Observations of X-ray sources in the galactic center region and the constellation Cygnus

Details Observations of X-ray sources in the galactic center region and the constellation Cygnus Observations of X-ray sources in the galactic center region and the constellation Cygnus

Mar 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977kosis..15..321n&link_type=abstract

Kosmicheskie Issledovaniia, vol. 15, Mar.-Apr. 1977, p. 321-323. In Russian.

Astronomy and Astrophysics

Astronomy

1

Cygnus Constellation, Galactic Nuclei, Milky Way Galaxy, Salyut Space Station, Spaceborne Astronomy, X Ray Sources, Astronomical Catalogs, Globular Clusters, Satellite-Borne Instruments, Sky Surveys (Astronomy)

Scientific paper

Results are reported for a partial sky survey conducted with the Filin instrument aboard the Salyut 4 station. Sources observed include Cyg X-2, 3U 1820-30 (identified with the globular cluster NGC 6624), 3U 1744-26, 3U 1758-25, and 3U 1811-17. Determinations of count rates and spectral characteristics for each source show that Cyg X-2 had a count rate of only 100 Uhuru counts/sec at the time of observation and that 3U 1811-17 exhibited an unusually hard spectrum combined with a low X-ray flux.

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