Evans, A ORCID: https://orcid.org/0000-0002-3142-8953, Pimpanuwat, B, Richards, A, Banrejee, D, Gray, M, Hutawarakorn Kramer, B and Kraus, A (2022) Stringent limits on 28SiO maser emission from the recurrent nova T Coronae Borealis. Monthly Notices of the Royal Astronomical Society. (In Press)

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Abstract

There are indications that the third known eruption of the recurrent nova T CrB is imminent, and multi-wavelength observations prior to the eruption are important to characterise the system before it erupts. T CrB is known to display the SiO fundamental vibrational feature at 8 µm. When the anticipated eruption occurs, it is possible that the shock produced when the ejected material runs into the wind of the red giant in the system may be traced using SiO maser emission. We have used the 100 m Effelsberg Radio Telescope to search for 28SiO emission in the υ = 1, υ = 2, J = 1 → 0 transitions, at 43.122 GHz and 42.820 GHz respectively, while the system is in quiescence. We find no evidence for such emission. We set stringent 3σ upper limits of 1.66 mJy on emission in the υ = 1, J = 1 → 0 transition, and 1.72 mJy in the υ = 2, J = 1 → 0 transition, respectively, for a noise bandwith of 250 kHz. The corresponding limits for a 31.25 kHz bandwidth are 4.69 mJy and 4.86 mJy respectively. These upper limits improve on previous upper limits for this system by more than two orders of magnitude.

Item Type: Article
Additional Information: The final version of this article and all relevant information related to it, including copyrights, can be found on the publisher website.
Subjects: Q Science > Q Science (General)
Q Science > QB Astronomy
Q Science > QB Astronomy > QB600 Planets. Planetology
Q Science > QC Physics
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Depositing User: Symplectic
Date Deposited: 08 Jun 2022 10:05
Last Modified: 08 Jun 2022 10:05
URI: https://eprints.keele.ac.uk/id/eprint/11006

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