2001A&A...371...61P


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.30CET03:03:12

2001A&A...371...61P - Astronomy and Astrophysics, volume 371, 61-67 (2001/5-3)

On the hadronic beam model of TeV γ-ray flares from blazars.

PURMOHAMMAD D. and SAMIMI J.

Abstract (from CDS):

We propose two models, based on the hadronic beam-cloud collision, for production of TeV γ-ray flares in blazars. In the first model, a change in bulk Lorentz factor of the jet of the Active Galactic Nucleus (AGN) produces the flare. In the second model we consider a two-stage mechanism for high-energy particle acceleration in the jet. This system produces a power law spectrum with two different power indices at low and high energies, which is more efficient than one-stage shock acceleration at high energies. Using this spectrum in a hadronic beam-cloud model for γ-ray emission of blazars, a variable TeV as well as a stable GeV γ-ray flux is predicted. The break energy in the spectrum, related to distance between the jet base and terminal shock or boundary layer thickness, is the parameter used to obtain TeV flares.

Abstract Copyright:

Journal keyword(s): gamma rays: theory - galaxies: jets - Bl Lacertae objects: individual: Mrk 421 - acceleration of particles

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 Mrk 421 BLL 11 04 27.3139210166 +38 12 31.798324828   13.50 12.90 8.31   ~ 2406 1
2 4C 39.49 BLL 16 53 52.21668494 +39 45 36.6089458 14.09 14.15 13.29 8.26   ~ 1935 2

    Equat.    Gal    SGal    Ecl

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2020.10.30-03:03:12

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