Disk evolution of the M87's nucleus observed in 2008
Abstract
We report the discovery of year-scale X-ray variation in the nuclear region of the M87 by reanalyze the eight Chandra observations from 2007 to 2008. The X-ray spectra are fitted and decomposed into disk and flaring components. This year-scale X-ray variability can be explained quite well by a simple clumpy accretion model. We conclude that the central super-massive black hole of M87 was accreting a cloud of ∼ 0.5 M⊙ at that time.
- Publication:
-
Research in Astronomy and Astrophysics
- Pub Date:
- July 2020
- DOI:
- 10.1088/1674-4527/20/7/101
- arXiv:
- arXiv:2002.09122
- Bibcode:
- 2020RAA....20..101X
- Keywords:
-
- Astrophysics - High Energy Astrophysical Phenomena;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 14 pages, 6 figures, accepted by Research in Astronomy and Astrophysics