Ackermann M, Ajello M, Atwood WB, Baldini L, Barbiellini G, Bastieri D, Bechtol K, Bellazzini R, Blandford RD, Bloom ED, Bonamente E, Borgland AW, Bottacini E, Brandt TJ, Bregeon J, Brigida M, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caraveo PA, Casandjian JM, Cecchi C, Charles E, Chekhtman A, Chiang J, Ciprini S, Claus R, Cohen-Tanugi J, Conrad J, Cuoco A, Cutini S, D'Ammando F, De Angelis A, De Palma F, Dermer CD, Do Couto E Silva E, Drell PS, Drlica-Wagner A, Falletti L, Favuzzi C, Fegan SJ, Focke WB, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Germani S, Giglietto N, Giordano F, Giroletti M, Glanzman T, Godfrey G, Grenier IA, Guiriec S, Gustafsson M, Hadasch D, Hayashida M, Horan D, Hughes RE, Jackson MS, Jogler T, Johannesson G, Johnson AS, Kamae T, Knoedlseder J, Kuss M, Lande J, Latronico L, Lionetto AM, Garde ML, Longo F, Loparco F, Lott B, Lovellette MN, Lubrano P, Mazziotta MN, Mcenery JE, Mehault J, Michelson PF, Mitthumsiri W, Mizuno T, Moiseev AA, Monte C, Monzani ME, Morselli A, Moskalenko IV, Murgia S, Naumann-Godo M, Norris JP, Nuss E, Ohsugi T, Orienti M, Orlando E, Ormes JF, Paneque D, Panetta JH, Pesce-Rollins M, Pierbattista M, Piron F, Pivato G, Poon H, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Romoli C, Sbarra C, Scargle JD, Sgro C, Siskind EJ, Spandre G, Spinelli P, Stawarz L, Strong AW, Suson DJ, Tajima H, Takahashi HH, Tanaka T, Thayer JG, Thayer JB, Tibaldo L, Tinivella M, Tosti G, Troja E, Usher TL, Vandenbroucke J, Vasileiou V, Vianello G, Vitale V, Waite AP, Wallace E, Wood KS, Wood M, Yang Z, Zaharijas G, Zimmer S (2012)
Publication Type: Journal article
Publication year: 2012
Book Volume: 761
Journal Issue: 2
DOI: 10.1088/0004-637X/761/2/91
We have performed an analysis of the diffuse gamma-ray emission with the Fermi Large Area Telescope (LAT) in the Milky Way halo region, searching for a signal from dark matter annihilation or decay. In the absence of a robust dark matter signal, constraints are presented. We consider both gamma rays produced directly in the dark matter annihilation/decay and produced by inverse Compton scattering of the e(+)/e(-) produced in the annihilation/decay. Conservative limits are derived requiring that the dark matter signal does not exceed the observed diffuse gamma-ray emission. A second set of more stringent limits is derived based on modeling the foreground astrophysical diffuse emission using the GALPROP code. Uncertainties in the height of the diffusive cosmic-ray halo, the distribution of the cosmic-ray sources in the Galaxy, the index of the injection cosmic-ray electron spectrum, and the column density of the interstellar gas are taken into account using a profile likelihood formalism, while the parameters governing the cosmic-ray propagation have been derived from fits to local cosmic-ray data. The resulting limits impact the range of particle masses over which dark matter thermal production in the early universe is possible, and challenge the interpretation of the PAMELA/Fermi-LAT cosmic ray anomalies as the annihilation of dark matter.
APA:
Ackermann, M., Ajello, M., Atwood, W.B., Baldini, L., Barbiellini, G., Bastieri, D.,... Zimmer, S. (2012). CONSTRAINTS ON THE GALACTIC HALO DARK MATTER FROM FERMI-LAT DIFFUSE MEASUREMENTS. Astrophysical Journal, 761(2). https://doi.org/10.1088/0004-637X/761/2/91
MLA:
Ackermann, Markus, et al. "CONSTRAINTS ON THE GALACTIC HALO DARK MATTER FROM FERMI-LAT DIFFUSE MEASUREMENTS." Astrophysical Journal 761.2 (2012).
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