IUE observations of the X-ray burst source 4U/MXB 1735-44

Details IUE observations of the X-ray burst source 4U/MXB 1735-44 IUE observations of the X-ray burst source 4U/MXB 1735-44

Mar 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...254l...1h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 254, Mar. 1, 1982, p. L1-L5. Research supported by the Nederlandse O

Astronomy and Astrophysics

Astrophysics

15

Iue, Ultraviolet Spectra, X Ray Sources, Bursts, Spectral Energy Distribution

Scientific paper

The ultraviolet (1250-1950 A) energy distribution of the X-ray burst source 4U/MXB 1735-44 has been observed with the International Ultraviolet Explorer. The source was detected with an average flux of 1.1 x 10 to the -15th ergs/sq cm per sec per A. The similarity of the optical energy distribution of this source to that of Sco X-1 extends into the far-ultraviolet. Assuming that the optical and ultraviolet emission of MXB 1735-44 is due to reprocessing of X-rays in an accretion disk, the ratio of X-ray to bolometric (optical + ultraviolet) flux has been used to make an estimate of the thickness of the disk. For an assumed X-ray albedo of 0.5, it is found that the disk extends to less than approximately 6 deg from the orbital plane.

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