[Drand] ScientiFika 23/02 – Seán Brennan - 'Early Warning Signs: Precursor Activity Preceding Supernova'

[Nikki Arendse]

Dear Juniors, this is a reminder of the ScientiFika today at 16:00 at Nordita. Seán Brennan will talk about early supernova activity.

We're looking for someone to join the ScientiFika organisation committee! Reply to this message if you're interested or would like more information. Deadline: March 15.

Place: NORDITA Floor 6 - Fika area (in-person only).
Address: AlbaNova University Center, Hannes Alfvéns väg 12

We hope to see you there!
Nadia, Guilherme and Nikki

________________________________
From: scientific-fika.nordita-at-su.se <scientific-fika.nordita-at-su.se-bounces at lists.su.se> on behalf of Nikki Arendse <nikki.arendse at fysik.su.se>
Sent: 19 February 2024 09:56:07
To: scientific-fika.nordita at su.se; drand at fysik.su.se; student at fysik.su.se
Subject: [Scientific fika] ScientiFika 23/02 – Seán Brennan - 'Early Warning Signs: Precursor Activity Preceding Supernova'


Dear Juniors,

It is my pleasure to announce this week's ScientiFika. Join us on Friday the 23rd of February at 16:00 for delicious Swedish pastries and an interesting talk by Seán Brennan, a postdoc at the astronomy department, about early supernova activity.

We're looking for someone to join the ScientiFika organisation committee! Reply to this message if you're interested or would like more information. Deadline: March 15.


Seán Brennan


Early Warning Signs:
Precursor Activity Preceding Supernova


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.


Place: NORDITA Floor 6 - Fika area (in-person only).
Address: AlbaNova University Center, Hannes Alfvéns väg 12

We're looking forward to seeing you!
Nadia, Guilherme and Nikki

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