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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">Dear Juniors,</span></font><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><br>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;">It is my pleasure to announce this week's ScientiFika.</span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"> Join
us</span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"> on Friday</span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><b> the 23</b></span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="-1"><b><sup>rd</sup></b></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><b> </b></span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><b>of </b></span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><b>February</b></span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><b> at</b></span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><b> 1</b></span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><b>6:00</b></span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"> for
delicious Swedish pastries and </span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;">an interesting talk by</span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"> Seán
Brennan, </span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="2" color="black"><span style="font-size: 16px;">a postdoc at the astronomy department, about early supernova activity.</span></font></span></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="2" color="black"><span style="font-size: 16px;"><b>We're looking for someone to join the ScientiFika
organisation committee!</b></span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="2" color="black"><span style="font-size: 16px;"> Reply to this message if you're interested or would like more information. Deadline: March 15.</span></font></span></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="2" color="black"><span style="font-size: 16px;"><span style="font-family: Helvetica, Arial, sans-serif, serif, EmojiFont; font-size: 16px;">Seán
Brennan</span></span></font></span></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"> </span></font></span></font></div>
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<span style="font-size: 18pt;">Early Warning Signs: </span><br>
<span style="font-size: 18pt;">Precursor Activity Preceding Supernova</span></p>
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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.</p>
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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.</p>
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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.</p>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">Address: </span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">AlbaNova
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</span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">Nadia</span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">, Guilherme
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