Galactic synchrotron emissivity measurements between 250° MWA

Su, H., Hurley-Walker, N., Jackson, C. A., McClure-Griffiths, N. M., Tingay, S. J., Hindson, L., Hancock, P., Wayth, R. B., Gaensler, B. M., Staveley-Smith, L., Morgan, J., Johnston-Hollitt, M., Lenc, E., Bell, M. E., Callingham, J. R., Dwarkanath, K. S., For, B. Q., Kapińska, A. D., McKinley, B., Offringa, A. R., Procopio, P., Wu, C. and Zheng, Q. (2017) Galactic synchrotron emissivity measurements between 250° MWA. Monthly Notices of the Royal Astronomical Society (MNRAS), 465 (3). pp. 3163-3174. ISSN 0035-8711
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Synchrotron emission pervades the Galactic plane at low radio frequencies, originating from cosmic ray electrons interacting with the Galactic magnetic field. Using a low-frequency radio telescope, the Murchison Widefield Array (MWA), we measure the free-free absorption of this Galactic synchrotron emission by intervening HII regions along the line of sight. These absorption measurements allow us to calculate the Galactic cosmic-ray electron emissivity behind and in front of 47 detected HII regions in the region $250^\circ
Item Type Article
Additional information This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record, H. Su et al, 'Galactic synchrotron emissivity measurements between 250◦ < l < 355◦ from the GLEAM survey with the MWA', MNRAS, 465(3): 3163-3174, first published online 17 November 2016, is available via doi: 10.1093/mnras/stw2959. © : 2016 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.
Keywords astro-ph.ga
Date Deposited 15 May 2025 13:19
Last Modified 31 May 2025 00:08

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