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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">Dear Juniors,</span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="3" color="#212121"><span style="font-size: 12pt;"><br>
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</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">It is m</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">y</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"> pleasure
to announce this week's Scientific Fika.</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"> </span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">Join
us on</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"> </span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"><b>Friday </b></span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"><b>the</b></span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"><b> 7</b></span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="-1" color="black"><b><sup>th</sup></b></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"><b> of </b></span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"><b>October </b></span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"><b>at </b></span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"><b>16:00</b></span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"> for</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"> fika
and </span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">a great talk by Florian Kühnel, an expert on primordial black holes who's visiting us from Munich.</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"></span></font></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">Florian Kühnel</span></font></font></div>
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<div style="margin: 0px;"><span style="caret-color: rgb(33, 33, 33); color: rgb(33, 33, 33); font-family: "Calibri Light", "Helvetica Light", sans-serif; font-size: 20pt; text-align: start;">Aspects of Primordial Black Holes</span></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;"> </span></font><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"></font>
<div style="margin: 0px;"><span style="caret-color: rgb(33, 33, 33); color: rgb(33, 33, 33); font-family: "Calibri Light", "Helvetica Light", sans-serif; font-size: 13.333333015441895px;"><i><span style="font-size: 12pt;">Primordial black holes are black holes
that might have formed in the early Universe. Their masses potentially span a range from as low as the Planck scale up to many orders of magnitude above the solar mass. This, in particular, includes black holes with mass and spin comparable to those discovered
by LIGO/Virgo. These may well be primordial in nature, which could also be true for certain confirmed microlensing events in the planetary-mass range as well as for the seeds for the super-massive black holes in galactic centres. After a general introduction
to primordial black holes, I will discuss observational hints for their existence on multiple scales. I will highlight one particular PBH formation mechanism, which we recently developed, and which is not plagued by exponential fine-tuning like most other
scenarios. Here, primordial black hole formation is induced by confinement of heavy quarks. I will discuss phenomenological features of this new mechanism. If time permits, I will discuss an entirely new property of black holes which we recently discovered
-- vorticity.</span></i></span><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3"><span style="font-size: 12pt;"><i><br>
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<div style="font-family: Calibri, Helvetica, sans-serif, serif, EmojiFont;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">Place:
NORDITA Floor 6 - Room Mega (in-person only).</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;"><br>
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<div style="font-family: Calibri, Helvetica, sans-serif, serif, EmojiFont;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"><font size="3" color="black" style="font-family: "Calibri Light", "Helvetica Light", sans-serif, serif, EmojiFont;"><span style="font-size: 12pt;">Address: </span></font><font size="3" color="#202124" style="font-family: "Calibri Light", "Helvetica Light", sans-serif, serif, EmojiFont;"><span style="font-size: 12pt;">AlbaNova
University Center, Hannes Alfvéns väg 12</span></font></font></div>
<div style="font-family: Calibri, Helvetica, sans-serif, serif, EmojiFont;"><font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="3" color="black"><span style="font-size: 12pt;">Please
put this date in your calendar and come to discuss interesting science.</span></font></font></div>
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<font face="Calibri,Helvetica,sans-serif,serif,EmojiFont"><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;">We're looking forward to seeing you!</span></font><font face="Helvetica,Arial,sans-serif,serif,EmojiFont" size="2" color="#212121"><span style="font-size: 16px;"><br>
</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;">Nadia</span></font><font face="Calibri Light,Helvetica Light,sans-serif,serif,EmojiFont" size="2"><span style="font-size: 16px;">, Guilherme
and Nikki</span></font></font></div>
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