SIMBAD references

2017ApJ...844...58B - Astrophys. J., 844, 58-58 (2017/July-3)

Constraints on a proton synchrotron origin of VHE gamma rays from the extended jet of AP Librae.


Abstract (from CDS):

The multiwavelength photon spectrum from the BL Lac object AP Librae extends from radio to TeV gamma rays. The X-ray to very high-energy gamma-ray emission from the extended jet of this source has been modeled with inverse Compton (IC) scattering of relativistic electrons off the cosmic microwave background (CMB) photons. The IC/CMB model requires the kpc-scale extended jet to be highly collimated with a bulk Lorentz factor close to 10. Here we discuss the possibility of a proton synchrotron origin of X-rays and gamma rays from the extended jet with a bulk Lorentz factor of 3. This scenario requires an extreme proton energy of 3.98 x 1021 eV and a high magnetic field of 1 mG of the extended jet with jet power ∼5 x 1048 erg s–1 in particles and the magnetic field (which is more than 100 times the Eddington luminosity of AP Librae) to explain the very high-energy gamma-ray emission. Moreover, we have shown that X-ray emission from the extended jets of 3C 273 and PKS 0637-752 could be possible by proton synchrotron emission with jet power comparable to the Eddington luminosities.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): BL Lacertae objects: individual: AP Librae - galaxies: active - galaxies: general - galaxies: jets - gamma rays: galaxies - gamma rays: galaxies

Simbad objects: 7

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