Observations of Spectral and Time Variabilities from MCG-2-58-22

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dc.creatorChoi, Chul-Sung
dc.creatorDotani, Tadayasu
dc.creatorYi, Insu
dc.creatorKim, ChulHee
dc.date2000-07-14
dc.date.accessioned2026-07-07T01:54:24Z
dc.date.available2026-07-07T01:54:24Z
dc.descriptionWe present results from analysis of the X-ray archive data of MCG-2-58-22, acquired with ROSAT from 1991 to 1993 and with ASCA from 1993 to 1997. By analyzing light curves, we find that MCG-2-58-22 shows a clear time variability in X-ray flux. The time scales of the variations range widely from about 1000 s to more than years. Among the variations, a flare-like event overlaid on the gradual flux decrease from 1979 to 1993 is detected. We also find clear time variability of the spectra in the energy range of 0.1 - 2.0 keV. However, the flux variation does not influences on their spectra in the energy range of 2 - 10 keV. The implications of these observational results are discussed in terms of a supermassive black hole model and accretion flow dynamics near the central black hole.
dc.description27 pages and 9 figures, submitted to ApJ
dc.identifierhttps://arxiv.org/abs/astro-ph/0007195
dc.identifierhttp://arxiv.org/abs/astro-ph/0007195
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/1331
dc.subjectAstrophysics
dc.titleObservations of Spectral and Time Variabilities from MCG-2-58-22
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