High energy gamma-ray emission from 3C279

Details High energy gamma-ray emission from 3C279 High energy gamma-ray emission from 3C279

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993acasn..34....5w&link_type=abstract

Acta Astronomica Sinica (ISSN 0001-5245), vol. 34, no. 1, p. 5-11.

Astronomy and Astrophysics

Astronomy

Active Galactic Nuclei, Emission Spectra, Gamma Ray Spectra, Absorption Spectra, Compton Effect, Electron Energy, Pair Production, Power Spectra

Scientific paper

High energy gamma-ray emission was detected in 3C279 at up to 10 GeV with a flat power-law spectrum (Hartman et al. 1992), but the emission mechanism is not very clear. In this paper, gamma-ray absorption by pair production is used to constrain the emission regions of X-rays and gamma-rays. It is required that the gamma-rays and X-rays are produced in the relativistic blobs or from two distinct regions far apart. Furthermore, if they are produced in the same region or contiguous regions, the relativistic boosting factor delta greater than 10 is required. By considering high cutoff in the electron energy distribution, we show that inverse Compton model can be used to explain the observed spectrum.

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