EXOSAT observations of the X-ray burst source 4U 1608-52

Details EXOSAT observations of the X-ray burst source 4U 1608-52 EXOSAT observations of the X-ray burst source 4U 1608-52

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...208..146p&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 208, no. 1-2, Jan. 1989, p. 146-152.

Astronomy and Astrophysics

Astrophysics

39

Exosat Satellite, Gamma Ray Bursts, Spectrum Analysis, Stellar Spectra, X Ray Binaries, Black Body Radiation, Brightness Temperature, Neutron Stars, Power Spectra, Stellar Models

Scientific paper

The results of an analysis of two Exosat observations (July 1984, May 1986) of the highly variable X-ray burst source 4U 1608-52 are presented. During both observations the persistent X-ray flux was low (quiescence), and the persistent X-ray spectrum could be well fitted with a power-law model, with approximately the same index, but a somewhat different low-energy cut off. During both observations one type 1 burst was seen. It is shown that the relation between color temperature and effective temperature differs markedly from simple relations derived from theoretical models. A dip in the bolometric flux occurred near the peak of the 1986 burst. Possible models for this dip are discussed.

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