Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data

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

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

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Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data

Journal article

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Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data

A. Drlica-Wagner, A. Albert, K. Bechtol, M. Wood, L. Strigari, M. Sanchez-Conde, L. Baldini, R. Essig, Johann Cohen-Tanugi, B. Anderson, …

The Astrophysical Journal Letters, Vol.809(1)

2015

DOI: https://doi.org/10.1088/2041-8205/809/1/L4

Abstract

dark matter

galaxies: dwarf

gamma rays: galaxies

Local Group

gamma ray: emission

white dwarf

cross section: annihilation

dark matter: annihilation

dark matter: halo

galaxy

dark energy

satellite

thermal

GLAST

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 $\lesssim 20\,\mathrm{GeV}$ annihilating via the $b\bar{b}$ or τ(+)τ(−) channels.

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Title: Search for Gamma-Ray Emission from DES Dwarf Spheroidal Galaxy Candidates with Fermi-LAT Data
Creators - without role: A. Drlica-Wagner - Fermi National Accelerator Laboratory
A. Albert - Kavli Institute for Particle Astrophysics and Cosmology
K. Bechtol - University of Chicago
M. Wood - Stanford University
L. Strigari - Texas A&M University
M. Sanchez-Conde - AlbaNova
L. Baldini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
R. Essig - State University of New York
Johann Cohen-Tanugi - Université de Montpellier, Laboratoire Univers et Particules de Montpellier - LUPM
B. Anderson - Royal Swedish Academy of Sciences
R. Bellazzini - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
E.D. Bloom - Kavli Institute for Particle Astrophysics and Cosmology
R. Caputo - University of California, Santa Cruz
C. Cecchi - University of Perugia
E. Charles - Kavli Institute for Particle Astrophysics and Cosmology
J. Chiang - Kavli Institute for Particle Astrophysics and Cosmology
A. de Angelis - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
S. Funk - Stanford University
P. Fusco - Polytechnic University of Bari
F. Gargano - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
N. Giglietto - Istituto Nazionale di Fisica Nucleare, Sezione di Bari
F. Giordano - Polytechnic University of Bari
S. Guiriec - Goddard Space Flight Center
M. Gustafsson - University of Göttingen
M. Kuss - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
F. Loparco - Polytechnic University of Bari
P. Lubrano - University of Perugia
N. Mirabal - Goddard Space Flight Center
T. Mizuno - Hiroshima University
A. Morselli - Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata
T. Ohsugi - Hiroshima University
E. Orlando - SLAC National Accelerator Laboratory
M. Persic - National Institute for Astrophysics
S. Raino - Polytechnic University of Bari
F. Spada - Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
D.J. Suson - Purdue University Northwest
G. Zaharijas - Istituto Nazionale di Fisica Nucleare, Sezione di Trieste
S. Zimmer - AlbaNova
T. Abbott
S. Allam - Fermi National Accelerator Laboratory
E. Balbinot - University of Surrey
A.H. Bauer - Institute of Space Sciences
A. Benoit-Levy - University College London
R.A. Bernstein - Carnegie Observatories
G.M. Bernstein - University of Pennsylvania
E. Bertin - Sorbonne Université
D. Brooks - University College London
E. Buckley-Geer - Fermi National Accelerator Laboratory
D.L. Burke - SLAC National Accelerator Laboratory
A. Carnero Rosell
F.J. Castander - Institute of Space Sciences
R. Covarrubias - National Center for Supercomputing Applications
C.B. d'Andrea
L.N. da Costa - Laboratório Interinstitucional de e-Astronomia
D.L. Depoy - Mitchell Institute
S. Desai - Excellence Cluster Universe
H.T. Diehl - Fermi National Accelerator Laboratory
C.E. Cunha - Kavli Institute for Particle Astrophysics and Cosmology
T.F. Eifler - Jet Propulsion Laboratory
J. Estrada - Fermi National Accelerator Laboratory
A.E. Evrard - University of Michigan–Ann Arbor
A.Fausti Neto - Laboratório Interinstitucional de e-Astronomia
E. Fernandez - Universitat Autònoma de Barcelona
D.A. Finley - Fermi National Accelerator Laboratory
B. Flaugher - Fermi National Accelerator Laboratory
J. Frieman - University of Chicago
E. Gaztanaga - Institute of Space Sciences
D. Gerdes - University of Michigan–Ann Arbor
D. Gruen - Ludwig-Maximilians-Universität München
R.A. Gruendl - National Center for Supercomputing Applications
G. Gutierrez - Fermi National Accelerator Laboratory
K. Honscheid - The Ohio State University
B. Jain - University of Pennsylvania
D. James - Cerro Tololo Inter-American Observatory
T. Jeltema - University of California, Santa Cruz
S. Kent - Fermi National Accelerator Laboratory
R. Kron - University of Chicago
N. Kuropatkin - Fermi National Accelerator Laboratory
O. Lahav - University College London
T.S. Li - Texas A&M University
E. Luque - Universidade Federal do Rio Grande do Sul
M.A.G. Maia - Valongo Observatory
M. Makler - Centro Brasileiro de Pesquisas Físicas
M. March - University of Pennsylvania
J. Marshall - Mitchell Institute
P. Martini - The Ohio State University
K.W. Merritt - Fermi National Accelerator Laboratory
C. Miller - University of Michigan–Ann Arbor
R. Miquel - Institute for High Energy Physics
J. Mohr - Ludwig-Maximilians-Universität München
E. Neilsen - Fermi National Accelerator Laboratory
B. Nord - Fermi National Accelerator Laboratory
R. Ogando
J. Peoples - Fermi National Accelerator Laboratory
D. Petravick - National Center for Supercomputing Applications
A. Pieres - Universidade Federal do Rio Grande do Sul
A.A. Plazas - Jet Propulsion Laboratory
A. Queiroz
A.K. Romer - University of Sussex
A. Roodman - Kavli Institute for Particle Astrophysics and Cosmology
E.S. Rykoff - SLAC National Accelerator Laboratory
M. Sako - University of Pennsylvania
E. Sanchez - Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
B. Santiago - Universidade Federal do Rio Grande do Sul
V. Scarpine - Fermi National Accelerator Laboratory
M. Schubnell - University of Michigan–Ann Arbor
I. Sevilla
R.C. Smith - Cerro Tololo Inter-American Observatory
M. Soares-Santos - Fermi National Accelerator Laboratory
F. Sobreira - Fermi National Accelerator Laboratory
E. Suchyta - The Ohio State University
M.E.C. Swanson - National Center for Supercomputing Applications
G. Tarle - University of Michigan–Ann Arbor
J. Thaler - University of Illinois Urbana-Champaign
D. Thomas - University of Portsmouth
D. Tucker - Fermi National Accelerator Laboratory
A. Walker - Cerro Tololo Inter-American Observatory
R.H. Wechsler - SLAC National Accelerator Laboratory
W. Wester - Fermi National Accelerator Laboratory
P. Williams - University of Chicago
B. Yanny - Fermi National Accelerator Laboratory
J. Zuntz - University of Manchester
N. Sehgal - Stony Brook University
K. Kuehn - Argonne National Laboratory
Publication Details: The Astrophysical Journal Letters, Vol.809(1)
Identifiers: 9935355509311
Academic Unit: Laboratoire Univers et Particules de Montpellier - LUPM
Language: English
Resource Type: Journal article
Local Fields: hal-02017090