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2.13. Optical and X-ray variability in NGC 4395

Published online by Cambridge University Press:  25 May 2016

P. Lira  and
A. Lawrence
P. Lira
Affiliation:
Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
A. Lawrence
Affiliation:
Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK

Extract

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The spectrum of the dwarf Seyfert 1 nucleus in NGC 4395 was first reported about a decade ago (Filippenko & Sargent 1989), showing high ionization narrow emission lines and broad permitted lines. The later detection of radio and X-ray compact nuclear sources and of a featureless UV continuum gave support to the idea that NGC 4395 is a genuine low luminosity AGN (Sramek 1992; Filippenko, Ho & Sargent 1993). However, it has been claimed that, unlike classic Seyferts, NGC 4395 does not vary at all (Shields & Filippenko 1992).

Type
Part I. Stellar Cluster, Star Formation
Information
Symposium - International Astronomical Union , Volume 184: The Central Regions of the Galaxy and Galaxies , 1998 , pp. 83 - 84
Copyright
Copyright © Kluwer 1998 

References

Filippenko, A.V., 1992, in Relationships Between Active Galactic Nuclei and Starbust Galaxies, p. 253, A.S.P. Conf. Ser., Vol 31, Filippenko, A.V. (ed.).Google Scholar
Filippenko, A.V. & Sargent, W.L., 1989, Ap. J. (Letters) , 342, L11.Google Scholar
Filippenko, A.V., Ho, L.C. & Sargent, W.L., 1993, Ap. J. (Letters), 410, L75.Google Scholar
Shields, J.C. & Filippenko, A.V., 1992, in Relationships Between Active Galactic Nuclei and Starbust Galaxies, p. 267, A.S.P. Conf. Ser., Vol 31, Filippenko, A.V. (ed.).Google Scholar
Sramek, R., 1992, in Relationships Between Active Galactic Nuclei and Starbust Galaxies, p. 273, A.S.P. Conf. Ser., Vol 31, Filippenko, A.V. (ed.).Google Scholar