Observations of an X-ray nova in the Musca constellation by the Watch instrument

Details Observations of an X-ray nova in the Musca constellation by the Watch instrument Observations of an X-ray nova in the Musca constellation by the Watch instrument

Jan 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992sval...18....1l&link_type=abstract

Soviet Astronomy Letters, Vol. 18, p. 1; Pis'ma v Astronomicheskii Zhurnal (ISSN 0320-0108), vol. 18, no. 1, Jan. 1992, p. 3-10.

Astronomy and Astrophysics

Astronomy

3

Light Curve, Novae, X Ray Sources, X Ray Stars, Black Holes (Astronomy), Periodic Variations, X Ray Astronomy, X Ray Spectroscopy

Scientific paper

A new bright transient X-ray source was discovered by the Watch instrument on board the Granat observatory on January 8, 1981. The maximum flux from the newly discovered source was 2 Crab units in the 8-20 keV spectral band. During January 16-21 Watch detected the dip in the light curve of the X-ray nova. On January 16, 1991 the flux decreased to half that of the Crab nebula. Five days later the source became brighter again. Light curves in two energy bands are presented.

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