A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I.
We use data from the Evolutionary Map of the Universe (EMU) and Polarization Sky Survey of the Universe’s Magnetism (POSSUM) radio southern sky surveys, conducted with the Australian Square Kilometre Array Pathfinder (ASKAP) to compile a catalog of Galactic supernova remnants (SNRs) and candidate SN...
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| author | B. D. Ball R. Kothes E. Rosolowsky C. Burger-Scheidlin M. D. Filipović S. Lazarević Z. J. Smeaton W. Becker E. Carretti B. M. Gaensler A. M. Hopkins D. Leahy M. Tahani J. L. West C. S. Anderson S. Loru Y. K. Ma N. M. McClure-Griffiths M. J. Michałowski |
| author_facet | B. D. Ball R. Kothes E. Rosolowsky C. Burger-Scheidlin M. D. Filipović S. Lazarević Z. J. Smeaton W. Becker E. Carretti B. M. Gaensler A. M. Hopkins D. Leahy M. Tahani J. L. West C. S. Anderson S. Loru Y. K. Ma N. M. McClure-Griffiths M. J. Michałowski |
| author_sort | B. D. Ball |
| collection | DOAJ |
| description | We use data from the Evolutionary Map of the Universe (EMU) and Polarization Sky Survey of the Universe’s Magnetism (POSSUM) radio southern sky surveys, conducted with the Australian Square Kilometre Array Pathfinder (ASKAP) to compile a catalog of Galactic supernova remnants (SNRs) and candidate SNRs within the region of 277 $\mathop{.}\limits^{\unicode{x000b0}}$ 5 ≤ ℓ ≤ 311 $\mathop{.}\limits^{\unicode{x000b0}}$ 7 Galactic longitude, ∣ b ∣ ≤ 5 $\mathop{.}\limits^{\unicode{x000b0}}$ 4 Galactic latitude, as well as an additional field along the Galactic plane, approximately 315 $\mathop{.}\limits^{\unicode{x000b0}}$ 5 ≤ ℓ ≤ 323 $\mathop{.}\limits^{\unicode{x000b0}}$ 0 Galactic longitude, −4.5 ≤ b ≤ 1.5 Galactic latitude. In the areas studied, there are 44 known SNRs and 46 SNR candidates that have been previously identified in the radio. We confirm eight of these candidates as SNRs based on evidence of linear polarization or through the calculation of nonthermal spectral indices. Additionally, we identify possible radio counterparts for seven SNR candidates that were previously only identified in X-rays (four) or optical (three). We also present six new SNRs and 37 new SNR candidates. The results of this study demonstrate the utility of ASKAP for discovering new and potential SNRs and refining the classification of previously identified candidates. In particular, we find that the EMU and POSSUM surveys are particularly well suited for observing high-latitude SNRs and confirming SNR candidates with polarization. The region studied in this work represents approximately one-quarter of the Galactic plane, by longitude, that will eventually be surveyed by EMU/POSSUM, and we expect that the ongoing surveys will continue to uncover new SNRs and SNR candidates. |
| format | Article |
| id | doaj-art-e982b808b4ff4e4ab450ae9396acba06 |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-e982b808b4ff4e4ab450ae9396acba062025-08-20T03:11:42ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198817510.3847/1538-4357/addc63A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I.B. D. Ball0https://orcid.org/0009-0003-2088-9433R. Kothes1https://orcid.org/0000-0001-5953-0100E. Rosolowsky2https://orcid.org/0000-0002-5204-2259C. Burger-Scheidlin3https://orcid.org/0000-0002-7239-2248M. D. Filipović4https://orcid.org/0000-0002-4990-9288S. Lazarević5https://orcid.org/0000-0001-6109-8548Z. J. Smeaton6https://orcid.org/0009-0009-7061-0553W. Becker7https://orcid.org/0000-0003-1173-6964E. Carretti8https://orcid.org/0000-0002-3973-8403B. M. Gaensler9https://orcid.org/0000-0002-3382-9558A. M. Hopkins10https://orcid.org/0000-0002-6097-2747D. Leahy11https://orcid.org/0000-0002-4814-958XM. Tahani12https://orcid.org/0000-0001-8749-1436J. L. West13https://orcid.org/0000-0001-7722-8458C. S. Anderson14https://orcid.org/0000-0002-6243-7879S. Loru15https://orcid.org/0000-0001-5126-1719Y. K. Ma16https://orcid.org/0000-0003-0742-2006N. M. McClure-Griffiths17https://orcid.org/0000-0003-2730-957XM. J. Michałowski18https://orcid.org/0000-0001-9033-4140Department of Physics, University of Alberta , Edmonton, Alberta, T6G 2E1, Canada ; bdball@ualberta.caDepartment of Physics, University of Alberta , Edmonton, Alberta, T6G 2E1, Canada ; bdball@ualberta.ca; Dominion Radio Astrophysical Observatory , Herzberg Astronomy & Astrophysics, National Research Council Canada, P.O. Box 248, Penticton, BC V2A 6J9, CanadaDepartment of Physics, University of Alberta , Edmonton, Alberta, T6G 2E1, Canada ; bdball@ualberta.caAstronomy & Astrophysics Section, School of Cosmic Physics, Dublin Institute for Advanced Studies , DIAS Dunsink Observatory, Dublin D15 XR2R, IrelandWestern Sydney University , Locked Bag 1797, Penrith South DC, NSW 2751, AustraliaWestern Sydney University , Locked Bag 1797, Penrith South DC, NSW 2751, Australia; CSIRO Space and Astronomy , Australia Telescope National Facility, PO Box 76, Epping, NSW 1710, Australia; Astronomical Observatory , Volgina 