Cara, M, Perlman, ES, Uchiyama, Y, Jester, S, Georganopoulos, M, Cheung, CC, Sambruna, RM, Sparks, WB, Martel, A, O'Dea, CP, Baum, SA, Axon, D, Begelman, M, Worrall, DM, Birkinshaw, M, Urry, CM, Coppi, P and Stawarz, L (2010) Polarimetry and the High-Energy Emission Mechanisms in Quasar Jets. In: MONSTER'S FIERY BREATH: FEEDBACK IN GALAXIES, GROUPS, AND CLUSTERS, 1-5 June 2009., Madison, WI..

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Abstract

The emission mechanisms in extragalactic jets include synchrotron and various inverse-Compton processes. At low (radio through infrared) energies, it is widely agreed that synchrotron emission dominates in both low-power (FR I) and high-power (FR II and quasar) jets, because of the power-law nature of the spectra observed and high polarizations. However, at higher energies, the emission mechanism for high-power jets at kpc scales is hotly debated. Two mechanisms have been proposed: either inverse-Compton of cosmic microwave background photons or synchrotron emission from a second, high-energy population of electrons. Here we discuss optical polarimetry as a method for diagnosing the mechanism for the high-energy emission in quasar jets, as well as revealing the jet's three-dimensional energetic and magnetic field structure. We then discuss high-energy emission mechanisms for powerful jets in the light of the HST polarimetry of PKS 1136-135.

Item Type:	Conference or Workshop Item (Paper)
Additional Information:	Published in: THE MONSTER'S FIERY BREATH: FEEDBACK IN GALAXIES, GROUPS, AND CLUSTERS. AIP Conference Proceedings, Volume 1201, pp. 162-165 (2009).
Schools and Departments:	School of Mathematical and Physical Sciences > Physics and Astronomy
Depositing User:	EPrints Services
Date Deposited:	06 Feb 2012 20:26
Last Modified:	30 Mar 2012 10:50
URI:	http://sro.sussex.ac.uk/id/eprint/25947

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