HEXAGONE observation of the Galactic center gamma-ray continuum

Details HEXAGONE observation of the Galactic center gamma-ray continuum HEXAGONE observation of the Galactic center gamma-ray continuum

Jan 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26as...97..199s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 97, no. 1, p. 199-203.

Astronomy and Astrophysics

Astronomy

3

Galactic Nuclei, Gamma Ray Astronomy, Milky Way Galaxy, Astronomical Models, Compton Effect, Diffuse Radiation, Emission Spectra, Point Sources, Spectrometers

Scientific paper

The spectrum of the Galactic center region obtained by the HEXAGONE germanium spectrometer in 1989 is analyzed with a new technique that accounts for the nondiagonal energy response of the instrument and atmosphere in a model-independent way. The continuum shows a distinct feature centered at 178 keV with a FWHM of 55 keV and flux 1.47 x 10 exp -3 photons/sq cm/s. We discuss the contributions of point sources and diffuse Galactic emission to the continuum, and the possible interpretation of the 178 keV feature as Compton backscattering of radiation near 511 keV.

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