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ASCA Observations of Narrow-Line Seyfert 1 Galaxies

Published online by Cambridge University Press:  12 April 2016

K. Hayashida
K. Hayashida*
Affiliation:
Department of Earth & Space Science, Osaka University, 1-1 Machikaneyama-cho, Toyonaka, Osaka, Japan

Abstract

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ASCA observations of four narrow-line Seyfert 1 galaxies are presented. Among the four sources, two show X-ray spectra consisting of soft and hard components. Rapid X-ray variability is observed in all four sources. We estimate the central black-hole mass of these sources and find indications that the apparent luminosities exceed the Eddington limit under some assumptions.

Type
I. X-Rays and the Nuclear Regions of Active Galaxies
Information
International Astronomical Union Colloquium , Volume 159: Emission Lines in Active Galaxies: New Methods and Techniques , 1997 , pp. 40 - 43
Copyright
Copyright © Astronomical Society of the Pacific 1997

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