| Autor: |
Healy, F., Brien, T. J. O, Beswick, R., Avison, A., Argo, M. K. |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Monthly Notices of the Royal Astronomical Society, Volume 469, Issue 4, 21 August 2017, Pages 3976 to 3983 |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1093/mnras/stx1087 |
| Popis: |
V959 Mon (Nova Mon 2012) was first detected by the Fermi Large Area Telescope in June 2012, as a transient gamma-ray source. Subsequent optical observations showed that this gamma-ray emission was due to a classical nova explosion. Multi-frequency observations of V959 Mon with the VLA between June and September 2012 revealed dramatic brightening, and a spectrum that steepened with increasing frequency. High resolution radio images of V959 Mon using e-MERLIN are presented here, at six epochs between September 2012 and February 2014 which show morphological evolution of the source. While early e-MERLIN observations of V959 Mon show an east-west elonga- tion in the ejecta morphology, subsequent observations suggest that the ejecta become elongated in the north-south direction. Our high-resolution observations of this sur- prising evolution in the structure of V959 Mon can assist us in further understanding the behaviour and morphology of nova ejecta. |
| Databáze: |
arXiv |
| Externí odkaz: |
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