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http://hdl.handle.net/2289/6752
Title: | Constraints on a proton synchrotron origin of VHE gamma rays from the extended jet of AP librae. |
Authors: | Basumallick, Partha Pratim Gupta, Nayantara |
Keywords: | BL Lacertae objects jets gamma rays galaxies |
Issue Date: | Jul-2017 |
Publisher: | IOP Sciences for The American Astronomical Society |
Citation: | The Astrophysical Journal, 2017, Vol.844, p58 |
Abstract: | 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 × 1021 eV and a high magnetic field of 1 mG of the extended jet with jet power ~5 × 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. |
Description: | Open Access |
URI: | http://hdl.handle.net/2289/6752 |
ISSN: | 0004-637X 1538-4357-(Online) |
Alternative Location: | http://adsabs.harvard.edu/abs/2017ApJ...844...58P http://arxiv.org/abs/1706.04895 http://dx.doi.org/10.3847/1538-4357/aa7a12 |
Copyright: | 2017, The American Astronomical Society. |
Appears in Collections: | Research Papers (A&A) |
Files in This Item:
File | Description | Size | Format | |
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2017_AstrophyJournal_844_58pdf.pdf | Open Access | 4.17 MB | Adobe PDF | View/Open |
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