Mysterious odd radio circle near the large magellanic cloud – an intergalactic supernova remnant?-Reference-Cited by-同舟云学术

Mysterious odd radio circle near the large magellanic cloud – an intergalactic supernova remnant?

Published:2022-02-04 Issue:1 Volume:512 Page:265-284
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Filipović Miroslav D¹^ORCID,Payne J L¹^ORCID,Alsaberi R Z E¹^ORCID,Norris R P¹²^ORCID,Macgregor P J¹^ORCID,Rudnick L³^ORCID,Koribalski B S¹²^ORCID,Leahy D⁴^ORCID,Ducci L⁵⁶,Kothes R⁷,Andernach H⁸^ORCID,Barnes L¹,Bojičić I S¹,Bozzetto L M¹,Brose R⁹¹⁰,Collier J D¹¹¹^ORCID,Crawford E J¹^ORCID,Crocker R M¹²^ORCID,Dai S¹^ORCID,Galvin T J¹³^ORCID,Haberl F¹⁴,Heber U¹⁵,Hill T¹,Hopkins A M¹¹⁶,Hurley-Walker N¹³,Ingallinera A¹⁷^ORCID,Jarrett T¹¹⁸^ORCID,Kavanagh P J¹⁹^ORCID,Lenc E²^ORCID,Luken K J¹²^ORCID,Mackey D¹²^ORCID,Manojlović P¹,Maggi P²⁰,Maitra C¹⁴^ORCID,Pennock C M²¹^ORCID,Points S²²,Riggi S¹⁷^ORCID,Rowell G²³,Safi-Harb S²⁴,Sano H²⁵^ORCID,Sasaki M¹⁵^ORCID,Shabala S²⁶^ORCID,Stevens J²,van Loon J Th²¹,Tothill N F H¹,Umana G¹⁷,Urošević D²⁷²⁸,Velović V¹,Vernstrom T²^ORCID,West J L²⁹^ORCID,Wan Z³⁰^ORCID

Affiliation:

1. School of Science, Western Sydney University , Locked Bag 1797, Penrith South DC, NSW 2751, Australia

2. CSIRO Space & Astronomy , PO Box 76, Epping, NSW 1710, Australia

3. Minnesota Institute for Astrophysics, School of Physics and Astronomy, University of Minnesota , 116 Church Street SE, Minneapolis, MN 55455, USA

4. Department of Physics and Astronomy, University of Calgary , University of Calgary, Calgary, Alberta, T2N 1N4, Canada

5. Institut für Astronomie und Astrophysik, Kepler Center for Astro and Particle Physics, Universität Tübingen , Sand 1, D-72076 Tübingen, Germany

6. ISDC Data Center for Astrophysics, Université de Genève , 16 chemin d’Écogia, CH-1290 Versoix, Switzerland

7. Dominion Radio Astrophysical Observatory, Herzberg Astronomy and Astrophysics, National Research Council Canada , PO Box 248, Penticton, BC V2A 6J9, Canada

8. Departamento de Astronomía, DCNE, Universidad de Guanajuato, Cjón , de Jalisco s/n, Col. Valenciana, Guanajuato CP 36023, Gto., Mexico

9. Dublin Institute for Advanced Studies, Astronomy & Astrophysics Section , 31 Fitzwilliam Place, D02 XF86 Dublin 2, Ireland

10. University of Potsdam, Institute of Physics and Astronomy , D-14476 Potsdam, Germany

11. The Inter-University Institute for Data Intensive Astronomy (IDIA), Department of Astronomy, University of Cape Town , Rondebosch 7701, South Africa

12. Research School of Astronomy and Astrophysics, Australian National University , Canberra 2611, ACT, Australia

13. International Centre for Radio Astronomy Research, Curtin University , Bentley, WA 6102, Australia

14. Max-Planck-Institut für extraterrestrische Physik , Gießenbachstraße 1, D-85748 Garching, Germany

15. Remeis Observatory and ECAP, Universität Erlangen-Nürnberg , Sternwartstraße 7, D-96049 Bamberg, Germany

16. Australian Astronomical Optics, AAO-Macquarie, Faculty of Science and Engineering, Macquarie University , 105 Delhi Rd, North Ryde, NSW 2113, Australia

17. INAF – Osservatorio Astrofisico di Catania , via Santa Sofia 78, I-95123 Catania, Italia

18. Department of Astronomy, University of Cape Town , Private Bag X3, Rondebosch 7701, South Africa

19. School of Cosmic Physics, Dublin Institute for Advanced Studies , 31 Fitzwilliam Place, Dublin 2, Ireland

20. Observatoire Astronomique de Strasbourg, Université de Strasbourg , CNRS, 11 rue de l’Université, F-67000 Strasbourg, France

21. Lennard-Jones Laboratories, Keele University , Staffordshire ST5 5BG, UK

22. Cerro Tololo Inter-American Observatory/NSF’s NOIRLab , Casilla 603, La Serena, Chile

23. School of Physical Sciences, The University of Adelaide , Adelaide 5005, Australia

24. Department of Physics and Astronomy, University of Manitoba , Winnipeg, MB R3T 2N2, Canada

25. National Astronomical Observatory of Japan , Mitaka, Tokyo 181-8588, Japan

26. School of Natural Sciences, University of Tasmania , Private Bag 37, Hobart 7001, Australia

27. Department of Astronomy, Faculty of Mathematics, University of Belgrade , Studentski trg 16, 11000 Belgrade, Serbia

28. Isaac Newton Institute of Chile , Yugoslavia Branch

29. Dunlap Institute for Astronomy and Astrophysics, University of Toronto , Toronto, ON M5S 3H4, Canada

30. Sydney Institute for Astronomy, School of Physics, The University of Sydney , Sydney, New South Wales, Australia

Abstract

ABSTRACT We report the discovery of J0624–6948, a low-surface brightness radio ring, lying between the Galactic Plane and the large magellanic cloud (LMC). It was first detected at 888 MHz with the Australian Square Kilometre Array Pathfinder (ASKAP), and with a diameter of ∼196 arcsec. This source has phenomenological similarities to odd radio circles (ORCs). Significant differences to the known ORCs – a flatter radio spectral index, the lack of a prominent central galaxy as a possible host, and larger apparent size – suggest that J0624–6948 may be a different type of object. We argue that the most plausible explanation for J0624–6948 is an intergalactic supernova remnant due to a star that resided in the LMC outskirts that had undergone a single-degenerate type Ia supernova, and we are seeing its remnant expand into a rarefied, intergalactic environment. We also examine if a massive star or a white dwarf binary ejected from either galaxy could be the supernova progenitor. Finally, we consider several other hypotheses for the nature of the object, including the jets of an active galactic nucleus (30Dor) or the remnant of a nearby stellar super-flare.

Funder

Commonwealth Scientific and Industrial Research Organisation

Science and Industry Endowment Fund

Jet Propulsion Laboratory

California Institute of Technology

National Aeronautics and Space Administration

Universidad de Guanajuato

Irish Research Council

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics