2015ApJ...809L...4D

Query : 2015ApJ...809L...4D

2015ApJ...809L...4D - Astrophys. J., 809, L4 (2015/August-2)

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 E.D., 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 D.J., ZAHARIJAS G., ZIMMER S. (The Fermi-LAT Collaboration), ABBOTT T., ALLAM S., BALBINOT E., BAUER A.H., BENOIT-LEVY A., BERNSTEIN R.A., BERNSTEIN G.M., BERTIN E., BROOKS D., BUCKLEY-GEER E., BURKE D.L., CARNERO ROSELL A., CASTANDER F.J., COVARRUBIAS R., D'ANDREA C.B., DA COSTA L.N., DEPOY D.L., DESAI S., DIEHL H.T., CUNHA C.E., EIFLER T.F., ESTRADA J., EVRARD A.E., FAUSTI NETO A., FERNANDEZ E., FINLEY D.A., FLAUGHER B., FRIEMAN J., GAZTANAGA E., GERDES D., GRUEN D., GRUENDL R.A., GUTIERREZ G., HONSCHEID K., JAIN B., JAMES D., JELTEMA T., KENT S., KRON R., KUEHN K., KUROPATKIN N., LAHAV O., LI T.S., LUQUE E., MAIA M.A.G., MAKLER M., MARCH M., MARSHALL J., MARTINI P., MERRITT K.W., MILLER C., MIQUEL R., MOHR J., NEILSEN E., NORD B., OGANDO R., PEOPLES J., PETRAVICK D., PIERES A., PLAZAS A.A., QUEIROZ A., ROMER A.K., ROODMAN A., RYKOFF E.S., SAKO M., SANCHEZ E., SANTIAGO B., SCARPINE V., SCHUBNELL M., SEVILLA I., SMITH R.C., SOARES-SANTOS M., SOBREIRA F., SUCHYTA E., SWANSON M.E.C., TARLE G., THALER J., THOMAS D., TUCKER D., WALKER A.R., WECHSLER R.H., WESTER W., WILLIAMS P., YANNY B., ZUNTZ J. (The DES Collaboration)

Abstract (from CDS):

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 annihilating via the or τ+τ– channels.

Abstract Copyright: ∼

Journal keyword(s): dark matter - galaxies: dwarf - gamma rays: galaxies - Local Group

Simbad objects: 24

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Number of rows : 24
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
2 NAME Segue 2 G 02 19 16.0 +20 10 31     15.2     ~ 299 0
3 NAME Eri III G 02 22 45.480 -52 17 04.92           ~ 79 0
4 QSO B0252-549 Bla 02 53 29.1803201880 -54 41 51.437517216   17.65 19.3 16.79   ~ 141 1
5 NAME Hor I G 02 55 31.7 -54 07 08           ~ 169 0
6 PMN J0335-5406 Rad 03 35 06.6 -54 06 26           ~ 3 1
7 NAME Reticulum II G 03 35 42.1 -54 02 57           ~ 375 0
8 NAME Eridanus II G 03 44 21.1 -43 32 00           ~ 216 0
9 NAME Pic I G 04 43 47.4 -50 16 59           ~ 58 0
10 NAME UMa II Galaxy G 08 51 30.0 +63 07 48     13.3     ~ 410 0
11 NAME Segue 1 G 10 07 03.2 +16 04 25     15.3     ~ 517 1
12 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
13 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
14 NAME Leo IV LSB 11 32 57.0 -00 32 00     15.1     ~ 419 1
15 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
16 NAME CVn II dSph G 12 57 09.6 +34 19 12     16.1     ~ 287 2
17 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
18 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
19 NAME Hercules Dwarf Galaxy G 16 31 02.0 +12 47 30     14.0     ~ 379 1
20 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
21 NAME Indus I Cl* 21 08 49.970 -51 09 48.60           ~ 68 0
22 NAME Tuc II G 22 51 55.1 -58 34 08           ~ 192 0
23 NAME Phe II G 23 39 59.4 -54 24 22           ~ 107 0
24 NAME Local Group GrG ~ ~           ~ 9325 0

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