INVESTIGADORES
ORELLANA Mariana Dominga
congresos y reuniones científicas
Título:
On the reprocessing of gamma-rays produced by jets
Autor/es:
MARIANA ORELLANA
Lugar:
Buenos Aires
Reunión:
Simposio; IAU Symposium S275 (Jets at all Scales); 2010
Institución organizadora:
IAU
Resumen:
Systems of two very different size-scales 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 modelling 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.