ASKAP$-$EMU Discovery of "Raspberry": a new Galactic SNR Candidate G308.73+1.38
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| Soggetti: | |
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| author | Lazarević, Sanja Filipović, Miroslav D. Koribalski, Bärbel S. Smeaton, Zachary J. Hopkins, Andrew M. Alsaberi, Rami Z. E. Velović, Velibor Ball, Brianna D. Kothes, Roland Leahy, Denis Ingallinera, Adriano |
| author_facet | Lazarević, Sanja Filipović, Miroslav D. Koribalski, Bärbel S. Smeaton, Zachary J. Hopkins, Andrew M. Alsaberi, Rami Z. E. Velović, Velibor Ball, Brianna D. Kothes, Roland Leahy, Denis Ingallinera, Adriano |
| contents | We report the ASKAP discovery of a new Galactic supernova remnant (SNR) candidate G308.73+1.38, which we name Raspberry. This new SNR candidate has an angular size of 20.7 arcmin $\times$ 16.7 arcmin, and we measure a total integrated flux of 407$\pm$50 mJy. We estimate Raspberry's most likely diameter of 10$-$30 pc which would place it at a distance of 3$-$5 kpc, on the near side of the Milky Way's Scutum$-$Centaurus Arm. We also find a Stokes$-$V point source close to the centre of Raspberry with a $\sim$5$σ$ significance. This point source may be the remaining compact source, a neutron star, or possibly a pulsar, formed during the initial supernova event. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_03733 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | ASKAP$-$EMU Discovery of "Raspberry": a new Galactic SNR Candidate G308.73+1.38 Lazarević, Sanja Filipović, Miroslav D. Koribalski, Bärbel S. Smeaton, Zachary J. Hopkins, Andrew M. Alsaberi, Rami Z. E. Velović, Velibor Ball, Brianna D. Kothes, Roland Leahy, Denis Ingallinera, Adriano High Energy Astrophysical Phenomena We report the ASKAP discovery of a new Galactic supernova remnant (SNR) candidate G308.73+1.38, which we name Raspberry. This new SNR candidate has an angular size of 20.7 arcmin $\times$ 16.7 arcmin, and we measure a total integrated flux of 407$\pm$50 mJy. We estimate Raspberry's most likely diameter of 10$-$30 pc which would place it at a distance of 3$-$5 kpc, on the near side of the Milky Way's Scutum$-$Centaurus Arm. We also find a Stokes$-$V point source close to the centre of Raspberry with a $\sim$5$σ$ significance. This point source may be the remaining compact source, a neutron star, or possibly a pulsar, formed during the initial supernova event. |
| title | ASKAP$-$EMU Discovery of "Raspberry": a new Galactic SNR Candidate G308.73+1.38 |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2405.03733 |