Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data

Ackermann M, Albert A, Anderson B, Atwood WB, Baldini L, Barbiellini G, Bastieri D, Bechtol K, Bellazzini R, Bissaldi E, Blandford RD, Bloom ED, Bonino R, Bottacini E, Brandt TJ, Bregeon J, Bruel P, Buehler R, Caliandro GA, Cameron RA, Caputo R, Caragiulo M, Caraveo PA, Cecchi C, Charles E, Chekhtman A, Chiang J, Chiaro G, Ciprini S, Claus R, Cohen-Tanugi J, Conrad J, Cuoco A, Cutini S, D'Ammando F, De Angelis A, De Palma F, Desiante R, Digel SW, Di Venere L, Drell PS, Drlica-Wagner A, Essig R, Favuzzi C, Fegan SJ, Ferrara EC, Focke WB, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giordano F, Giroletti M, Glanzman T, Godfrey G, Gomez-Vargas GA, Grenier IA, Guiriec S, Gustafsson M, Hays E, Hewitt JW, Horan D, Jogler T, Johannesson G, Kuss M, Larsson S, Latronico L, Li J, Li L, Garde ML, Longo F, Loparco F, Lubrano P, Malyshev D, Mayer M, Mazziotta MN, Mcenery JE, Meyer ME, Michelson PF, Mizuno T, Moiseev AA, Monzani ME, Morselli A, Murgia S, Nuss E, Ohsugi T, Orienti M, Orlando E, Ormes JF, Paneque D, Perkins JS, Pesce-Rollins M, Piron F, Pivato G, Porter TA, Raino S, Rando R, Razzano M, Reimer A, Reimer O, Ritz S, Sanchez-Conde M, Schulz A, Sehgal N, Sgro C, Siskind EJ, Spada F, Spandre G, Spinelli P, Strigari L, Tajima H, Takahashi HH, Thayer JB, Tibaldo L, Torres DF, Troja E, Vianello G, Werner M, Winer BL, Wood KS, Wood M, Zaharijas G, Zimmer S (2015)

Publication Type: Journal article

Publication year: 2015

Journal

Book Volume: 115

Journal Issue: 23

DOI: 10.1103/PhysRevLett.115.231301

Abstract

The dwarf spheroidal satellite galaxies (dSphs) of the Milky Way are some of the most dark matter (DM) dominated objects known. We report on gamma-ray observations of Milky Way dSphs based on six years of Fermi Large Area Telescope data processed with the new PASS8 event-level analysis. None of the dSphs are significantly detected in gamma rays, and we present upper limits on the DM annihilation cross section from a combined analysis of 15 dSphs. These constraints are among the strongest and most robust to date and lie below the canonical thermal relic cross section for DM of mass less than or similar to 100 GeV annihilating via quark and tau-lepton channels.

Authors with CRIS profile

Involved external institutions

École Polytechnique - Université Paris-Saclay France (FR) Stockholm University / Stockholms universitet Sweden (SE) University of Montpellier / Université Montpellier France (FR) Stanford University United States (USA) (US) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) Italy (IT) University of California Santa Cruz United States (USA) (US) National Aeronautics and Space Administration (NASA) United States (USA) (US) Deutsches Elektronen-Synchrotron DESY Germany (DE) Hiroshima University / 広島大学 Japan (JP) AlbaNova University Centre / Kungliga Tekniska Högskolan AlbaNova Universitetscentrum Sweden (SE) State University of New York at Albany (UNY Albany / UAlbany) United States (USA) (US) George Mason University United States (USA) (US) Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC) Spain (ES) National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF) Italy (IT) Politecnico di Bari Italy (IT) University of North Florida (UNF) United States (USA) (US) University of Iceland (UI) / Háskóli Íslands Iceland (IS) Leopold-Franzens-Universität Innsbruck / University of Innsbruck Austria (AT) U.S. Naval Research Laboratory United States (USA) (US) University of Udine / Università degli Studi di Udine Italy (IT) NYCB Real-Time Computing, Inc. United States (USA) (US) Georg-August-Universität Göttingen Germany (DE) Ohio State University United States (USA) (US) University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot France (FR) University of Maryland United States (USA) (US) University of Denver United States (USA) (US) University of California Irvine United States (USA) (US) Texas A&M University United States (USA) (US) University of Wisconsin - Madison United States (USA) (US) University of Padua / Universita degli Studi di Padova Italy (IT) Fermi National Accelerator Laboratory (Fermilab) United States (USA) (US)

How to cite

APA:

Ackermann, M., Albert, A., Anderson, B., Atwood, W.B., Baldini, L., Barbiellini, G.,... Zimmer, S. (2015). Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data. Physical Review Letters, 115(23). https://doi.org/10.1103/PhysRevLett.115.231301

MLA:

Ackermann, Markus, et al. "Searching for Dark Matter Annihilation from Milky Way Dwarf Spheroidal Galaxies with Six Years of Fermi Large Area Telescope Data." Physical Review Letters 115.23 (2015).

BibTeX: Download