Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981xras.nasa..567h&link_type=abstract
In NASA. Goddard Space Flight Center X-ray Astronomy in the 1980's p 567-598 (SEE N82-26055 16-88)
Astronomy and Astrophysics
Astronomy
Astronomical Spectroscopy, Continuous Spectra, Emission Spectra, Spectral Bands, Spectrometers, X Ray Spectroscopy, Broadband, Cosmic X Rays, Germanium, Line Spectra, Sodium Iodides, Space Shuttle Payloads, Spectral Sensitivity, Supernovae, X Ray Binaries
Scientific paper
The astrophysical processes responsible for line and continuum emission in the spectra range 2 keV to 200 keV are examined from the viewpoint of designing a spectrometer which would operate in this regime. Phenomena considered include fluorescent line radiation in X-ray binaries, magnetically shifted iron lines and cyclotron emission from neutron star surfaces, line emission from cosmically abundant elements in thermal plasmas, and nuclear deexcitation lines in fresh nucleosynthetically produced matter. An instrument consisting of a approximately 10 sq cm array of planar germanium detectors surrounded by a large sodium-iodide anticoincidence shield is described and projected background rates and sensitivities are considered. A sample observing program for a two-day shuttle-based mission is included as an example of the wide range of scientific questions which could be addressed by such an instrument.
Chanan Gary A.
Helfand David J.
Leventhal Marvin
MacCallum Crawford J.
Novick Robert
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