INVESTIGADORES
PELLIZZA GONZALEZ Leonardo Javier
congresos y reuniones científicas
Título:
On the reprocessing of gamma-rays produced by jets
Autor/es:
ORELLANA, M.; PELLIZZA, L. J.; ROMERO, G. E.
Lugar:
Buenos Aires
Reunión:
Congreso; IAU Symposium 275. Jets at all Scales; 2010
Institución organizadora:
Instituto Argentino de Radioastronomía
Resumen:
Systems of two very different sizescales are known to produce very
high-energy (VHE) radiation in their jets: AGNs and microquasars. The
produced VHE photons (Eγ ~ 1 TeV) can be absorbed by
the intense environmental soft photon fields, coming from the companion
star (in high mass binaries) or from the accreting material (disk+corona
in AGNs), as these are the dominant sources at energies around
~(mec2)2/Eγ. Energetic
pairs are created by the photon-photon annihilation, and, depending on
how efficient are the competing cooling channels, the absorption can
lead to a reprocessing by Inverse Compton pair-cascade development. A
self-consistent modeling of these systems as gamma-ray sources should
then include, along with the emission and absorption processes, a
thorough treatment of the pair cascades. We discuss here on this issue,
focusing on our (preliminary) results of numerical simulations devoted
to a study case similar to the high-mass microquasar candidate LS 5039.