7, 11060 Belgrade, SerbiaWestern Sydney University , Locked Bag 1797, Penrith South DC, NSW 2751, AustraliaMax-Planck-Institut für extraterrestrische Physik , Giessenbachstraße, 85741 Garching, Germany; Max-Planck-Institut für Radioastronomie , Auf dem Hügel 69, 53121 Bonn, GermanyINAF – Istituto di Radioastronomia , Via Gobetti 101, 40129, Bologna, ItalyDepartment of Astronomy and Astrophysics, University of California Santa Cruz , 1156 High Street, Santa Cruz, CA 95064, USA; Dunlap Institute for Astronomy and Astrophysics, University of Toronto , 50 St George Street, Toronto, ON M5S 3H4, Canada; David A. Dunlap Department of Astronomy and Astrophysics, University of Toronto , 50 St George Street, Toronto, ON M5S 3H4, CanadaSchool of Mathematical and Physical Sciences, 12 Wally’s Walk, Macquarie University , NSW 2109, AustraliaDepartment of Physics and Astronomy, University of Calgary , Calgary, Alberta, T2N 1N4, CanadaBanting and KIPAC Fellowships: Kavli Institute for Particle Astrophysics & Cosmology (KIPAC), Stanford University , Stanford, CA 94305, USADominion Radio Astrophysical Observatory , Herzberg Astronomy & Astrophysics, National Research Council Canada, P.O. Box 248, Penticton, BC V2A 6J9, CanadaResearch School of Astronomy & Astrophysics, The Australian National University , Canberra ACT 2611, AustraliaINAF – Osservatorio Astrofisico di Catania , Via Santa Sofia 78, 95123 Catania, ItalyResearch School of Astronomy & Astrophysics, The Australian National University , Canberra ACT 2611, AustraliaResearch School of Astronomy & Astrophysics, The Australian National University , Canberra ACT 2611, AustraliaAstronomical Observatory Institute, Faculty of Physics and Astronomy, Adam Mickiewicz University , ul. S loneczna 36, 60-286 Poznań, PolandWe use data from the Evolutionary Map of the Universe (EMU) and Polarization Sky Survey of the Universe’s Magnetism (POSSUM) radio southern sky surveys, conducted with the Australian Square Kilometre Array Pathfinder (ASKAP) to compile a catalog of Galactic supernova remnants (SNRs) and candidate SNRs within the region of 277 $\mathop{.}\limits^{\unicode{x000b0}}$ 5 ≤ ℓ ≤ 311 $\mathop{.}\limits^{\unicode{x000b0}}$ 7 Galactic longitude, ∣ b ∣ ≤ 5 $\mathop{.}\limits^{\unicode{x000b0}}$ 4 Galactic latitude, as well as an additional field along the Galactic plane, approximately 315 $\mathop{.}\limits^{\unicode{x000b0}}$ 5 ≤ ℓ ≤ 323 $\mathop{.}\limits^{\unicode{x000b0}}$ 0 Galactic longitude, −4.5 ≤ b ≤ 1.5 Galactic latitude. In the areas studied, there are 44 known SNRs and 46 SNR candidates that have been previously identified in the radio. We confirm eight of these candidates as SNRs based on evidence of linear polarization or through the calculation of nonthermal spectral indices. Additionally, we identify possible radio counterparts for seven SNR candidates that were previously only identified in X-rays (four) or optical (three). We also present six new SNRs and 37 new SNR candidates. The results of this study demonstrate the utility of ASKAP for discovering new and potential SNRs and refining the classification of previously identified candidates. In particular, we find that the EMU and POSSUM surveys are particularly well suited for observing high-latitude SNRs and confirming SNR candidates with polarization. The region studied in this work represents approximately one-quarter of the Galactic plane, by longitude, that will eventually be surveyed by EMU/POSSUM, and we expect that the ongoing surveys will continue to uncover new SNRs and SNR candidates.https://doi.org/10.3847/1538-4357/addc63Supernova remnantsGalactic radio sourcesRadio continuum emissionPolarimetryRadio source catalogsPulsar wind nebulae |
| spellingShingle | B. D. Ball R. Kothes E. Rosolowsky C. Burger-Scheidlin M. D. Filipović S. Lazarević Z. J. Smeaton W. Becker E. Carretti B. M. Gaensler A. M. Hopkins D. Leahy M. Tahani J. L. West C. S. Anderson S. Loru Y. K. Ma N. M. McClure-Griffiths M. J. Michałowski A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I. The Astrophysical Journal Supernova remnants Galactic radio sources Radio continuum emission Polarimetry Radio source catalogs Pulsar wind nebulae |
| title | A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I. |
| title_full | A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I. |
| title_fullStr | A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I. |
| title_full_unstemmed | A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I. |
| title_short | A Catalog of Galactic Supernova Remnants and Supernova Remnant Candidates from the EMU/POSSUM Radio Sky Surveys. I. |
| title_sort | catalog of galactic supernova remnants and supernova remnant candidates from the emu possum radio sky surveys i |
| topic | Supernova remnants Galactic radio sources Radio continuum emission Polarimetry Radio source catalogs Pulsar wind nebulae |
| url | https://doi.org/10.3847/1538-4357/addc63 |
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