Study of an interaction between the jet and an interstellar medium of M87 with a spectral analysis by using Chandra
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.
Keywords
Cite
@article{arxiv.1706.00683,
title = {Study of an interaction between the jet and an interstellar medium of M87 with a spectral analysis by using Chandra},
author = {S. Osone},
journal= {arXiv preprint arXiv:1706.00683},
year = {2018}
}
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