Dark matter constraints from observations of 25 Milky Way satellite galaxies with the Fermi Large Area Telescope

Ackermann M, Albert A, Anderson B, Baldini L, Ballet J, Barbiellini G, Bastieri D, Bechtol K, Bellazzini R, Bissaldi E, Bloom ED, Bonamente E, Bouvier A, Brandt TJ, Bregeon J, Brigida M, Bruel P, Buehler R, Buson S, Caliandro GA, Cameron RA, Caragiulo M, Caraveo PA, Cecchi C, Charles E, Chekhtman A, Chiang J, Ciprini S, Claus R, Cohen-Tanugi J, Conrad J, D'Ammando F, de Angelis A, Dermer CD, Digel SW, do Couto e Silva E, Drell PS, Drlica-Wagner A, Essig R, Favuzzi C, Ferrara EC, Franckowiak A, Fukazawa Y, Funk S, Fusco P, Gargano F, Gasparrini D, Giglietto N, Giroletti M, Godfrey G, Gomez-Vargas GA, Grenier IA, Guiriec S, Gustafsson M, Hayashida M, Hays E, Hewitt J, Hughes RE, Jogler T, Kamae T, Knoedlseder J, Kocevski D, Kuss M, Larsson S, Latronico L, Garde ML, Longo F, Loparco F, Lovellette MN, Lubrano P, Martinez G, Mayer M, Mazziotta MN, Michelson PF, Mitthumsiri W, Mizuno T, Moiseev AA, Monzani ME, Morselli A, Moskalenko IV, Murgia S, Nemmen R, Nuss E, Ohsugi T, Orlando E, Ormes JF, Perkins JS, Piron F, Pivato G, Porter TA, Raino S, Rando R, Razzano M, Razzaque S, Reimer A, Reimer O, Ritz S, Sanchez-Conde M, Sehgal N, Sgro C, Siskind EJ, Spinelli P, Strigari L, Suson DJ, Tajima H, Takahashi H, Thayer JB, Tibaldo L, Tinivella M, Torres DF, Uchiyama Y, Usher TL, Vandenbroucke J, Vianello G, Vitale V, Werner M, Winer BL, Wood KS, Wood M, Zaharijas G, Zimmer S (2014)

Publication Status: Published

Publication Type: Journal article

Publication year: 2014


Publisher: American Physical Society

Book Volume: 89

DOI: 10.1103/PhysRevD.89.042001


The dwarf spheroidal satellite galaxies of the Milky Way are some of the most dark-matter-dominated objects known. Due to their proximity, high dark matter content, and lack of astrophysical backgrounds, dwarf spheroidal galaxies are widely considered to be among the most promising targets for the indirect detection of dark matter via gamma rays. Here we report on.-ray observations of 25 Milky Way dwarf spheroidal satellite galaxies based on 4 years of Fermi Large Area Telescope (LAT) data. None of the dwarf galaxies are significantly detected in. rays, and we present.-ray flux upper limits between 500 MeV and 500 GeV. We determine the dark matter content of 18 dwarf spheroidal galaxies from stellar kinematic data and combine LAT observations of 15 dwarf galaxies to constrain the dark matter annihilation cross section. We set some of the tightest constraints to date on the annihilation of dark matter particles with masses between 2 GeV and 10 TeV into prototypical standard model channels. We find these results to be robust against systematic uncertainties in the LAT instrument performance, diffuse.-ray background modeling, and assumed dark matter density profile.

Authors with CRIS profile

Involved external institutions

Stanford University US United States (USA) (US) State University of New York at Albany (UNY Albany / UAlbany) US United States (USA) (US) University of Bari Aldo Moro / Università degli Studi di Bari Aldo Moro IT Italy (IT) National Aeronautics and Space Administration (NASA) US United States (USA) (US) Hiroshima University / 広島大学 JP Japan (JP) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) IT Italy (IT) Italian Space Agency / Agenzia Spaziale Italiana (ASI) IT Italy (IT) 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) Université libre de Bruxelles (ULB) / Free University of Brussels BE Belgium (BE) University of Tokyo JP Japan (JP) Ohio State University US United States (USA) (US) National Center for Scientific Research / Centre national de la recherche scientifique (CNRS) FR France (FR) Stockholm University / Stockholms universitet SE Sweden (SE) U.S. Naval Research Laboratory US United States (USA) (US) University of California Irvine US United States (USA) (US) University of Montpellier / Université Montpellier FR France (FR) University of Denver US United States (USA) (US) University of Padua / Universita degli Studi di Padova IT Italy (IT) University of Johannesburg ZA South Africa (ZA) University of California Santa Cruz US United States (USA) (US) NYCB Real-Time Computing, Inc. US United States (USA) (US) Purdue University Northwest / Purdue University Calumet US United States (USA) (US) Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC) ES Spain (ES) Leopold-Franzens-Universität Innsbruck / University of Innsbruck AT Austria (AT) Deutsches Elektronen-Synchrotron DESY DE Germany (DE) University of Maryland US United States (USA) (US) University of Pisa / Università di Pisa (UniPi) IT Italy (IT) École Polytechnique - Université Paris-Saclay FR France (FR) George Mason University US United States (USA) (US) University of Udine / Università degli Studi di Udine IT Italy (IT)

How to cite


Ackermann, M., Albert, A., Anderson, B., Baldini, L., Ballet, J., Barbiellini, G.,... Zimmer, S. (2014). Dark matter constraints from observations of 25 Milky Way satellite galaxies with the Fermi Large Area Telescope. Physical Review D - Particles, Fields, Gravitation and Cosmology, 89. https://doi.org/10.1103/PhysRevD.89.042001


Ackermann, M., et al. "Dark matter constraints from observations of 25 Milky Way satellite galaxies with the Fermi Large Area Telescope." Physical Review D - Particles, Fields, Gravitation and Cosmology 89 (2014).

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