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Full-Sky Maps of the VHF Radio Sky with the Owens Valley Radio Observatory Long Wavelength Array

Eastwood, Michael W. and Hallinan, Gregg (2017) Full-Sky Maps of the VHF Radio Sky with the Owens Valley Radio Observatory Long Wavelength Array. In: Peering towards Cosmic Dawn. Proceedings IAU Symposium. No.333. Cambridge University Press , Cambridge, pp. 110-113. ISBN 9781107192461. http://resolver.caltech.edu/CaltechAUTHORS:20190124-105501338

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Abstract

21-cm cosmology is a powerful new probe of the intergalactic medium at redshifts 20 ≳ z ≳ 6 corresponding to the Cosmic Dawn and Epoch of Reionization. Current observations of the highly-redshifted 21-cm transition are limited by the dynamic range they can achieve against foreground sources of low-frequency (<200 MHz) of radio emission. We used the Owens Valley Radio Observatory Long Wavelength Array (OVRO-LWA) to generate a series of new modern high-fidelity sky maps that capture emission on angular scales ranging from tens of degrees to ∼15 arcmin, and frequencies between 36 and 73 MHz. These sky maps were generated from the application of Tikhonov-regularized m-mode analysis imaging, which is a new interferometric imaging technique that is uniquely suited for low-frequency, wide-field, drift-scanning interferometers.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
https://doi.org/10.1017/S1743921317011231DOIArticle
ORCID:
AuthorORCID
Eastwood, Michael W.0000-0002-4731-6083
Hallinan, Gregg0000-0002-7083-4049
Additional Information:© 2018 International Astronomical Union.
Subject Keywords:cosmology: early universe, ISM: HII regions, ISM: supernova remnants, techniques: interferometric, radio continuum: general
Record Number:CaltechAUTHORS:20190124-105501338
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20190124-105501338
Official Citation:Eastwood, M., & Hallinan, G. (2017). Full-Sky Maps of the VHF Radio Sky with the Owens Valley Radio Observatory Long Wavelength Array. Proceedings of the International Astronomical Union, 12(S333), 110-113. doi:10.1017/S1743921317011231
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92450
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Jan 2019 20:10
Last Modified:24 Jan 2019 20:10

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