Compton scattering model for the gamma-ray emission of NGC 4151

Astronomy and Astrophysics – Astronomy

Scientific paper

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Compton Effect, Emission Spectra, Energy Spectra, Gamma Ray Astronomy, Gamma Ray Spectra, Seyfert Galaxies, Electromagnetic Spectra, Electron Decay Rate, Infrared Astronomy, X Ray Sources

Scientific paper

It is shown that electron lifetimes against Compton losses in NGC 4151 are 2-3 weeks and thus sufficiently large to allow burst-like injection of electrons. Electron pile-up permits to explain the observed gamma-ray spectrum and cut-off very accurately. The total energy content of the burst must then have been of the order of 10 to the 51st erg. If this model is correct, the gamma-ray spectrum must be highly time variable.

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