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Pelisoli, I. orcid.org/0000-0003-4615-6556, Marsh, T.R., Buckley, D.A.H. orcid.org/0000-0002-7004-9956 et al. (19 more authors) (2023) A 5.3-min-period pulsing white dwarf in a binary detected from radio to X-rays. Nature Astronomy, 7 (8). pp. 931-942. ISSN 2397-3366
Abstract
White dwarf stars are the most common stellar fossils. When in binaries, they make up the dominant form of compact object binary within the Galaxy and can offer insight into different aspects of binary formation and evolution. One of the most remarkable white dwarf binary systems identified to date is AR Scorpii (AR Sco). AR Sco is composed of an M dwarf star and a rapidly spinning white dwarf in a 3.56 h orbit. It shows pulsed emission with a period of 1.97 min over a broad range of wavelengths, which led to it being known as a white dwarf pulsar. Both the pulse mechanism and the evolutionary origin of AR Sco provide challenges to theoretical models. Here we report the discovery of a sibling of AR Sco, J191213.72-441045.1, which harbours a white dwarf in a 4.03 h orbit with an M dwarf and exhibits pulsed emission with a period of 5.30 min. This discovery establishes binary white dwarf pulsars as a class and provides support for proposed formation models for white dwarf pulsars.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Author(s), under exclusive licence to Springer Nature Limited. This is an author-produced version of a paper subsequently published in Nature Astronomy. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Astrophysical magnetic fields; Compact astrophysical objects; Stars; Stellar evolution; Time-domain astronomy |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/V000853/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 20 Jul 2023 11:24 |
Last Modified: | 04 Oct 2024 10:38 |
Status: | Published |
Publisher: | Springer Science and Business Media LLC |
Refereed: | Yes |
Identification Number: | 10.1038/s41550-023-01995-x |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:201739 |
Available Versions of this Item
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A 5.3-minute-period pulsing white dwarf in a binary detected from radio to X-rays. (deposited 20 Jul 2023 11:13)
- A 5.3-min-period pulsing white dwarf in a binary detected from radio to X-rays. (deposited 20 Jul 2023 11:24) [Currently Displayed]