Highlights from Exosat's early orbits

Details Highlights from Exosat's early orbits Highlights from Exosat's early orbits

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983esabu..36...21p&link_type=abstract

ESA Bulletin (ISSN 0376-4265), no. 36, Nov. 1983, p. 21-23.

Astronomy and Astrophysics

Astronomy

Exosat Satellite, Postlaunch Reports, X Ray Astronomy, Active Galactic Nuclei, Calibrating, Celestial Bodies, X Ray Sources

Scientific paper

Early results from operation of the European X ray observatory (Exosat) are reported. Observations have been made in the 2-30 kev range of the Cassiopeia-A SNR, providing data on the variation of the gas temperature and mass throughout the remnant. Analyses are under way on the interaction in the blast wave with the surrounding interstellar medium and the local inhomogeneities. Several new X ray sources were discovered during calibration measurements using Cyg X-1 as the target. The cataclysmic binary Am Her has been determined to have a period of 3 hr, in contrast with previous estimates of 1.5 hr made with LEO stationed spacecraft. An accreting white dwarf has been discovered in GK-Per, and its companion has been determined to have an orbital period of about 2 d. X ray emission from Jupiter, Algol, and active galactic nuclei have also been tracked.

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