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Covariant magnetoionic theory - II. Radiative transfer

Broderick, Avery and Blandford, Roger (2004) Covariant magnetoionic theory - II. Radiative transfer. Monthly Notices of the Royal Astronomical Society, 349 (3). pp. 994-1008. ISSN 0035-8711. doi:10.1111/j.1365-2966.2004.07582.x.

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Accretion on to compact objects plays a central role in high-energy astrophysics. In these environments, both general relativistic and plasma effects may have significant impacts upon the spectral and polarimetric properties of the accretion flow. In Paper I we presented a fully general relativistic magnetoionic theory, capable of tracing rays in the geometric optics approximation through a magnetized plasma in the vicinity of a compact object. In this paper we discuss how to perform polarized radiative transfer along these rays. In addition we apply the formalism to a barotropic thick-disc model, appropriate for low-luminosity active galactic nuclei. We find that, when the observation frequency is near the plasma and cyclotron frequencies in the innermost portions of the accretion flow, it is possible to generate large fractional polarizations, even when the emission mechanism is unpolarized. This has implications for accreting systems ranging from pulsars and X-ray binaries to active galactic nuclei.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Broderick, Avery0000-0002-3351-760X
Blandford, Roger0000-0002-1854-5506
Additional Information:© 2004 RAS. Accepted 2003 December 22. Received 2003 December 18; in original form 2003 November 16. Published: 11 April 2004. We would like thank Eric Agol and Yasser Rathore for a number of useful conversations and comments regarding this work. This research has been supported by NASA grants 5-2837 and 5-12032.
Funding AgencyGrant Number
NASANAG 5-2837
NASANAG 5-12032
Subject Keywords:black hole physics, magnetic fields, plasmas, polarization, radiative transfer
Issue or Number:3
Record Number:CaltechAUTHORS:20180508-153903458
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Official Citation:Avery Broderick, Roger Blandford; Covariant magnetoionic theory – II. Radiative transfer, Monthly Notices of the Royal Astronomical Society, Volume 349, Issue 3, 11 April 2004, Pages 994–1008,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86296
Deposited By: Tony Diaz
Deposited On:08 May 2018 22:52
Last Modified:15 Nov 2021 20:37

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