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Search for gamma-ray emission from DES dwarf spheroidal galaxy candidates with Fermi-LAT data

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Search for gamma-ray emission from DES dwarf spheroidal galaxy candidates with Fermi-LAT data

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Título Search for gamma-ray emission from DES dwarf spheroidal galaxy candidates with Fermi-LAT data
Autor Drlica-Wagner, Alex
Albert, Andrea
Bechtol, Keith
Wood, Matthew Dunseth
Strigari, Louis E.
Sánchez-Conde, Miguel A.
Baldini, Luca
Essig, Rouven
Cohen-Tanugi, Johann
Anderson, Brandon
Bellazzini, Ronaldo
Bloom, Elliott D.
Caputo, Regina
Cecchi, Claudia
Charles, Eric Andre
Chiang, James
De Angelis, Alessandro
Funk, Stefan
Fusco, Piergiorgio
Gargano, Fabio
Giglietto, Nico
Giordano, Francesco
Guiriec, Sylvain
Gustafsson, Michael
Kuss, Michael
Loparco, Francesco
Lubrano, Pasquale
Mirabal, N.
Mizuno, Tsunefumi
Morselli, Aldo
Ohsugi, Takashi
Orlando, Elena
Persic, Massimo
Raino, Silvia
Spada, Francesca Romana
Suson, Daniel J.
Zaharijas, Gabrijela
Zimmer, Stephan
Abbott, Timothy M. C.
Allam, Sahar S.
Balbinot, Eduardo
Bauer, Anne Hollister
Benoit-Lévy, Aurélien
Bernstein, Rebecca A.
Bernstein, Gary M.
Bertin, Emmanuel
Brooks, D.
Buckley-Geer, Elizabeth
Burke, David Lyle
Carnero Rosell, Aurelio
Castander Serentill, Francisco Javier
Covarrubias, Ricardo A.
D'Andrea, Christopher B.
Costa, Luiz N. da
DePoy, Darren L.
Desai, S.
Diehl, H. Thomas
Cunha, Carlos Eduardo
Eifler, Tim
Estrada, Juan
Evrard, August E.
Fausti Neto, Angelo
Fernandez, Enrique
Finley, David A.
Flaugher, Brenna
Frieman, Joshua A.
Gaztañaga, Enrique
Gerdes, David W.
Gruen, Daniel
Gruendl, Robert A.
Gutierrez, Gaston R.
Honscheid, K.
Jain, Bhuvnesh
James, David J.
Jeltema, Tesla E.
Kent, Stephen M.
Kron, Richard G.
Kuehn, Kyler
Kuropatkin, Nikolay P.
Lahav, Ofer
Li, T. S.
Luque Canaza, Elmer Fidel
Maia, Marcio Antonio Geimba
Makler, Martín
March, Marisa Cristina
Marshall, Jennifer L.
Martini, Paul
Merritt, K. Wyatt
Miller, Christopher J.
Miquel, Ramon
Mohr, Joseph J.
Neilsen, Eric H.
Nord, Brian Dennis
Ogando, Ricardo L.C.
Peoples, John
Petravick, Donald L.
Pieres, Adriano
Plazas Malagón, Andrés Alejandro
Queiroz, Anna Bárbara de Andrade
Romer, Anita K.
Roodman, Aaron
Rykoff, Eli
Sako, Masao
Sanchez-Alvaro, Eusebio
Santiago, Basilio Xavier
Scarpine, Victor Emanuel
Schubnell, Michael
Sevilla Noarbe, Ignacio
Smith, Robert Christopher
Soares-Santos, Marcelle
Sobreira, Flávia
Suchyta, Eric
Swanson, Molly E. C.
Tarle, Gregory
Thaler, Jon J.
Thomas, D.
Tucker, Douglas L.
Walker, Alistair
Wechsler, Risa H.
Wester, William Carl
Williams, P.
Yanny, Brian
Zuntz, J.
Fermi LAT Collaboration
DES Collaboration
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 20 GeV annihilating via the bb¯ or τ+τ− channels.
Contido em The astrophysical journal. Bristol. Vol. 809, no. 1 (Aug. 2015), L4, 8 p.
Assunto Galaxia
Leptons pesados
Materia escura
Quarks
[en] Dark matter
[en] Galaxies: dwarf
[en] Gamma rays: galaxies
[en] Local group
Origem Estrangeiro
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/126971
Arquivos Descrição Formato
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