Transition radiation in dusty novae with non-thermal radio emission

Evans, A

Abstract

Transition radiation is produced when a relativistic charged particle enters or leaves a solid medium. The electrons that produce synchrotron radiation may interact with the dust in circumstellar environments, leading to the emission of transition radiation. We explore the production of transition radiation in dusty novae that also display synchrotron radiation emission. Transition radiation is emitted in the hard ultraviolet/X-ray range. We suggest that, even when the transition radiation is not itself directly observable, it may have a role in determining the ionisation balance of, and grain heating in, nova ejecta. Furthermore, it may be important in other dusty environments (such as supernova remnants) with non-thermal radio emission.

Citation

Evans, A. (2025). Transition radiation in dusty novae with non-thermal radio emission. Monthly Notices of the Royal Astronomical Society, 541(4), 3214-3219. https://doi.org/10.1093/mnras/staf1175

• Journal Article Type: Article
• Acceptance Date: Jul 15, 2025
• Online Publication Date: Jul 17, 2025
• Publication Date: 2025-08
• Deposit Date: Aug 4, 2025
• Journal: Monthly Notices of the Royal Astronomical Society
• Print ISSN: 0035-8711
• Electronic ISSN: 1365-2966
• Publisher: Oxford University Press
• Peer Reviewed: Peer Reviewed
• Volume: 541
• Issue: 4
• Pages: 3214-3219
• DOI: https://doi.org/10.1093/mnras/staf1175
• Keywords: circumstellar matter, novae, cataclysmic variables, radiation mechanisms: general
• Public URL: https://keele-repository.worktribe.com/output/1362795
• Publisher URL: https://academic.oup.com/mnras/article/541/4/3214/8205641