A Spectroscopic Study of the Seyfert Galaxy MCG-2-58-22

Details A Spectroscopic Study of the Seyfert Galaxy MCG-2-58-22 A Spectroscopic Study of the Seyfert Galaxy MCG-2-58-22

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jkas...38..339c&link_type=abstract

Journal of the Korean Astronomical Society, vol. 38, no. 3, pp. 339-344

Astronomy and Astrophysics

Astronomy

Galaxies: Individual(Mcg-2-58-22), Galaxies: Nuclei, Galaxies: Seyfert, X-Rays: Galaxies

Scientific paper

We present analysis results of the energy spectra of MCG-2-58-22 associated with occasional flares which appear in a long-term X-ray light curve. We measure an intrinsic power-law slope of this object to be Γ = 1.74 ± 0.02 in the energy range of ˜ 1-5 keV and find that this slope is little affected by flares. We confirm that there exists a broad excess emission above 5 keV to the power-law continuum. The excess emission is less variable compared with a flux variation of flare and tends to be relatively weak during flares. A soft X-ray spectrum is also found to change, implying the presence of a variable soft component. We discuss the implications of these spectral variations.

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