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Observed Faraday effects in damped Ly α absorbers and Lyman limit systems: The magnetized environment of galactic building blocks at redshift = 2

Abstract:

Protogalactic environments are typically identified using quasar absorption lines and can manifest as Damped Lyman-alpha Absorbers (DLAs) and Lyman Limit Systems (LLSs). We use radio observations of Faraday effects to test whether these galactic building blocks host a magnetized medium, by combining DLA and LLS detections with 1.4 GHz polarization data from the NRAO VLA Sky Survey (NVSS). We obtain a control, a DLA, and an LLS sample consisting of 114, 19, and 27 lines of sight, respectively....

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.3847/1538-4357/aa7060

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Institution:
University of Oxford
Division:
MPLS Division
Department:
Engineering Science
Department:
Oxford, MPLS, Engineering Science, Oxford E-Research Centre
Role:
Author
ORCID:
0000-0002-2809-4032
More by this author
Role:
Author
ORCID:
0000-0002-3382-9558
More by this author
Role:
Author
ORCID:
0000-0002-3968-3051
University of Toronto More from this funder
National Autonomous University of Mexico More from this funder
David Dunlap family More from this funder
Natural Sciences and Engineering Research Council of Canada More from this funder
U.S. Department of Energy More from this funder
Publisher:
Institute of Physics Publisher's website
Journal:
Astrophysical Journal Journal website
Volume:
841
Issue:
2
Pages:
67
Publication date:
2017-05-01
Acceptance date:
2017-04-28
DOI:
EISSN:
1538-4357
ISSN:
0004-637X
Keywords:
Pubs id:
pubs:807194
UUID:
uuid:1321d52a-4481-4562-976f-7b2ebd9f4a27
Local pid:
pubs:807194
Source identifiers:
807194
Deposit date:
2018-01-05

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