Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982s%26w....21..286s&link_type=abstract
Sterne und Weltraum, vol. 21, July-Aug. 1982, p. 286-290. In German. Research supported by the Deutsche Forschungsgemeinschaft.
Astronomy and Astrophysics
Astronomy
Balloon-Borne Instruments, Neutron Stars, Quasars, Stellar Magnetic Fields, X Ray Astronomy, Binary Stars, Black Holes (Astronomy), Crab Nebula, Pulsars, X Ray Spectra
Scientific paper
The high-energy X-ray experiment (HEXE), which sent an X-ray observatory up to 40 km by balloon, is discussed. The telescope and detection instruments are described in detail, and the main targets of observation, the neutron star Hercules X-1 and the star HZ Herculis, are discussed. Other target sources included pulsating X-ray double stars, the Crab nebula and pulsar, and the extragalactic object Cen A. The high-energy X-ray spectrum of Cygnus X-1 and of Hercules X-1 are shown. The hypothesis that a black hole exists in the former is supported by the results, and the resolution of the Hercules X-1 line structure will enable its magnetic field to be measured.
Staubert Rüdiger
Truemper Joachim
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