EMU detection of a large and low surface brightness Galactic SNR G288.8-6.3

Miroslav D. Filipović; Shi Dai; Bojan Arbutina; Natasha Hurley-Walker; Robert Brose; Werner Becker; Hidetoshi Sano; Dejan Urošević; T. H. Jarrett; Andrew M. Hopkins; Rami Z. E. Alsaberi; R. Alsulami; Cristobal Bordiu; Brianna Ball; Filomena Bufano; Christopher Burger-Scheidlin; Evan Crawford; Jayanne English; Frank Haberl; Adriano Ingallinera; Anna D. Kapinska; Patrick J. Kavanagh; Bärbel S. Koribalski; Roland Kothes; Sanja Lazarević; Jonathan Mackey; Gavin Rowell; Denis Leahy; Sara Loru; Peter J. Macgregor; Luciano Nicastro; Ray P. Norris; Simone Riggi; Manami Sasaki; Milorad Stupar; Corrado Trigilio; Grazia Umana; Tessa Vernstrom; Branislav Vukotić

doi:10.3847/1538-3881/acf19c

EMU detection of a large and low surface brightness Galactic SNR G288.8-6.3

Miroslav D. Filipović, Shi Dai^*, Bojan Arbutina, Natasha Hurley-Walker, Robert Brose, Werner Becker, Hidetoshi Sano, Dejan Urošević, T. H. Jarrett, Andrew M. Hopkins, Rami Z. E. Alsaberi, R. Alsulami, Cristobal Bordiu, Brianna Ball, Filomena Bufano, Christopher Burger-Scheidlin, Evan Crawford, Jayanne English, Frank Haberl, Adriano IngallineraAnna D. Kapinska, Patrick J. Kavanagh, Bärbel S. Koribalski, Roland Kothes, Sanja Lazarević, Jonathan Mackey, Gavin Rowell, Denis Leahy, Sara Loru, Peter J. Macgregor, Luciano Nicastro, Ray P. Norris, Simone Riggi, Manami Sasaki, Milorad Stupar, Corrado Trigilio, Grazia Umana, Tessa Vernstrom, Branislav Vukotić

^*Corresponding author for this work

School of Mathematical and Physical Sciences

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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.

Original language	English
Article number	149
Pages (from-to)	1-11
Number of pages	11
Journal	Astronomical Journal
Volume	166
Issue number	4
DOIs	https://doi.org/10.3847/1538-3881/acf19c
Publication status	Published - 1 Oct 2023

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Copyright © 2023. The Author(s). Published by the American Astronomical Society. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

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Filipović, M. D., Dai, S., Arbutina, B., Hurley-Walker, N., Brose, R., Becker, W., Sano, H., Urošević, D., Jarrett, T. H., Hopkins, A. M., Alsaberi, R. Z. E., Alsulami, R., Bordiu, C., Ball, B., Bufano, F., Burger-Scheidlin, C., Crawford, E., English, J., Haberl, F., ... Vukotić, B. (2023). EMU detection of a large and low surface brightness Galactic SNR G288.8-6.3. Astronomical Journal, 166(4), 1-11. Article 149. https://doi.org/10.3847/1538-3881/acf19c

@article{80a84cdc3a504dc390b5a39e9f6c6b70,

title = "EMU detection of a large and low surface brightness Galactic SNR G288.8-6.3",

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.",

author = "Filipovi{\'c}, {Miroslav D.} and Shi Dai and Bojan Arbutina and Natasha Hurley-Walker and Robert Brose and Werner Becker and Hidetoshi Sano and Dejan Uro{\v s}evi{\'c} and Jarrett, {T. H.} and Hopkins, {Andrew M.} and Alsaberi, {Rami Z. E.} and R. Alsulami and Cristobal Bordiu and Brianna Ball and Filomena Bufano and Christopher Burger-Scheidlin and Evan Crawford and Jayanne English and Frank Haberl and Adriano Ingallinera and Kapinska, {Anna D.} and Kavanagh, {Patrick J.} and Koribalski, {B{\"a}rbel S.} and Roland Kothes and Sanja Lazarevi{\'c} and Jonathan Mackey and Gavin Rowell and Denis Leahy and Sara Loru and Macgregor, {Peter J.} and Luciano Nicastro and Norris, {Ray P.} and Simone Riggi and Manami Sasaki and Milorad Stupar and Corrado Trigilio and Grazia Umana and Tessa Vernstrom and Branislav Vukoti{\'c}",

note = "Copyright {\textcopyright} 2023. The Author(s). Published by the American Astronomical Society. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.",

year = "2023",

month = oct,

day = "1",

doi = "10.3847/1538-3881/acf19c",

language = "English",

volume = "166",

pages = "1--11",

journal = "Astronomical Journal",

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publisher = "Institute of Physics",

number = "4",

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Filipović, MD, Dai, S, Arbutina, B, Hurley-Walker, N, Brose, R, Becker, W, Sano, H, Urošević, D, Jarrett, TH, Hopkins, AM, Alsaberi, RZE, 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, 'EMU detection of a large and low surface brightness Galactic SNR G288.8-6.3', Astronomical Journal, vol. 166, no. 4, 149, pp. 1-11. https://doi.org/10.3847/1538-3881/acf19c

TY - JOUR

T1 - EMU detection of a large and low surface brightness Galactic SNR G288.8-6.3

AU - Filipović, Miroslav D.

AU - Dai, Shi

AU - Arbutina, Bojan

AU - Hurley-Walker, Natasha

AU - Brose, Robert

AU - Becker, Werner

AU - Sano, Hidetoshi

AU - Urošević, Dejan

AU - Jarrett, T. H.

AU - Hopkins, Andrew M.

AU - Alsaberi, Rami Z. E.

AU - Alsulami, R.

AU - Bordiu, Cristobal

AU - Ball, Brianna

AU - Bufano, Filomena

AU - Burger-Scheidlin, Christopher

AU - Crawford, Evan

AU - English, Jayanne

AU - Haberl, Frank

AU - Ingallinera, Adriano

AU - Kapinska, Anna D.

AU - Kavanagh, Patrick J.

AU - Koribalski, Bärbel S.

AU - Kothes, Roland

AU - Lazarević, Sanja

AU - Mackey, Jonathan

AU - Rowell, Gavin

AU - Leahy, Denis

AU - Loru, Sara

AU - Macgregor, Peter J.

AU - Nicastro, Luciano

AU - Norris, Ray P.

AU - Riggi, Simone

AU - Sasaki, Manami

AU - Stupar, Milorad

AU - Trigilio, Corrado

AU - Umana, Grazia

AU - Vernstrom, Tessa

AU - Vukotić, Branislav

N1 - Copyright © 2023. The Author(s). Published by the American Astronomical Society. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.

PY - 2023/10/1

Y1 - 2023/10/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85170674585&partnerID=8YFLogxK

U2 - 10.3847/1538-3881/acf19c

DO - 10.3847/1538-3881/acf19c

M3 - Article

AN - SCOPUS:85170674585

SN - 0004-6256

VL - 166

SP - 1

EP - 11

JO - Astronomical Journal

JF - Astronomical Journal

IS - 4

M1 - 149

ER -

EMU detection of a large and low surface brightness Galactic SNR G288.8-6.3

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