A search for gamma rays of 1.5-20.0 MeV from Centaurus A

Details A search for gamma rays of 1.5-20.0 MeV from Centaurus A A search for gamma rays of 1.5-20.0 MeV from Centaurus A

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...339...78o&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 339, April 1, 1989, p. 78-83.

Astronomy and Astrophysics

Astronomy

6

Elliptical Galaxies, Gamma Ray Astronomy, Radio Sources (Astronomy), X Ray Sources, Compton Effect, Monte Carlo Method, Signal To Noise Ratios, Sky Surveys (Astronomy), Spectral Energy Distribution

Scientific paper

A search for a gamma-ray continuum and lines from Centaurus A is reported. No measurable gamma rays are found in the 1.5-20.0 MeV and 3 sigma upper limits are reported for various energies which are about a factor of two lower than the results reported by von Ballmoos et al. (1987). These upper limits, along with those of SAS 2 and COS B, suggest that the energy distribution turns over in the energy range of 500 keV to a few MeV. A high source temperature of 5 MeV or synchrotron self-Compton models for producing an excess of gamma rays of a few MeV do not appear necessary.

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