Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978stin...7916790f&link_type=abstract
Unknown
Astronomy and Astrophysics
Astrophysics
Astrophysics, Energy Levels, Gamma Rays, Sas, Spaceborne Astronomy, Gamma Ray Astronomy, Gamma Ray Telescopes, Satellite Orbits, Tables (Data)
Scientific paper
The second small astronomy satellite (SAS-2) carried a high energy gamma ray telescope into an equitorial orbit with a 2 D inclination, an apogee of 610 km, and a perigee of 440 km. The energy threshold of the instrument was about 30 MeV, the energy of the gamma rays could be measured up to about 200 MeV, and the integral intensity above 200 MeV could also be measured. Summary tables of the gamma ray data are presented in two energy bands, 35-100 MeV and 100 MeV. The sky was divided into 144 solid angle elements, and, in each solid angle element for which data exist, the number of gamma rays observed is given and also the exposure factor. Information is provided to permit conversion of these data into approximate intensities.
Fichtel Carl E.
Hartman Robert C.
Kniffen Donald A.
Ogelman Hakki B.
Ozel Mehmet Emin
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