VERY LARGE ARRAY DETECTION OF THE 36 GHz ZEEMAN EFFECT IN DR21W REVISITED
Name
Momjian-2012-Very Large Array Det.pdf
Size
97.84 KB
Format
Adobe PDF
Checksum (MD5)
05fadff7af8f2f82a9dc779effa1d255
Author(s)
Momjian, Emmanuel
Fish, Vincent L.
Sjouwerman, Lorant O.
Date Issued
August 2012
Journal
The Astrophysical Journal
Publisher
IOP Publishing
Citation
Momjian, Emmanuel, Lorant O. Sjouwerman, and Vincent L. Fish. “VERY LARGE ARRAY DETECTION OF THE 36 GHz ZEEMAN EFFECT IN DR21W REVISITED.” The Astrophysical Journal 757, no. 1 (August 31, 2012): 30. © 2012 The American Astronomical Society
Version
Final published version
Abstract
We report on the observation of the 36 GHz methanol maser line in the star-forming region DR21W to accurately measure the Zeeman effect. The Zeeman signature reported by Fish et al. became suspicious after an instrumental effect was discovered in the early days of the commissioning of the Very Large Array Wide-band Digital Architecture correlator. We conclude that the previously reported magnetic field strength of 58 mG (1.7 Hz mG[superscript –1]/z) is instrumental in nature and thus incorrect. With the improved performance of the array, we now deduce a 3σ limit of –4.7 to +0.4 mG (1.7 Hz mG[superscript –1]/z) for the line-of-sight component of the magnetic field strength in DR21W.
MIT Department
Haystack Observatory
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/0004-637X/757/1/30
