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Carbon and hydrogen radio recombination lines from the cold clouds towards Cassiopeia A

Abstract:

We use the Low Frequency Array to perform a systematic high spectral resolution investigation of the low-frequency 33–78 MHz spectrum along the line of sight to Cassiopeia A. We complement this with a 304–386 MHz Westerbork Synthesis Radio Telescope observation. In this first paper, we focus on the carbon radio recombination lines. We detect Cnα lines at −47 and −38 km s−1 in absorption for quantum numbers n = 438–584 and in emission for n = 257–278 with a high signal-to-noise ratio. These li...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1093/mnras/stw2818

Authors


van Weeren, RJ More by this author
Salgado, F More by this author
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Physics; Astrophysics
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Harvard–Smithsonian Center for Astrophysics More from this funder
Dutch Science Organization More from this funder
Publisher:
Oxford University Press Publisher's website
Journal:
Monthly Notices of the Royal Astronomical Society Journal website
Volume:
465
Issue:
1
Pages:
1066-1088
Publication date:
2017-11-05
Acceptance date:
2016-10-31
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
Pubs id:
pubs:821150
URN:
uri:7e858d2c-d560-4cd4-8f67-f0060f1b8f13
UUID:
uuid:7e858d2c-d560-4cd4-8f67-f0060f1b8f13
Local pid:
pubs:821150

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