Science with the New Generation of High Energy Gamma-Ray Experiments #6

Session

Extragalactic Sources 1

9 Oct 2008, 15:40

Padova

6. Formation of hard VHE gamma-ray spectra of blazars due to internal photon-photon absorption

Dmitry Khangulyan (MPI f. Kernphysik, Heidelberg)

09/10/2008, 16:00

The energy spectra of TeV gamma-rays from blazars, after being corrected for intergalatic absorption in the Extragalactic Background Light, appear unusually hard. We show that the internal absorption of gamma-rays caused by interactions with dense narrow-band radiation fields in the vicinity of compact gamma-ray production regions should lead to the formation of very hard gamma-ray...