SIMBAD references

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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2021.06.15-19:29:10

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