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Polarimetry and the High-Energy Emission Mechanisms in Quasar Jets.
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posted on 2023-06-08, 06:18 authored by M Cara, ES Perlman, Y Uchiyama, S Jester, M Georganopoulos, CC Cheung, RM Sambruna, WB Sparks, A Martel, CP O'Dea, SA Baum, D Axon, M Begelman, DM Worrall, M Birkinshaw, CM Urry, P Coppi, L StawarzThe 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.
History
Publication status
- Published
ISSN
0094-243XPublisher
Natl Sci Fdn; NASAExternal DOI
Volume
1201Page range
162-165Pages
4.0Presentation Type
- paper
Event name
MONSTER'S FIERY BREATH: FEEDBACK IN GALAXIES, GROUPS, AND CLUSTERSEvent location
Madison, WI.Event type
conferenceEvent date
1-5 June 2009.ISBN
978-0-7354-0738-1Department affiliated with
- Physics and Astronomy Publications
Notes
Published in: THE MONSTER'S FIERY BREATH: FEEDBACK IN GALAXIES, GROUPS, AND CLUSTERS. AIP Conference Proceedings, Volume 1201, pp. 162-165 (2009).Full text available
- No
Peer reviewed?
- Yes
Legacy Posted Date
2012-02-06Usage metrics
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