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

Journal article


Publication Details

Author(s): 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
Journal: Astrophysical Journal Letters
Publisher: American Astronomical Society
Publication year: 2015
Volume: 809
ISSN: 2041-8205


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.



FAU Authors / FAU Editors

Funk, Stefan Prof. Dr.
Lehrstuhl für Physik


External institutions with authors

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


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://dx.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).

BibTeX: 

Last updated on 2018-12-07 at 19:23