Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986mnras.219..871t&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 219, April 15, 1986, p. 871-881. Research supported by
Astronomy and Astrophysics
Astronomy
59
Bursts, Milky Way Galaxy, Neutron Stars, Radiant Flux Density, Spaceborne Astronomy, X Ray Sources, Black Holes (Astronomy), Exosat Satellite, Light Curve, Periodic Variations
Scientific paper
A sequence of eight X-ray flares was detected during an EXOSAT observation of the low-state Circinus X-1 (= BR Cir). The authors identify these flares with X-ray bursts from Cir X-1. The recurrence time, ratio of persistent flux to the time-averaged flux and indications of cooling during the bursts are all consistent with these bursts being type I, although the authors cannot rule out the possibility that the bursts are type II. Type I bursts would be strong evidence that Cir X-1 is a neutron star and not a black hole.
Fabian Andrea C.
Shafer Richard A.
Tennant Allyn F.
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