EXOSAT results on the X-ray burster 2S1254-690

Details EXOSAT results on the X-ray burster 2S1254-690 EXOSAT results on the X-ray burster 2S1254-690

Feb 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985ssrv...40..275c&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

Light Curve, Spaceborne Astronomy, Spectral Energy Distribution, X Ray Sources, Bursts, Exosat Satellite, Radiant Flux Density, Spectrum Analysis, Stellar Spectrophotometry

Scientific paper

Exosat observations of 2S1254-690 in August 1984 have confirmed the presence of periodic dips in the X-ray intensity. These dips occurred with a period of 3.9 hours and lasted for about 50 minutes. During individual dips, the observed X-ray flux oscillated several times between the quiescent level and an undetectable level on time scales varying from a few seconds to approximately 5 minutes. In addition, a second type-one burst has been observed with characteristics which are very similar to those observed earlier. In this paper, the results of a 20-hour Exosat observation made in August 6th to 7th 1984, are reported and some properties of the dips and of the burst are discussed.

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