Spectra and positions of galactic gamma-ray sources

Details Spectra and positions of galactic gamma-ray sources Spectra and positions of galactic gamma-ray sources

Aug 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icrc....1..217k&link_type=abstract

In NASA. Goddard Space Flight Center 19th Intern. Cosmic Ray Conf., Vol. 1 p 217-220 (SEE N85-33902 22-93)

Computer Science

Angular Resolution, Galactic Nuclei, Gamma Rays, Heao 1, Spectrum Analysis, Time Measurement, Data Reduction, Energy Spectra, X Ray Sources

Scientific paper

The UCSD/MIT Hard X-Ray and Low Energy Gamma-Ray Experiment aboard HEAO-1 scanned the galactic center region during three epochs in 1977 and 1978 from 13 to 180 keV. The results are presented from the scanning epoch of 1978 September. Twenty-two known 2 to 10 keV source positions were necessary for an acceptable fit to the data. The spectra of the 16 strongest, least confused sources are all consistent with power laws with photon spectral indices ranging from 2.1 to 7.2. Acceptable fits to thermal bremsstrahlung models are also possible for most sources. No one source in this survey can be extrapolated to higher energy to match the intensity of the gamma-ray continuum as measured by HEAO-1 large field of view detectors, which implies that the continuum is a composite of contributions from a number of sources.

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