Discovery of a putative supernova remnant around the long-period X-ray pulsar SXP 1323 in the Small Magellanic Cloud
- We report the discovery of a circular shell centred on the Be X-ray binary (BeXB) SXP 1323 in the Small Magellanic Cloud. The shell was detected in an H α image obtained with the Very Large Telescope. Follow-up spectroscopy with the Southern African Large Telescope showed that the shell expands with a velocity of ≈100kms−1 and that its emission is due to shock excitation. We suggest that this shell is a remnant of the supernova explosion that led to the formation of SXP 1323’s neutron star ≈40000 yr ago. SXP 1323 represents the second known case of a BeXB associated with a supernova remnant (the first one is SXP 1062). Interestingly, both of these BeXBs harbour long-period pulsars and are located in a low-metallicity galaxy.
| Author details: | V. V. Gvaramadze, Alexei Y. KniazevORCiD, Lida OskinovaORCiDGND |
|---|---|
| DOI: | https://doi.org/10.1093/mnrasl/slz018 |
| ISSN: | 0035-8711 |
| ISSN: | 1365-2966 |
| Title of parent work (English): | Monthly notices of the Royal Astronomical Society |
| Publisher: | Oxford Univ. Press |
| Place of publishing: | Oxford |
| Publication type: | Article |
| Language: | English |
| Date of first publication: | 2019/02/26 |
| Publication year: | 2019 |
| Release date: | 2021/02/15 |
| Tag: | ISM: supernova remnants; X-rays: binaries; X-rays: individual: SXP 1323; stars: emission-line, Be; stars: individual: [MA93] 1393; stars: massive |
| Volume: | 485 |
| Issue: | 1 |
| Number of pages: | 5 |
| First page: | L6 |
| Last Page: | L10 |
| Funding institution: | Southern African Large Telescope (SALT) [2010-1-RSA-OTH-001, 2018-1-MLT-008]; Russian Foundation for Basic Research grantRussian Foundation for Basic Research (RFBR) [19-02-00779]; National Research Foundation (NRF) of South AfricaNational Research Foundation - South Africa; Russian Government Program of Competitive Growth of Kazan Federal University |
| Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
| DDC classification: | 5 Naturwissenschaften und Mathematik / 52 Astronomie / 520 Astronomie und zugeordnete Wissenschaften |
| Peer review: | Referiert |
| Publishing method: | Open Access / Green Open-Access |
