2015MNRAS.448.3215Z

Query : 2015MNRAS.448.3215Z

2015MNRAS.448.3215Z - Mon. Not. R. Astron. Soc., 448, 3215-3220 (2015/April-3)

Gamma-ray emission from globular clusters 2MS-GC01, IC 1257, FSR 1735, NGC 5904 and 6656.

ZHOU J.N., ZHANG P.F., HUANG X.Y., LI X., LIANG Y.F., FU L., YAN J.Z. and LIU Q.Z.

Abstract (from CDS):

Globular clusters (GCs) are the oldest stellar systems in the Galaxy, in which millisecond pulsars are widely believed to be the only steady γ-ray emitters. So far, nine γ-ray GCs have been identified and a few candidates, such as 2MS-GC01 and IC 1257, have been suggested. In this work, after analysing the publicly available Fermi Large Area Telescope data, we confirm the significant γ-ray emission from 2MS-GC01 and IC 1257 and report the discovery of γ-ray emission from NGC 5904 and 6656 within their tidal radii. Also, strong evidence of significant γ-ray emission is found from FSR 1735. From the observed γ-ray luminosities, we estimate the numbers of millisecond pulsars that are expected to be present in these GCs.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): gamma-rays: general - globular clusters: individual: NGC 5904 - globular clusters: individual: NGC 6656 - globular clusters: individual: FSR 1735 - globular clusters: individual: 2MS-GC01 - globular clusters: individual: IC 1257

Simbad objects: 14

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Number of rows : 14
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 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
3 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
4 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 780 0
5 NAME 2MASS-GC03 GlC 16 52 10.602 -47 03 29.00           ~ 68 0
6 M 62 GlC 17 01 12.60 -30 06 44.5           ~ 668 0
7 IC 1257 Bz? 17 27 06.00 -07 05 00.0           ~ 110 0
8 NGC 6388 GlC 17 36 17.461 -44 44 08.34           ~ 988 1
9 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
10 NGC 6440 GlC 17 48 52.67 -20 21 34.5           ~ 592 0
11 [HJK2000] GC01 GlC 18 08 21.8 -19 49 47           ~ 69 0
12 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
13 NGC 6652 GlC 18 35 45.63 -32 59 26.6           ~ 474 0
14 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0

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