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Tagged: T CrB recurrent nova CV
- This topic has 88 replies, 21 voices, and was last updated 7 hours, 23 minutes ago by Jeremy Shears.
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30 December 2024 at 8:42 am #627289Bill BartonParticipant
Now in the national news.
30 December 2024 at 3:22 pm #627295Jeremy ShearsParticipantMichael Woodman was interviewed on the BBC World Service news this morning about his discovery of the 1946 eruption of T CrB.
I have invited him to attend the January BAA meeting to receive the Charles Butterworth award of the VSS.
31 December 2024 at 8:29 am #627315Jeremy ShearsParticipantAnd on the BBC 10 o’clock news last night.
7 January 2025 at 10:02 am #627430Jeremy ShearsParticipantAn A&A preprint on ArXiv today discusses the recent super-active phase SAP of T CrB.
The SAP lasted between 2015 and 2023, during which T was about three-quarters of a magnitude brighter than normal. A similar SAP was observed prior to the 1946 eruption.
The authors find that the SAP was triggered in the inner part of the accretion disc, increasing the disc temperature and the mass accretion rate at the white dwarf surface. The higher temperature should have further enhanced the mass transfer and sustained the SAP.
The SAP abruptly stopped in 2023, implying that the disc has returned to a quiet phase. At this time accretion dropped to a very low level. Recently T has been gradually brightening again and accretion has picked up. Note that when sufficient material has accumulated on the surface of the white dwarf, it triggers the thermonuclear runaway that appears as a nova eruption.
- This reply was modified 2 weeks, 3 days ago by Jeremy Shears.
20 January 2025 at 11:21 am #627702Jeremy ShearsParticipantMichael Woodman, who independently discovered the 1946 eruption of T CrB as a 15-year old schoolboy in 1946, was guest of honour at the BAA meeting on January 18. He was presented with the BAA VSS Charles Butterworth Award.
Many thanks to all those present who helped to make it as special day for Michael and his family.
A photo of Michael (taken by Philip Jennings) is attached.
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20 January 2025 at 10:14 pm #627761Alex PrattParticipantJeremy,
It was very pleasing that Michael and his family could attend the meeting on Saturday, and I saw how much they enjoyed your presentation – ‘British Independent Discoveries of the 1946 Eruption of T Coronae Borealis’.
Alex.
21 January 2025 at 9:09 pm #627781Michael O’ConnellParticipantI watched the meeting online.
Very nice presentation Jeremy. Well done!22 January 2025 at 8:35 am #627787Andy WilsonKeymasterIt was fantastic to see Michael Woodman in person, and really great that many members of his family were able to attend the presentation of his Butterworth Award.
24 January 2025 at 10:18 am #627823Jeremy ShearsParticipantIn answer to a question following my talk on T CrB, I mentioned that some had predicted that the neutrino burst from the eruption might just be detectable on Earth. However, a pre-print on ArXiv today suggests that the burst might actually be too weak for such a detection.
As ever, time will tell.
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