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A magnetized disk around an O star: Polarization of the OH maser emission

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Abstract

W75N is one of the first OH masers in which 100% linear polarization has been observed in several spots. Two spots contain Zeeman pairs, corresponding to magnetic fields of 5.2 and 7.7 mG. Another Zeeman pair consisting of two linearly polarized components was tentatively detected in one spot. The linearly polarized spots are σ components for the case when the magnetic field is perpendicular to the line of sight. For these spots, the magnetic field is perpendicular to the plane of the circumstellar disk, though a correction for Galactic Faraday rotation may considerably modify this conclusion.

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Authors and Affiliations

  1. Astro Space Center, Lebedev Physical Institute, Russian Academy of Sciences, Profsoyuznaya ul. 84/32, Moscow, 117810, Russia

    V. I. Slysh & I. E. Val’tts

  2. University of Guanajuato, Department of Astronomy, Apdo Postal 144, Guanajuato GTO, CP36000, Mexico

    V. Migenes

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  1. V. I. Slysh
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  2. I. E. Val’tts
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  3. V. Migenes
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Translated from Astronomicheski\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Zhurnal, Vol. 79, No. 3, 2002, pp. 240–248.

Original Russian Text Copyright © 2002 by Slysh, Val’tts, Migenes.

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Slysh, V.I., Val’tts, I.E. & Migenes, V. A magnetized disk around an O star: Polarization of the OH maser emission. Astron. Rep. 46, 216–223 (2002). https://doi.org/10.1134/1.1463099

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  • DOI: https://doi.org/10.1134/1.1463099

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