2015ApJ...812...15B

Query : 2015ApJ...812...15B

2015ApJ...812...15B - Astrophys. J., 812, 15 (2015/October-2)

Disrupted globular clusters can explain the Galactic Center gamma-ray excess.

BRANDT T.D. and KOCSIS B.

Abstract (from CDS):

The Fermi satellite has recently detected gamma-ray emission from the central regions of our Galaxy. This may be evidence for dark matter particles, a major component of the standard cosmological model, annihilating to produce high-energy photons. We show that the observed signal may instead be generated by millisecond pulsars that formed in dense star clusters in the Galactic halo. Most of these clusters were ultimately disrupted by evaporation and gravitational tides, contributing to a spherical bulge of stars and stellar remnants. The gamma-ray amplitude, angular distribution, and spectral signatures of this source may be predicted without free parameters, and are in remarkable agreement with the observations. These gamma-rays are from fossil remains of dispersed clusters, telling the history of the Galactic bulge.

Abstract Copyright: ∼

Journal keyword(s): dark matter - Galaxy: bulge - Galaxy: center - gamma rays: diffuse background - globular clusters: general - pulsars: general

Simbad objects: 38

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Number of rows : 38
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 PSR J0218+42 Psr 02 18 06.3604 +42 32 17.365           ~ 365 2
3 PSR J0308+7442 Psr 03 07 55.8956909 +74 43 13.432617           ~ 30 1
4 PSR J0533+6759 Psr 05 33 55.1422119 +67 59 17.482910           ~ 26 0
5 PSR J0605+3757 Psr 06 05 05.5444336 +37 57 35.996704           ~ 42 0
6 PSR J0614-3329 Psr 06 14 10.3479 -33 29 54.116           ~ 134 1
7 NAME GUM Nebula ISM 07 43 -42.1           ~ 454 1
8 PSR J1137+7528 Psr 11 37 02.0581055 +75 28 02.308960           ~ 16 0
9 PSR J1142+01 Psr 11 42 50.1342774 +01 19 35.400210           ~ 29 1
10 PSR J1301+0833 Psr 13 01 38.26 +08 33 57.5           ~ 56 0
11 PSR J1302-32 Psr 13 02 25.5358887 -32 58 36.833496           ~ 35 0
12 PSR J1311-3430 Psr 13 11 45.7292612136 -34 30 30.294149760   21.0   18.8   ~ 181 1
13 PSR J1312+00 Psr 13 12 46.6406250 +00 51 00.071969           ~ 41 0
14 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
15 PSR J1543-5149 Psr 15 43 44.145289 -51 49 54.71350           ~ 41 1
16 PSR J1544+4936 Psr 15 44.0 +49 36           ~ 1 0
17 PSR J1630+3734 Psr 16 30 36.4672852 +37 34 42.101440           ~ 48 0
18 PSR J1640+2224 Psr 16 40 16.744850 +22 24 08.84119           ~ 210 0
19 M 62 GlC 17 01 12.60 -30 06 44.5           ~ 668 0
20 PSR J1732-5049 Psr 17 32 47.766068 -50 49 00.31465           ~ 87 0
21 NGC 6388 GlC 17 36 17.461 -44 44 08.34           ~ 988 1
22 PSR J1745+1017 Psr 17 45 33.8371 +10 17 52.523           ~ 70 0
23 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
24 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
25 NAME Sgr A East SNR 17 45 41 -29 00.8           ~ 523 2
26 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
27 NGC 6440 GlC 17 48 52.67 -20 21 34.5           ~ 592 0
28 NGC 6541 GlC 18 08 02.36 -43 42 53.6           ~ 409 0
29 PSR J1811-2405 Psr 18 11 19.854352 -24 05 18.42800           ~ 56 1
30 PSR J1816+4510 Psr 18 16 35.9342957160 +45 10 33.917516328           ~ 126 0
31 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
32 NGC 6652 GlC 18 35 45.63 -32 59 26.6           ~ 474 0
33 PSR J1843-1113 Psr 18 43 41.260405 -11 13 31.10310           ~ 86 0
34 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
35 PSR J2129-04 Psr 21 29 45.0469239408 -04 29 06.973600236     16.68     ~ 100 0
36 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
37 PSR J2256-1024 Psr 22 56 56.390 -10 24 34.37           ~ 88 0
38 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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