AMI-CL J0300+2613: A Galactic anomalous-microwave-emission ring masquerading as a galaxy cluster
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Peer-reviewed
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Abstract
The Arcminute Microkelvin Imager (AMI) carried out a blind survey for galaxy clusters via their Sunyaev-Zel'dovich effect decrements between 2008 and 2011. The first detection, known as AMI-CL J0300+2613, has been reobserved with AMI equipped with a new digital correlator with high dynamic range. The combination of the new AMI data and more recent high-resolution sub-mm and infra-red maps now shows the feature in fact to be a ring of positive dust-correlated Galactic emission, which is likely to be anomalous microwave emission (AME). If so, this is the first completely blind detection of AME at arcminute scales.
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Keywords
dust, extinction, galaxies: clusters: individual: AMI-CL J0300+2613, infrared: ISM, radio continuum: ISM
Journal Title
Monthly Notices of the Royal Astronomical Society
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Journal ISSN
0035-8711
1365-2966
1365-2966
Volume Title
473
Publisher
Oxford University Press (OUP)
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Sponsorship
STFC (1364729)
STFC (1490819)
Science and Technology Facilities Council (ST/M001172/1)
STFC (1490819)
Science and Technology Facilities Council (ST/M001172/1)