Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-25T15:42:40.848Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

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

References

Boller, Th., et al. 1993, A&A, 279, 53.Google Scholar
Boller, Th., Brandt, W.N., & Fink, H. 1996, A&A, 305, 53.Google Scholar
Hayashida, K., et al. 1995, ApJ, submitted.Google Scholar
Leighly, K.M., et al. 1996, ApJ, in press.Google Scholar
Murakami, S., et al. 1996, in preparationGoogle Scholar
Otani, C., Kii, T., & Miya, K. 1996, in MPE Report 263, 491.Google Scholar
Pounds, K.A., Done, C., & Osborne, J.P. 1995, MNRAS, 277, L5.Google Scholar
Walter, R., & Fink, H. 1993, A&A, 274, 105.Google Scholar