Ackermann M, Ajello M, Albert A, Atwood WB, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bellazzini R, Bissaldi E, Blandford RD, Bloom ED, Bonino R, Bottacini E, Brandt TJ, Bregeon , Bruel P, Buehler R, Burnett TH, Cameron RA, Caputo R, Caragiulo M, Caraveo PA, Cavazzuti E, Cecchi C, Charles E, Chekhtman A, Chiang J, Chiappo A, Chiaro G, Ciprini S, Conrad J, Costanza F, Cuoco A, Cutini S, D'Ammando F, De Palmai F, Desiante R, Digel SW, Di Lalla N, Di Mauro M, Di Venere L, Drell PS, Favuzzi C, Fegan J, Ferrara EC, Fockes WB, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gaspanini D, Giglietto N, Giordano F, Giroletti M, Glanzman T, Gomez-Vargas GA, Green D, Grenier IA, Grove JE, Guillemot L, Guiriec S, Gustafsson M, Harding AK, Hays E, Hewitt JW, Horan D, Jogler T, Johnson AS, Kamae T, Kocevski D, Kuss M, La Mura G, Larsson S, Latronico L, Li J, Longo F, Loparco F, Lovellette MN, Lubrano P, Magill JD, Maldera S, Malyshev D, Manfreda A, Martin P, Mazziottam MN, Michelson PF, Mirabal N, Mitthumsiri W, Mizuno T, Moiseev AA, Monzani ME, Morselli A, Negro M, Nuss E, Ohsugi T, Orienti M, Orlando E, Ormes JF, Paneque D, Perkins JS, Persic M, Pesce-Rollins M, Piron F, Principe G, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Sanchez-Conde M, Sgro C, Simone D, Siskind EJ, Spada F, Spandrel G, Spinelli P, Suson DJ, Tajima H, Tanaka K, Thayer JB, Tibaldo L, Torres DF, Troja E, Uchiyama Y, Vianello G, Wood KS, Wood M, Zaharijas G, Zimmer S (2017)
Publication Type: Journal article
Publication year: 2017
Book Volume: 840
Journal Issue: 1
The region around the Galactic Center (GC) is now well established to be brighter at energies of a few GeV than what is expected from conventional models of diffuse gamma-ray emission and catalogs of known gamma-ray sources. We study the GeV excess using 6.5 yr of data from the Fermi Large Area Telescope. We characterize the uncertainty of the GC excess spectrum and morphology due to uncertainties in cosmic-ray source distributions and propagation, uncertainties in the distribution of interstellar gas in the Milky Way, and uncertainties due to a potential contribution from the Fermi bubbles. We also evaluate uncertainties in the excess properties due to resolved point sources of gamma rays. The GC is of particular interest, as it would be expected to have the brightest signal from annihilation of weakly interacting massive dark matter (DM) particles. However, control regions along the Galactic plane, where a DM signal is not expected, show excesses of similar amplitude relative to the local background. Based on the magnitude of the systematic uncertainties, we conservatively report upper limits for the annihilation cross-section as a function of particle mass and annihilation channel.
APA:
Ackermann, M., Ajello, M., Albert, A., Atwood, W.B., Baldini, L., Ballet, J.,... Zimmer, S. (2017). The Fermi Galactic Center GeV Excess and Implications for Dark Matter. Astrophysical Journal, 840(1). https://doi.org/10.3847/1538-4357/aa6cab
MLA:
Ackermann, Markus, et al. "The Fermi Galactic Center GeV Excess and Implications for Dark Matter." Astrophysical Journal 840.1 (2017).
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