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X-Ray Nova Flares

Published online by Cambridge University Press:  14 August 2015

P. R. Amnuel  and
O. H. Guseinov
P. R. Amnuel
Affiliation:
Shemakha Astrophysical Observatory of the Academy of Sciences, Azerb. S.S.R., U.S.S.R.
O. H. Guseinov
Affiliation:
Shemakha Astrophysical Observatory of the Academy of Sciences, Azerb. S.S.R., U.S.S.R.

Abstract

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In order to find out the physical nature of galactic X-ray sources, data on the variability of 24 sources during 1964–1971 have been investigated. The fluxes of 9 sources are found to be increasing to the maximum value (for several months) and then slowly decreasing (for 3 years). These 9 sources have been related by us to the class of X-ray Novae. The X-ray Nova synthetic light curve has been drawn from data of the fluxes of 9 discovered Novae. Assumptions have been made on the physical nature of the X-ray Novae. Between the flares the X-ray Novae may be weak X-ray sources with a luminosity of about 1034 erg s−1. During the flares the luminosity increases to about 1038 erg s−1. The number of X-ray sources in the Galaxy is about 103–104. The object of the optical identification may be a dwarf star of no earlier spectral class than F.

Type
Part 9 / Variable X-Ray Sources
Information
Symposium - International Astronomical Union , Volume 67: Variable Stars and Stellar Evolution , 1975 , pp. 501 - 508
Copyright
Copyright © Reidel 1975 

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