Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981xras.nasa..549m&link_type=abstract
In NASA. Goddard Space Flight Center X-ray Astronomy in the 1980's p 549-566 (SEE N82-26055 16-88)
Astronomy and Astrophysics
Astronomy
Astronomical Spectroscopy, Gamma Ray Spectra, High Energy Interactions, Line Spectra, Spectral Sensitivity, X Ray Spectra, Active Galaxies, Field Of View, Gamma Ray Bursts, Spaceborne Astronomy, Spectral Energy Distribution, Spectral Line Width
Scientific paper
Spectral lines in the 10 keV to 1 MeV range carry information of fundamental importance on many astronomical objects. Since the lines are directly related to specific physical processes this information is model independent and gives the physical conditions in the objects. At the sensitivities achieved to date, approximately 0.0001 to 0.001 phsq cm. sec for steady sources and approximately 0.01 to 1 ph/sq cm sec for transient sources, lines were detected from the galactic center, gamma-ray bursts and transients, X-ray pulsators, the Crab pulsar and solar flares. Future instruments with a factor of approximately 100 sensitivity improvement will allow detailed spectroscopic study of these classes of objects as well as supernova remnants, active galaxies and the interstellar medium. This sensitivity improvement can be obtained through the use of detector technology already proven in balloon and satellite instruments.
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