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Solving the Mystery of the Periodicity in the Seyfert Galaxy NGC 6814

Published online by Cambridge University Press:  19 July 2016

Greg M. Madejski ,
Chris Done ,
T. Jane Turner ,
Richard F. Mushotzky ,
Peter Serlemitsos ,
Fabrizio Fiore ,
Marek Sikora  and
Mitchell C. Begelman
Greg M. Madejski
Affiliation:
1Lab for High Energy Astrophysics, NASA/Goddard, Greenbelt, MD, USA
Chris Done
Affiliation:
1Lab for High Energy Astrophysics, NASA/Goddard, Greenbelt, MD, USA 3Center for Astrophysics, Cambridge, MA, USA
T. Jane Turner
Affiliation:
1Lab for High Energy Astrophysics, NASA/Goddard, Greenbelt, MD, USA
Richard F. Mushotzky
Affiliation:
1Lab for High Energy Astrophysics, NASA/Goddard, Greenbelt, MD, USA
Peter Serlemitsos
Affiliation:
1Lab for High Energy Astrophysics, NASA/Goddard, Greenbelt, MD, USA
Fabrizio Fiore
Affiliation:
3Center for Astrophysics, Cambridge, MA, USA
Marek Sikora
Affiliation:
4Copernicus Astronomical Center, Warsaw, Poland 5JILA/University of Colorado, Boulder, CO, USA
Mitchell C. Begelman
Affiliation:
5JILA/University of Colorado, Boulder, CO, USA

Abstract

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The reports of periodic X–ray emission from the Seyfert galaxy NGC 6814 have motivated a number of exotic models for the active nucleus. Our ROSAT observation shows that while the nucleus of NGC 6814 is indeed an X–ray emitter, the periodicity is due to another source, most likely a Galactic accreting binary system, ∼ 37 arc min away.

Type
Variability
Information
Symposium - International Astronomical Union , Volume 159: Multi-Wavelength Continuum Emission of AGN , 1994 , pp. 127 - 130
Copyright
Copyright © Kluwer 1994 

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