Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011japa...32..193z&link_type=abstract
Journal of Astrophysics and Astronomy, Volume 32, Issue 1-2, pp. 193-196
Astronomy and Astrophysics
Astrophysics
Galaxies: Jets, Magnetic Fields, Radiation Mechanisms Non-Thermal, X-Rays: Galaxies
Scientific paper
The observed broadband spectral energy distributions (SEDs) of 22 hot spots and 45 knots are modelled with single-zone lepton models. Considering the sources at rest, the X-rays of some hot spots can be explained by the SSC model with magnetic field being consistent with the equipartition magnetic field in magnitude of order 1, but at the same time an unreasonably low magnetic field is required to model the X-rays for all knots. When considering the relativistic bulk motion of the sources, the IC/CMB model well explains the X-ray emission for most of them under the equipartition condition. We show that the ratio of observational luminosity R L is tentatively correlated with the co-moving equipartition magnetic field B_eq^' and the beaming factor δ. These facts suggest that the observational differences of the X-rays from the knots and hot spots may be mainly due to the differences in the Doppler boosting effect and the co-moving magnetic field of the two kinds of source.
Bai Jin-Ming
Chen Liang
Liang Enwei
Zhang Jin
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