2019ApJ...870...35E

Query : 2019ApJ...870...35E

2019ApJ...870...35E - Astrophys. J., 870, 35-35 (2019/January-1)

2FHL J0826.1-4500 discovery of a possible shock-cloud interaction on the western edge of the Vela supernova remnant.

EAGLE J., MARCHESI S., CASTRO D., AJELLO M., DUVIDOVICH L. and TIBALDO L.

Abstract (from CDS):

We report on the investigation of a very high-energy, Galactic γ-ray source recently discovered at >50 GeV using the Large Area Telescope on board Fermi. This object, 2FHL J0826.1-4500, displays one of the hardest >50 GeV spectra (photon index Γγ ∼ 1.6) in the 2FHL catalog, and a follow-up observation with XMM-Newton has uncovered diffuse, soft thermal emission at the position of the γ-ray source. A detailed analysis of the available multi-wavelength data shows that this source is located on the western edge of the Vela supernova remnant (SNR): the observations and the modeling of the spectral energy distribution support a scenario where this γ-ray source is the byproduct of the interaction between the SNR shock and a neutral hydrogen cloud. If confirmed, this shock-cloud interaction would make 2FHL J0826.1-4500 a promising candidate for efficient particle acceleration.

Abstract Copyright: © 2019. The American Astronomical Society. All rights reserved.

Journal keyword(s): cosmic rays - ISM: supernova remnants - radiation mechanisms: thermal - shock waves

Simbad objects: 15

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Number of rows : 15
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 IC 443 SNR 06 17 00.0000000 +22 34 11.998901           ~ 1314 1
2 NAME Pup A SNR 08 24 07 -42 59.8           ~ 636 1
3 2FHL J0826.1-4500 gam 08 26 07.0 -45 00 02           ~ 4 0
4 NAME Vela X Psr 08 33 08.880 -45 11 24.36           ~ 302 1
5 NAME Vela SNR 08 34.0 -45 50           ~ 1331 2
6 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
7 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 507 2
8 NAME Lupus SN SNR 15 02 22.1 -42 05 49           ~ 1407 1
9 SNR G347.3-00.5 SNR 17 12 27 -39 41.2     12.27     ~ 761 1
10 SNR G348.5+00.1 SNR 17 14 31.780 -38 28 34.50           ~ 233 3
11 SNR G349.7+00.2 SNR 17 18 10.160 -37 18 53.80           ~ 196 0
12 SNR G006.4-00.1 SNR 18 00 31.2011719 -23 25 48.001099           ~ 782 1
13 SNR G034.6-00.5 SNR 18 56 10.650 +01 13 21.30           ~ 1034 2
14 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1
15 NAME Vela Field reg ~ ~           ~ 200 0

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