PreprintCC BY 4.0arXiv
The thermal emission for knot A of radio galaxy M87 by Chandra
Abstract
The jet may compress an interstellar medium and soft X ray outside the jet may be absorbed by a compressed interstellar medium and thermal emission heated by a shock is expected inside the jet. Thermal emission was found for HST-1 and knot A of M87 in X ray energy spectra analysis by Chandra (Osone, 2017). The X ray image of the surrounding of the jet of M87 was studied by Chandra (Osone 2024). I find a soft X ray dip in a south region outside knot A. Therefore, by taking only a north region outside knot A as a background, where there is no soft X ray dip, I analyze X ray energy spectra for knot A by Chandra and confirm thermal emission with a high significance.
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BibTeX
@misc{osone2026thermal,
title = {{The thermal emission for knot A of radio galaxy M87 by Chandra}},
author = {S. Osone},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.01083},
eprint = {2609.01083},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.01083},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - The thermal emission for knot A of radio galaxy M87 by Chandra
AU - S. Osone
PY - 2026
DA - 2026/09/01
PB - arXiv
DO - 10.48550/arxiv.2609.01083
UR - https://arxiv.org/abs/2609.01083
AB - The jet may compress an interstellar medium and soft X ray outside the jet may be absorbed by a compressed interstellar medium and thermal emission heated by a shock is expected inside the jet. Thermal emission was found for HST-1 and knot A of M87 in X ray energy spectra analysis by Chandra (Osone, 2017). The X ray image of the surrounding of the jet of M87 was studied by Chandra (Osone 2024). I find a soft X ray dip in a south region outside knot A. Therefore, by taking only a north region outside knot A as a background, where there is no soft X ray dip, I analyze X ray energy spectra for knot A by Chandra and confirm thermal emission with a high significance.
ER -