Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993astl...19..109s&link_type=abstract
Astronomy Letters, Vol. 19, p. 109-113; Pis'ma v Astronomicheskij Zhurnal (ISSN 0320-0108), vol. 19, no. 4, p. 295-304. In Russ
Astronomy and Astrophysics
Astronomy
Galactic Nuclei, Light Curve, Periodic Variations, Satellite Observation, X Ray Sources, Orbital Mechanics, Prognoz Satellites
Scientific paper
New periodic processes with periods of 152, 98, 67, 13, 9.4, 3.4, and 1.96 hr were discovered during the long (over two months) virtually continuous observations of the Galactic center during the X-ray experiment on board the Prognoz-9 satellite. Mean light curves corresponding to these periods are obtained in the energy ranges 10-50, 25-50, and 50-100 keV. The forms of these curves are rather varied and can be caused by both the orbital motions of the components of the binary systems and their procession.
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