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Astrophysics > High Energy Astrophysical Phenomena

arXiv:1706.00683 (astro-ph)
[Submitted on 1 Jun 2017 (v1), last revised 25 Oct 2018 (this version, v2)]

Title:Study of an interaction between the jet and an interstellar medium of M87 with a spectral analysis by using Chandra

Authors:S. Osone
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Abstract:Both a thermal component and a non thermal component as an interaction between the jet and an interstellar medium are studied with an exposure time of 800 ks of Chandra. It is confirmed that an X-ray energy spectra for the nucleus, the knot HST-1 and the knot D is well described with a power law as synchrotron emission. It is found that a power law model is rejected statistically for the knot A and an X-ray energy spectra is well described with a combination model of a power law and a thermal component. There is a possibility that gas in a jet is heated by a shock as interaction between the jet and an interstellar medium and it is observed as thermal emission. The flux of a non thermal bremsstrahlung from the jet as an interaction between accelerated electrons and an interstellar medium is calculated from an X-ray result with an effect of a break in an index and it is suggested that there is some contribution from the knot HST-1 to the observed flux with Fermi. This scenario matches with a non-flux variability in a GeV energy range.
Comments: 26 pages, 3 figures. arXiv admin note: text overlap with arXiv:1408.3975:The exposure time is twice as long as original paper and the calculation of flux of non thermal bremsstrahlung is modified with an effct of a break in an index
Subjects: High Energy Astrophysical Phenomena (astro-ph.HE)
Cite as: arXiv:1706.00683 [astro-ph.HE]
  (or arXiv:1706.00683v2 [astro-ph.HE] for this version)
  https://doi.org/10.48550/arXiv.1706.00683

Submission history

From: Satoko Osone [view email]
[v1] Thu, 1 Jun 2017 04:14:24 UTC (866 KB)
[v2] Thu, 25 Oct 2018 10:53:14 UTC (911 KB)
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