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 ± 5 μG. 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.
Original language | English |
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Pages (from-to) | 1444-1460 |
Number of pages | 17 |
Journal | Monthly Notices of the Royal Astronomical Society |
Volume | 527 |
Issue number | 1 |
DOIs | |
Publication status | Published - 1 Jan 2024 |
Open Access - Access Right Statement
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly citedFingerprint
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ATCA Study of Small Magellanic Cloud Supernova Remnant 1E 0102.2-7219
Alsaberi, R. Z. E., Filipovic, M., Dai, S., Sano, H., Kothes, R., Payne, J., Bozzetto, L., Brose, R., Collischon, E. J., Crawford, E., Haberl, F., Hill, T., Kavanagh-Patel, J., Knies, J., Leahy, D., Macgregor, P., Maggi, P., Maitra, C., Manojlovic, P., Matthews, C., Ralph, N., Rowell, G., Ruiter, A. J., Sasaki, M., Seitenzahl, I. R., Tokuda, K., Tothill, N., Uresovic, D., van Loon, J., Velovic, V. & Vogt, F. P. A., arXiv, 25 Oct 2023
DOI: 10.48550/arXiv.2310.16533, https://doi.org/10.48550/arXiv.2310.16533 and one more link, https://research-data.westernsydney.edu.au/published/58305dd0d75911eea1d643e149c78efd/ (show fewer)
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