COMAP Early Science: VI. A First Look at the COMAP Galactic Plane Survey
Thomas J. Rennie, Stuart E. Harper, Clive Dickinson, Liju Philip,, Kieran A. Cleary, Richard J. Bond, Jowita Borowska, Patrick C. Breysse,, Morgan Catha, Roke Cepeda-Arroita, Dongwoo T. Chung, Sarah E. Church, Delaney, A. Dunne, Hans Kristian Eriksen, Marie Kristine Foss

TL;DR
The paper presents early results from the COMAP Galactic Plane Survey at 30 GHz, revealing diffuse emission, anomalous microwave emission, supernova remnants, and hydrogen recombination lines, providing new insights into Galactic astrophysics.
Contribution
First large-scale 30 GHz survey of the Galactic plane with sub-degree resolution, offering initial findings on emission components and Galactic structures.
Findings
Detection of excess flux at 30 GHz indicating anomalous microwave emission.
Identification of supernova remnants with spectral indices consistent with or steeper than previous studies.
Mapping of hydrogen recombination lines for ionized gas analysis.
Abstract
We present early results from the COMAP Galactic Plane Survey conducted between June 2019 and April 2021, spanning in Galactic longitude and in Galactic latitude with an angular resolution of . The full survey will span - and will be the first large-scale radio continuum survey at GHz with sub-degree resolution. We present initial results from the first part of the survey, including diffuse emission and spectral energy distributions (SEDs) of HII regions and supernova remnants. Using low and high frequency surveys to constrain free-free and thermal dust emission contributions, we find evidence of excess flux density at GHz in six regions that we interpret as anomalous microwave emission. Furthermore we model UCHII contributions using data from the GHz CORNISH catalogue and…
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Astronomy and Astrophysical Research · Radio Astronomy Observations and Technology
