X-ray variability of the quasar 3C273

White, Glenn J. and Ricketts, Martin J. (1979). X-ray variability of the quasar 3C273. Monthly Notices of the Royal Astronomical Society, 187 pp. 757–759.

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URL:	http://adsabs.harvard.edu/abs/1979MNRAS.187..757W
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Abstract

Observations of the quasar 3C273 made during 1975-77 have shown that the X-ray flux varied on a time scale of several months. No similar variation was present in radio and optical data taken at similar times. If this variation results from luminosity variations of a central compact object, then an upper limit of ≤4 x 10¹⁷cm can be set on its dimensions.

Item Type:	Journal Article
Copyright Holders:	1979 Royal Astronomical Society
ISSN:	0035-8711
Keywords:	light curve; quasars; statistical analysis; x-ray astronomy; Compton effect; luminous intensity; stellar luminosity
Academic Unit/Department:	Science > Physical Sciences
Interdisciplinary Research Centre:	Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID:	33275
Depositing User:	Glenn White
Date Deposited:	28 Mar 2012 13:30
Last Modified:	29 Mar 2012 16:04
URI:	http://oro.open.ac.uk/id/eprint/33275

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