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An upper limit to polarized submillimetre emission in Arp 220

Seiffert, Michael and Borys, Colin and Scott, Douglas and Halpern, Mark (2007) An upper limit to polarized submillimetre emission in Arp 220. Monthly Notices of the Royal Astronomical Society, 374 (2). pp. 409-414. ISSN 0035-8711.

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We report the results of pointed observations of the prototypical ultraluminous infrared galaxy (ULIRG) Arp 220 at 850 μm using the polarimeter on the Submillimetre Common User Bolometer Array instrument on the James Clerk Maxwell Telescope. We find a Bayesian 99 per cent confidence upper limit on the polarized emission for Arp 220 of 1.54 per cent, averaged over the 15-arcsec beam-size. Arp 220 can serve as a proxy for other, more distant such galaxies. This upper limit constrains the magnetic field geometry in Arp 220 and also provides evidence that polarized ULIRGs will not be a major contaminant for next-generation cosmic microwave background polarization measurements.

Item Type:Article
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URLURL TypeDescription
Scott, Douglas0000-0002-6878-9840
Halpern, Mark0000-0002-1760-0868
Additional Information:© 2006 Jet Propulsion Laboratory, California Institute of Technology. Journal compilation © 2006 RAS. No claim to original US government works. Accepted 2006 October 4. Received 2006 October 2; in original form 2006 February 8. It is a pleasure to thank Jane Greaves, Gerald Moriarty-Schieven and Barth Netterfield for useful discussion. We also thank the entire JAC staff for their assistance. The JCMT is operated by The Joint Astronomy Center on behalf of the Particle Physics and Astronomy Research Council of the United Kingdom, the Netherlands Organisation for Scientific Research, and the National Research Council of Canada. This work was supported in part by the Natural Sciences and Engineering Research Council of Canada. The research described in this paper was performed in part at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.
Funding AgencyGrant Number
Natural Sciences and Engineering Research Council of CanadaUNSPECIFIED
Subject Keywords:galaxies: individual: Arp 220; galaxies: magnetic fields; cosmic microwave background
Issue or Number:2
Record Number:CaltechAUTHORS:20100219-112012595
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:17539
Deposited By: Jason Perez
Deposited On:19 Feb 2010 21:18
Last Modified:09 Mar 2020 13:19

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