EMU Detection of a Large and Low Surface Brightness Galactic SNR G288.8-6.3
Filipović MD, Dai S, Arbutina B, Hurley-Walker N, Brose R, Becker W, Sano H, Urošević D, Jarrett TH, Hopkins AM, Alsaberi RZ, Alsulami R, Bordiu C, Ball B, Bufano F, Burger-Scheidlin C, Crawford E, English J, Haberl F, Ingallinera A, Kapinska AD, Kavanagh PJ, Koribalski BS, Kothes R, Lazarević S, Mackey J, Rowell G, Leahy D, Loru S, Macgregor PJ, Nicastro L, Norris RP, Riggi S, Sasaki M, Stupar M, Trigilio C, Umana G, Vernstrom T, Vukotić B (2023)
Publication Type: Journal article
Publication year: 2023
Journal
Book Volume: 166
Article Number: 149
Journal Issue: 4
Abstract
We present the serendipitous detection of a new Galactic supernova remnant (SNR), G288.8-6.3, using data from the Australian Square Kilometre Array Pathfinder (ASKAP) Evolutionary Map of the Universe (EMU) survey. Using multifrequency analysis, we confirm this object as an evolved Galactic SNR at high Galactic latitude with low radio surface brightness and typical SNR spectral index of α = − 0.41 ± 0.12. To determine the magnetic field strength in SNR G288.8-6.3, we present the first derivation of the equipartition formulae for SNRs with spectral indices α > − 0.5. The angular size is 1.°8 × 1.°6 (107.′6 × 98.′4), and we estimate that its intrinsic size is ∼40 pc, which implies a distance of ∼1.3 kpc and a position of ∼140 pc above the Galactic plane. This is one of the largest in angular size and closest Galactic SNRs. Given its low radio surface brightness, we suggest that it is about 13,000 yr old.
Authors with CRIS profile
Involved external institutions
University of Western Sydney
Australia (AU)
University of Belgrade / Универзитет у Београду
Serbia (RS)
International Centre for Radio Astronomy Research
Australia (AU)
DIAS Dunsink Observatory
Ireland (IE)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
Gifu University / 岐阜大学
Japan (JP)
Macquarie University
Australia (AU)
University of Adelaide
Australia (AU)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
National Research Council / Conseil national de recherches Canada
Canada (CA)
University of Manitoba
Canada (CA)
National Radio Astronomy Observatory
United States (USA) (US)
Maynooth University
Ireland (IE)
University of Calgary
Canada (CA)
University of Western Australia (UWA)
Australia (AU)
Astronomical Observatory Belgrade
Serbia (RS)
Australia (AU)
University of Belgrade / Универзитет у Београду
Serbia (RS)
International Centre for Radio Astronomy Research
Australia (AU)
DIAS Dunsink Observatory
Ireland (IE)
Max-Planck-Institut für extraterrestrische Physik (MPE) / Max Planck Institute for Extraterrestrial Physics
Germany (DE)
Gifu University / 岐阜大学
Japan (JP)
Macquarie University
Australia (AU)
University of Adelaide
Australia (AU)
National Institute for Astrophysics / Istituto Nazionale Astrofisica (INAF)
Italy (IT)
National Research Council / Conseil national de recherches Canada
Canada (CA)
University of Manitoba
Canada (CA)
National Radio Astronomy Observatory
United States (USA) (US)
Maynooth University
Ireland (IE)
University of Calgary
Canada (CA)
University of Western Australia (UWA)
Australia (AU)
Astronomical Observatory Belgrade
Serbia (RS)
How to cite
APA:
Filipović, M.D., Dai, S., Arbutina, B., Hurley-Walker, N., Brose, R., Becker, W.,... Vukotić, B. (2023). EMU Detection of a Large and Low Surface Brightness Galactic SNR G288.8-6.3. Astronomical Journal, 166(4). https://doi.org/10.3847/1538-3881/acf19c
MLA:
Filipović, Miroslav D., et al. "EMU Detection of a Large and Low Surface Brightness Galactic SNR G288.8-6.3." Astronomical Journal 166.4 (2023).
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