[Okc-wp4] EO seminar 14th at 13:15 A5:1003

[Haakon Andresen]

Dear everyone,

This week Seán Brennan will talk about supernova precursor signals.

When: 13:15 Thursday 14th of March
Where: A5:1003

Speaker: Seán Brennan
Title: Early Warning Signs: Precursor Activity Preceding Supernova
Abstract: Core-collapse supernovae are generally observed after the massive star has been destroyed,
with information about the progenitor star inferred indirectly from the appearance and evolution of
the supernova. Over the last decade, researchers have identified energetic activity at the locations of
supernova explosions in the years leading up to core collapse in historical archives.
These events are typically attributed to the massive progenitor star undergoing
some form of activity via currently unknown mechanisms.

One challenge when observing these precursor events is the uncertainty surrounding when or if
the actual supernova explosion will occur. This uncertainty often makes us hesitant to allocate valuable telescope time.

In this talk, I will present a growing sample of objects that demonstrate that some massive stars
exhibit variability weeks to months before their final supernova. Through this work, we may be able to
obtain advance warning of an impending supernova, allowing for high-reward observations and, to some extent,
the ability to predict the final death of a massive star.

Best,
Haakon (on behalf of the organizers)


PS: If anyone wish to join on zoom https://stockholmuniversity.zoom.us/j/3575421837



-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.su.se/pipermail/okc-wp4-at-fysik.su.se/attachments/20240312/12679ca9/attachment.html>