CONSTRAINTS ON THE GALACTIC HALO DARK MATTER FROM FERMI-LAT DIFFUSE MEASUREMENTS

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

Journal

Book Volume: 761

Journal Issue: 2

DOI: 10.1088/0004-637X/761/2/91

Abstract

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.

Authors with CRIS profile

Involved external institutions

Deutsches Elektronen-Synchrotron DESY DE Germany (DE) Stanford University US United States (USA) (US) University of California Santa Cruz US United States (USA) (US) University of Pisa / Università di Pisa (UniPi) IT Italy (IT) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) IT Italy (IT) University of Bari Aldo Moro / Università degli Studi di Bari Aldo Moro IT Italy (IT) Italian Space Agency / Agenzia Spaziale Italiana (ASI) IT Italy (IT) AlbaNova University Centre / Kungliga Tekniska Högskolan AlbaNova Universitetscentrum SE Sweden (SE) National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF) IT Italy (IT) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot FR France (FR) University of Montpellier / Université Montpellier FR France (FR) University of Padua / Universita degli Studi di Padova IT Italy (IT) George Mason University US United States (USA) (US) National Aeronautics and Space Administration (NASA) US United States (USA) (US) NYCB Real-Time Computing, Inc. US United States (USA) (US) Japan Aerospace eXploration Agency (JAXA) JP Japan (JP) École Polytechnique - Université Paris-Saclay FR France (FR) Institut de Ciències de l'Espai (ICE) ES Spain (ES) Università degli Studi di Perugia IT Italy (IT) Stockholm University / Stockholms universitet SE Sweden (SE) University of Udine / Università degli Studi di Udine IT Italy (IT) U.S. Naval Research Laboratory US United States (USA) (US) Hiroshima University JP Japan (JP) Ohio State University US United States (USA) (US) University of Iceland (UI) / Háskóli Íslands IS Iceland (IS) National Center for Scientific Research / Centre national de la recherche scientifique (CNRS) FR France (FR) Université Bordeaux 1, Sciences et Technologies FR France (FR) Boise State University US United States (USA) (US) University of Denver US United States (USA) (US) Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics DE Germany (DE) Purdue University Northwest / Purdue University Calumet US United States (USA) (US) University of Washington US United States (USA) (US)

How to cite

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://dx.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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