Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...233l.115h&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 233, Nov. 1, 1979, p. L115-L119. Research supported by Zonta Interna
Astronomy and Astrophysics
Astronomy
31
Optical Emission Spectroscopy, Stellar Spectrophotometry, X Ray Astronomy, X Ray Stars, Bursts, Histograms, Stellar Mass Accretion, Time Response
Scientific paper
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.
Cominsky Lynn
Gehrz Robert D.
Grasdalen Gary L.
Hackwell John A.
Lewin Walter H. G.
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