Coordinated EXOSAT and optical observations of the X-ray burster 4U1735-44

Details Coordinated EXOSAT and optical observations of the X-ray burster 4U1735-44 Coordinated EXOSAT and optical observations of the X-ray burster 4U1735-44

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ssrv...40..281s&link_type=abstract

(ESA, ESLAB Symposium on X-Ray Astronomy in the EXOSAT Era, 18th, The Hague, Netherlands, Nov. 5-9, 1984) Space Science Reviews

Astronomy and Astrophysics

Astronomy

Radiant Flux Density, Spaceborne Astronomy, Spectral Energy Distribution, Visible Spectrum, X Ray Sources, Bursts, Stellar Coronas, Stellar Mass, Stellar Spectrophotometry, Stellar Winds

Scientific paper

The first results of an Exosat observation of the low-mass X-ray burster 4U1735-44 are presented. The ME data show low-amplitude variations in the persistent flux including two 5 percent dips separated by approximately 4 hours. The structure of the single observed burst is briefly described. Five hours of simultaneous B-band photometry were obtained at SAAO with 12-minute time resolution; a strong anticorrelation is shown to exist between the X-ray and optical flux, with a high level of significance. A model for this behavior is suggested, based on reprocessing of the X-ray flux in a corona or stellar wind.

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