SEARCH FOR GAMMA-RAY EMISSION FROM DES DWARF SPHEROIDAL GALAXY CANDIDATES WITH FERMI-LAT DATA

Drlica-Wagner A, Albert A, Bechtol K, Wood M, Strigari L, Sanchez-Conde M, Baldini L, Essig R, Cohen-Tanugi J, Anderson B, Bellazzini R, Bloom ED, Caputo R, Cecchi C, Charles E, Chiang J, De Angelis A, Funk S, Fusco P, Gargano F, Giglietto N, Giordano F, Guiriec S, Gustafsson M, Kuss M, Loparco F, Lubrano P, Mirabal N, Mizuno T, Morselli A, Ohsugi T, Orlando E, Persic M, Raino S, Sehgal N, Spada F, Suson DJ, Zaharijas G, Zimmer S, Abbott T, Allam S, Balbinot E, Bauer AH, Benoit-Levy A, Bernstein RA, Bernstein GM, Bertin E, Brooks D, Buckley-Geer E, Burke DL, Carnero Rosell A, Castander FJ, Covarrubias R, D'Andrea CB, Da Costa LN, Depoy DL, Desai S, Diehl HT, Cunha CE, Eifler TF, Estrada J, Evrard AE, Fausti Neto A, Fernandez E, Finley DA, Flaugher B, Frieman J, Gaztanaga E, Gerdes D, Gruen D, Gruendl RA, Gutierrez G, Honscheid K, Jain B, James D, Jeltema T, Kent S, Kron R, Kuehn K, Kuropatkin N, Lahav O, Li TS, Luque E, Maia MAG, Makler M, March M, Marshall J, Martini P, Merritt KW, Miller C, Miquel R, Mohr J, Neilsen E, Nord B, Ogando R, Peoples J, Petravick D, Pieres A, Plazas AA, Queiroz A, Romer AK, Roodman A, Rykoff ES, Sako M, Sanchez E, Santiago B, Scarpine V, Schubnell M, Sevilla I, Smith RC, Soares-Santos M, Sobreira F, Suchyta E, Swanson MEC, Tarle G, Thaler J, Thomas D, Tucker D, Walker AR, Wechsler RH, Wester W, Williams P, Yanny B, Zuntz J (2015)

Publication Status: Published

Publication Type: Journal article

Publication year: 2015

Journal

Publisher: American Astronomical Society

Book Volume: 809

DOI: 10.1088/2041-8205/809/1/L4

Abstract

Due to their proximity, high dark-matter (DM) content, and apparent absence of non-thermal processes, Milky Way dwarf spheroidal satellite galaxies (dSphs) are excellent targets for the indirect detection of DM. Recently, eight new dSph candidates were discovered using the first year of data from the Dark Energy Survey (DES). We searched for gamma-ray emission coincident with the positions of these new objects in six years of Fermi Large Area Telescope data. We found no significant excesses of gamma-ray emission. Under the assumption that the DES candidates are dSphs with DM halo properties similar to the known dSphs, we computed individual and combined limits on the velocity-averaged DM annihilation cross section for these new targets. If the estimated DM content of these dSph candidates is confirmed, they will constrain the annihilation cross section to lie below the thermal relic cross section for DM particles with masses less than or similar to 20 GeV annihilating via the b (b) over bar or pi(+)pi(-) channels.

Authors with CRIS profile

Involved external institutions

Stanford University United States (USA) (US) University of Manchester United Kingdom (GB) University of Michigan United States (USA) (US) University of Illinois at Urbana-Champaign United States (USA) (US) University of Portsmouth United Kingdom (GB) Fermi National Accelerator Laboratory (Fermilab) United States (USA) (US) Cerro Tololo Inter-American Observatory (CTIO) Chile (CL) Stanford National Accelerator Laboratory (SLAC) United States (USA) (US) University of Chicago United States (USA) (US) Texas A&M University United States (USA) (US) AlbaNova University Centre / Kungliga Tekniska Högskolan AlbaNova Universitetscentrum Sweden (SE) State University of New York at Albany (UNY Albany / UAlbany) United States (USA) (US) University of California Santa Cruz United States (USA) (US) Georg-August-Universität Göttingen Germany (DE) National Aeronautics and Space Administration (NASA) United States (USA) (US) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) Italy (IT) University of Surrey United Kingdom (GB) Spanish National Research Council / Consejo Superior de Investigaciones Científicas (CSIC) Spain (ES) University College London (UCL) United Kingdom (GB) Carnegie Observatories United States (USA) (US) University of Pennsylvania United States (USA) (US) University of Paris 6 - Pierre et Marie Curie / Université Paris VI Pierre et Marie Curie (UPMC) France (FR) Laboratório Iinter-institucional de e-Astronomia (LIneA) / Inter-institutional Laboratory for e-Astronomy Brazil (BR) Excellence Cluster Universe Germany (DE) Institució Catalana de Recerca i Estudis Avançats (ICREA) / Catalan Institution for Research and Advanced Studies Spain (ES) Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics Germany (DE) Ohio State University United States (USA) (US) Australian Astronomical Observatory Australia (AU) Universidade Federal do Rio Grande do Sul (UFRGS) Brazil (BR) Brazilian Center for Physics Research / Centro Brasileiro de Pesquisas Físicas (CBPF) Brazil (BR) California Institute of Technology (Caltech) United States (USA) (US) University of Sussex United Kingdom (GB) Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT) Spain (ES) Hiroshima University Japan (JP) University of Udine / Università degli Studi di Udine Italy (IT) University of Bari Aldo Moro / Università degli Studi di Bari Aldo Moro Italy (IT) University of Pisa / Università di Pisa (UniPi) Italy (IT) Purdue University Northwest / Purdue University Calumet United States (USA) (US) University of Montpellier / Université Montpellier France (FR)

How to cite

APA:

Drlica-Wagner, A., Albert, A., Bechtol, K., Wood, M., Strigari, L., Sanchez-Conde, M.,... Zuntz, J. (2015). SEARCH FOR GAMMA-RAY EMISSION FROM DES DWARF SPHEROIDAL GALAXY CANDIDATES WITH FERMI-LAT DATA. Astrophysical Journal Letters, 809. https://doi.org/10.1088/2041-8205/809/1/L4

MLA:

Drlica-Wagner, A., et al. "SEARCH FOR GAMMA-RAY EMISSION FROM DES DWARF SPHEROIDAL GALAXY CANDIDATES WITH FERMI-LAT DATA." Astrophysical Journal Letters 809 (2015).

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