2017A&A...600A.107Y

Query : 2017A&A...600A.107Y

2017A&A...600A.107Y - Astronomy and Astrophysics, volume 600A107-107 (2017/4-1)

Diffuse γ-ray emission near the young massive cluster NGC 3603.

YANG R.-Z. and AHARONIAN F.

Abstract (from CDS):

We report the detailed analysis of Fermi Large Area Telescope's data towards the direction of the young massive star cluster NGC 3603. The emission shows a hard spectrum with a photon index of 2.3±0.1 from 1GeV to 250GeV. The spatial correlation with the ionised gas indicates a hadronic origin. The total cosmic ray (CR) protons energy budget is estimated to be of the order of 1050erg assuming the γ-rays are produced in the interaction of CRs with ambient gas. The environment and spectral features show significant similarity with the GeV emission seen from the Cygnus cocoon. The emission can be produced by a pulsar wind nebular or by the super bubble associated with the young star clusters. In the latter case, it further establishes that young star clusters may be a γ-ray source population and that they can potentially accelerate a significant fraction of the Galactic cosmic rays.

Abstract Copyright: © ESO, 2017

Journal keyword(s): gamma rays: ISM - galaxies: star clusters: individual: NGC 3603 - galaxies: star clusters: individual: NGC 3603

Simbad objects: 25

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Number of rows : 25
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 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
2 NAME 30 Dor C Superbubble Rad 05 35 50.8 -69 12 22           ~ 54 0
3 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
4 Cl Westerlund 2 OpC 10 23 58.1 -57 45 49           ~ 400 0
5 ICRF J104742.9-621714 QSO 10 47 42.95229991 -62 17 14.6339246   19.99       ~ 51 1
6 PSR J1055-6028 Psr 10 56 11.87 -60 27 12.7           ~ 48 1
7 NAME MSH 11-61A SNR 10 59 25.36 -61 18 42.6           ~ 187 0
8 PSR J1105-6107 Psr 11 05 26.1400 -61 07 48.940           ~ 129 0
9 PSR J1111-6039 Psr 11 11 48.62 -60 39 26.2           ~ 29 0
10 SNR G291.0-00.1 SNR 11 11 54 -60 38.0           ~ 104 0
11 3FGL J1112.0-6135 gam 11 12 04 -61 35.0           ~ 7 0
12 2FHL J1112.1-6101 gam 11 12 09.6 -61 01 12           ~ 1 0
13 PSR J1112-6103 Psr 11 12 14.81 -61 03 31.1           ~ 77 0
14 NGC 3603 OpC 11 14 57.9 -61 14 32           ~ 1136 1
15 PSR J1119-6127 Psr 11 19 14.30 -61 27 49.5           ~ 439 1
16 SNR G292.2-00.5 SNR 11 19.3 -61 28           ~ 98 1
17 3FGL J1123.2-6415 Bla 11 23 19.41524 -64 17 36.1959           ~ 35 3
18 PSR J1124-5916 Psr 11 24 37.6 -59 16 20           ~ 178 1
19 PSR J1125-58 Psr 11 25 44.352943 -58 25 16.85965           ~ 55 1
20 PSR J1125-6014 Psr 11 25 55.243299 -60 14 06.80942           ~ 61 0
21 PSR J1135-6055 Psr 11 35 08.428 -60 55 36.50           ~ 34 1
22 Cl Westerlund 1 OpC 16 47 02.4 -45 51 07           ~ 655 1
23 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 962 1
24 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
25 SNR G291.1-00.1 SNR ~ ~           ~ 2 0

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