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Title:
The detection of an optical burst coincident with an X-ray burst from MXB 1837 + 05 /Ser X-1/
Authors:
Hackwell, J. A.; Grasdalen, G. L.; Gehrz, R. D.; Cominsky, L.; Lewin, W. H. G.; van Paradijs, J.
Affiliation:
AA(Wyoming, University, Laramie, Wyo.), AB(Wyoming, University, Laramie, Wyo.), AC(Wyoming, University, Laramie, Wyo.), AD(MIT, Cambridge, Mass.), AE(MIT, Cambridge, Mass.)
Publication:
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 233, Nov. 1, 1979, p. L115-L119. Research supported by Zonta International and NSF; (ApJL Homepage)
Publication Date:
11/1979
Category:
Astronomy
Origin:
STI
NASA/STI Keywords:
OPTICAL EMISSION SPECTROSCOPY, STELLAR SPECTROPHOTOMETRY, X RAY ASTRONOMY, X RAY STARS, BURSTS, HISTOGRAMS, STELLAR MASS ACCRETION, TIME RESPONSE
Comment:
A&AA ID. AAA026.142.055
DOI:
10.1086/183088
Bibliographic Code:
1979ApJ...233L.115H

Abstract

The detection of a simultaneous optical and X-ray burst from MXB 1837 + 05 (4U 1837 + 04 = Ser X-1) is reported. A similar detection was made earlier from MXB 1735-44. These are the only two burst sources that have been optically observed (simultaneous with X-ray observations) at a high level of sensitivity. Therefore, it may well be that optical bursts commonly accompany X-ray bursts. The relative timing and flux ratio of the optical and X-ray bursts imply that the optical radiation is probably reemission from X-ray-heated matter within 1-2 light seconds of the X-ray source and no more than a few light seconds in extent. This matter may be in an accretion disk around the X-ray source or possibly in the atmosphere of a dwarf companion.

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