Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...274..549s&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 274, Nov. 15, 1983, p. 549-557.
Astronomy and Astrophysics
Astronomy
18
Galactic Nuclei, Galactic Radiation, Gamma Ray Astronomy, Infrared Astronomy, X Ray Sources, Astronomical Models, Galactic Clusters, Intergalactic Media, Synchrotron Radiation
Scientific paper
The COS B gamma-ray data used in the present search for possible emission mechanisms in the halo and nucleus of NGC 1275 show a gamma-ray excess at the galaxy's position which, if interpreted as emission from the galaxy, yields consequences concerning the origin of the hard X-rays and the IR-optical emission from the nucleus. These data are studied in the context of various synchrotron self-Compton (SSC) models for the nucleus. If the nonthermal spectrum includes the observed 10-micron region, the SSC process can easily produce the observed X- and gamma-ray fluxes. If SSC only extends to X-ray energies, the same electrons can produce the gamma-rays by inverse-Compton on the IR and optical radiation fields (if these originate in the nucleus).
Bignami Giovanni F.
Strong Andrew W.
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