 Catena R, Ullio P. Journal of Cosmology and Astroparticle Physics,2010, 8: 43 Salucci P, Nesti F, Gentile G, Frigerio Martins C. Astron. Astrophys., 2010, 523: A83+4 Komatsu E, Smith K M, Dunkley, J et al. ArXiv e-prints, 2010, arXiv:1001.45385 Navarro J F, Frenk C S, White S D M. Astrophys. J, 1997, 490: 4936 Moore B, Quinn T, Governato F, Stadel J, Lake G. Mon. Not. Roy. Astron. Soc., 1999, 310: 11477 Navarro J F, Ludlow A, Springel V et al. Mon. Not. Roy. Astron. Soc., 2010, 402: 218 Jing Y P, Suto Y. Astrophys. J. Lett., 2000, 529: L699 Berezinsky V S, Gurevich A V, Zybin K P. Physics Letters B, 1992, 294: 22110 Lavalle J, YUAN Q, Maurin D, BI X. Astron. Astrophys., 2008, 479: 42711 Tormen G, Diaferio A, Syer D. Mon. Not. Roy. Astron. Soc., 1998, 299: 72812 Moore B, Ghigna S, Governato F et al. Astrophys. J. Lett., 1999, 524: L1913 Ghigna S, Moore B, Governato F et al. Astrophys. J, 2000, 544: 61614 Zentner A R, Bullock J S. Astrophys. J, 2003, 598: 4915 GAO L, White S D M, Jenkins A, Stoehr F, Springel V. Mon. Not. Roy. Astron. Soc., 2004, 355: 81916 Diemand J, Moore B, Stadel J. Mon. Not. Roy. Astron. Soc., 2004, 352: 53517 Springel V,WANG J, Vogelsberger M et al. Mon. Not. Roy. Astron. Soc., 2008, 391: 168518 Bullock J S, Kolatt T S, Sigad Y et al. Mon. Not. Roy. Astron. Soc., 2001, 321: 55919 Gaisser T K, Honda M, Lipari P, Stanev T. International Cosmic Ray Conference, 2001, 5: 1643-+20 Abdo A A, Ackermann M, Ajello M et al. Physical Review Letters, 2009, 102: 18110121 Aharonian F, Akhperjanian A G, Barres de Almeida U et al. Physical Review Letters, 2008, 101: 26110422 Aharonian F, Akhperjanian A G, Anton G et al. Astron. Astrophys., 2009, 508: 56123 Abdo A A, Ackermann M, Ajello M et al. Physical Review Letters, 2010, 104: 10110124 Sreekumar P, Bertsch D L, Dingus B L et al. Astrophys. J, 1998, 494: 52325 Abdo A A, Ackermann M, Ajello M et al. Astrophys. J, 2009, 703: 124926 Abdo A A, Ackermann M, Ajello M et al. Physical Review Letters, 2009, 103: 25110127 Hunter S D, Bertsch D L, Catelli J R et al. Astrophys. J, 1997, 481: 20528 Bergstrm L, Ullio P, Buckley J H. Astroparticle Physics, 1998, 9: 13729 Aharonian F, Akhperjanian A G, Bazer-Bachi A R et al. Nature, 2006, 439: 69530 Mayer-Hasselwander H A, Bertsch D L, Dingus B L et al. Astron. Astrophys., 1998, 335: 16131 Aharonian F, Akhperjanian A G, Bazer-Bachi A R et al. Physical Review Letters, 2006, 97: 22110232 Abdo A A, Ackermann M, Ajello M et al. Astrophys. J. Supp., 2009, 183: 4633 Aharonian F, Akhperjanian A G, Anton G et al. Astron. Astrophys., 2009, 503: 817
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TANG Zhi-Cheng, YUAN Qiang, BI Xiao-Jun and CHEN Guo-Ming. On the detectability of Galactic dark matter annihilation into monochromatic gamma-rays[J]. Chinese Physics C, 2011, 35(8): 725-734. doi: 10.1088/1674-1137/35/8/006
TANG Zhi-Cheng, YUAN Qiang, BI Xiao-Jun and CHEN Guo-Ming. On the detectability of Galactic dark matter annihilation into monochromatic gamma-rays[J]. Chinese Physics C, 2011, 35(8): 725-734.  doi: 10.1088/1674-1137/35/8/006 shu
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Received: 2010-11-05
Revised: 1900-01-01
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On the detectability of Galactic dark matter annihilation into monochromatic gamma-rays

Abstract: Monochromatic γ-rays are thought to be the smoking gun signal for identifying dark matter annihilation. However, the flux of monochromatic γ-rays is usually suppressed by virtual quantum effects since dark matter should be neutral and does not couple with γ-rays directly. In this work, we study the detection strategy of the monochromatic γ-rays in a future space-based detector. The flux of monochromatic γ-rays between 50 GeV and several TeV is calculated by assuming the supersymmetric neutralino as a typical dark matter candidate. The detection both by focusing on the Galactic center and in a scan mode that detects γ-rays from the whole Galactic halo are compared. The detector performance for the purpose of monochromatic γ-ray detection, with different energy and angular resolution, field of view, and background rejection efficiencies, is carefully studied with both analytical and fast Monte-Carlo methods.

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