PROBING THE PARSEC-SCALE ACCRETION FLOW OF 3C 84 WITH MILLIMETER WAVELENGTH POLARIMETRY
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Plambeck-2014-Probing the parsec-s.pdf
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Author(s)
Plambeck, R. L.
Bower, Geoffrey C.
Rao, Ramprasad
Marrone, Daniel P.
Jorstad, Svetlana G.
Marscher, Alan P.
Johnson, Michael D.
Doeleman, Sheperd Samuel
Fish, Vincent L.
Date Issued
November 2014
Journal
Astrophysical Journal
Publisher
IOP Publishing
Citation
Plambeck, R. L., G. C. Bower, Ramprasad Rao, D. P. Marrone, S. G. Jorstad, A. P. Marscher, S. S. Doeleman, V. L. Fish, and M. D. Johnson. “PROBING THE PARSEC-SCALE ACCRETION FLOW OF 3C 84 WITH MILLIMETER WAVELENGTH POLARIMETRY.” The Astrophysical Journal 797, no. 1 (November 24, 2014): 66. © 2014 The American Astronomical Society
Version
Final published version
Abstract
We report the discovery of Faraday rotation toward radio source 3C 84, the active galactic nucleus in NGC 1275 at the core of the Perseus Cluster. The rotation measure (RM), determined from polarization observations at wavelengths of 1.3 and 0.9 mm, is (8.7 ± 2.3) × 10[superscript 5] rad m[superscript –2], among the largest ever measured. The RM remained relatively constant over a 2 yr period even as the intrinsic polarization position angle wrapped through a span of 300°. The Faraday rotation is likely to originate either in the boundary layer of the radio jet from the nucleus or in the accretion flow onto the central black hole. The accretion flow probably is disk-like rather than spherical on scales of less than a parsec, otherwise the RM would be even larger.
MIT Department
Haystack Observatory
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DOI of Published Version
https://doi.org/10.1088/0004-637X/797/1/66
