ATCA study of Small Magellanic Cloud supernova remnant 1E 0102.2

ATCA study of Small Magellanic Cloud supernova remnant 1E 0102.2–7219

Published:2023-10-27 Issue:1 Volume:527 Page:1444-1460
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Alsaberi Rami Z E¹^ORCID,Filipović M D¹,Dai S¹²^ORCID,Sano H³⁴,Kothes R⁵,Payne J L¹,Bozzetto L M¹,Brose R⁶^ORCID,Collischon C⁷,Crawford E J¹^ORCID,Haberl F⁸^ORCID,Hill T¹,Kavanagh P J⁹^ORCID,Knies J⁷,Leahy D¹⁰^ORCID,Macgregor P J¹²^ORCID,Maggi P¹¹,Maitra C⁸^ORCID,Manojlović P¹²,Martín S¹²¹³,Matthew C¹,Ralph N O¹,Rowell G¹⁴,Ruiter A J¹⁵^ORCID,Sasaki M⁷^ORCID,Seitenzahl I R¹⁵^ORCID,Tokuda K¹⁶¹⁷¹⁸,Tothill N F H¹,Urošević D¹⁹²⁰^ORCID,van Loon J Th²¹,Velović V¹,Vogt F P A²²^ORCID

Affiliation:

1. Western Sydney University , Locked Bag 1797, Penrith, NSW 2751 , Australia

2. CSIRO Astronomy and Space Sciences, Australia Telescope National Facility , PO Box 76, Epping, NSW 1710 , Australia

3. Faculty of Engineering, Gifu University , 1–1 Yanagido, Gifu 501–1193 , Japan

4. National Astronomical Observatory of Japan , Mitaka, Tokyo 181–8588 , Japan

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

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

7. Dr Karl Remeis Observatory, Erlangen Centre for Astroparticle Physics, Friedrich-Alexander University Erlangen-Nürnberg , Sternwartstr. 7, D-96049 Bamberg , Germany

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

9. School of Cosmic Physics, Dublin Institute for Advanced Studies , 31 Fitzwillam Place, Dublin 2 , Ireland

10. Department of Physics and Astronomy, University of Calgary, University of Calgary , Calgary, AB T2N 1N4 , Canada

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

12. European Southern Observatory , Alonso de Córdova 3107, Vitacura 763 0355, Santiago , Chile

13. Joint ALMA Observatory , Alonso de Córdova 3107, Vitacura 763 0355, Santiago , Chile

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

15. School of Science, University of New South Wales , Australian Defence Force Academy, Canberra, ACT 2600 , Australia

16. Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University , Nishi-ku, Fukuoka 819–0395 , Japan

17. National Astronomical Observatory of Japan, National Institutes of Natural Sciences , 2-21-1 Osawa, Mitaka, Tokyo 181–8588 , Japan

18. Department of Physics, Graduate School of Science, Osaka Metropolitan University , 1–1 Gakuen-cho, Naka-ku, Sakai, Osaka 599–8531 , Japan

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

20. Isaac Newton Institute of Chile , Yugoslavia Branch

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

22. Federal Office of Meteorology and Climatology—MeteoSwiss , Chemin de l’Aérologie 1, CH-1530 Payerne , Switzerland

Abstract

ABSTRACT We present new and archival Australia Telescope Compact Array and Atacama Large Millimeter/submillimeter Array data of the Small Magellanic Cloud supernova remnant 1E 0102.2–7219 at 2100, 5500, 9000, and 108 000 MHz; as well as H i data provided by the Australian Square Kilometre Array Pathfinder. The remnant shows a ring-like morphology with a mean radius of 6.2 pc. The 5500 MHz image reveals a bridge-like structure, seen for the first time in a radio image. This structure is also visible in both optical and X-ray images. In the 9000 MHz image, we detect a central feature that has a flux density of 4.3 mJy but rule out a pulsar wind nebula origin, due to the lack of significant polarization towards the central feature with an upper limit of 4 per cent. The mean fractional polarization for 1E 0102.2–7219 is 7 ± 1 and 12 ± 2 per cent for 5500 and 9000 MHz, respectively. The spectral index for the entire remnant is −0.61 ± 0.01. We estimate the line-of-sight magnetic field strength in the direction of 1E 0102.2–7219 of ∼44 µG with an equipartition field of $65\pm 5\, \mu$G. This latter model uses the minimum energy of the sum of the magnetic field and cosmic ray electrons only. We detect an H i cloud towards this remnant at the velocity range of ∼160–180 km s−1 and a cavity-like structure at the velocity of 163.7–167.6 km s−1. We do not detect CO emission towards 1E 0102.2–7219.

Funder

Japan Society for the Promotion of Science

Australian Research Council

Deutsche Forschungsgemeinschaft

Studienstiftung des Deutschen Volkes

NAOJ

Ministry of Education, Science and Technological Development of the Republic of Serbia

Bulgarian Academy of Sciences

Irish Research Council

Publisher

Oxford University Press (OUP)

Subject