2018A&A...619A.109S


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.08CET14:07:11

2018A&A...619A.109S - Astronomy and Astrophysics, volume 619A, 109-109 (2018/11-1)

Unidentified γ-ray emission towards the SNR Kes 41 revisited.

SUPAN L., CASTELLETTI G., SUPANITSKY A.D. and BURTON M.G.

Abstract (from CDS):

Kes 41 is one of the Galactic supernova remnants (SNRs) that are proposed to be physically linked to γ-ray emission at GeV energies. The nature of the γ-ray photons has been explained, but inconclusively, as hadronic collisions of particles accelerated at the SNR blast wave with target protons in an adjacent molecular clump. We performed an analysis of Fermi-Large Area Telescope (LAT) data of about nine years to assess the origin of the γ-ray emission. To investigate this matter, we also used spectral modelling constraints from the physical properties of the interstellar medium towards the γ-ray emitting region along with a revised radio continuum spectrum of Kes 41 (α=-0.54±0.10, S∝να). We demonstrate that the γ-ray fluxes in the GeV range can be explained through bremsstrahlung emission from electrons interacting with the surrounding medium. We also considered a model in which the emission is produced by pion decay after hadronic collisions, and confirm that this mechanism cannot be excluded.

Abstract Copyright: © ESO 2018

Journal keyword(s): ISM: supernova remnants - ISM: individual objects: Kes 41 - gamma rays: ISM

Simbad objects: 11

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Number of rows : 11

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME E 1 Region reg 01 26 +45.6           ~ 10 0
2 MMB G337.686+00.137 Mas 16 37 35.42 -46 53 47.6           ~ 12 0
3 MSX5C G337.7090+00.0930 HII 16 37 52.3 -46 54 34           ~ 5 0
4 GAL 337.67-00.05 HII 16 38 14 -47 04.9           ~ 10 0
5 GAL 337.70-00.05 HII 16 38 32 -47 00.5           ~ 13 0
6 3FGL J1838.6-4654 gam 16 38 36 -46 54.1           ~ 1 0
7 [JD2012] G337.667-00.167 HII 16 38 51 -47 06.9           ~ 6 0
8 SNR G337.8-00.1 SNR 16 39.0 -46 59           ~ 68 0
9 [JD2012] G338.011+00.022 HII 16 39 22 -46 43.9           ~ 3 0
10 [KC97c] G338.0-00.1 HII 16 39 54.3 -46 51 10           ~ 8 0
11 GAL 338.13-00.17 HII 16 40 43 -46 47.3           ~ 7 0

    Equat.    Gal    SGal    Ecl

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2021.03.08-14:07:11

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