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<p>Dear colleagues, <br>
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our next EO meeting will take place this Thursday Oct 22 at 13:15 via Zoom. <br>
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<div>The meeting will be online. To join access <a href="https://stockholmuniversity.zoom.us/j/61161537684" class="OWAAutoLink" id="LPlnk385248" previewremoved="true">
https://stockholmuniversity.zoom.us/j/61161537684</a><font size="3" face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="black"><span style="font-size:12pt;" id="divtagdefaultwrapper"><br>
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<div><font size="3" face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="black"><span style="font-size:12pt;" id="divtagdefaultwrapper">You will be able to enter the meeting room from 13:00.</span></font><font size="3" face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="black"><span style="font-size:12pt;" id="divtagdefaultwrapper">
See below for other methods to participate. </span></font></div>
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<div style="margin-top:0;margin-bottom:0;"><font size="3" face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="black"><span style="font-size:12pt;" id="divtagdefaultwrapper"><font size="3" face="Calibri,Helvetica,sans-serif,serif,EmojiFont" color="black"><span style="font-size:12pt;" id="divtagdefaultwrapper">This
week </span></font><b>Lorenzo Nativi </b>from Stockholm Univrsity will present</span></font><br>
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<p><font size="2"><span style="font-size:10pt;"><span style="font-size: 12pt;">Title:</span>
<span style="font-size: 12pt;">Can jets make radioactively-powered emission from neutron star mergers bluer?</span><br>
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<span style="font-size: 12pt;">Abstract:</span> <br>
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<p><font size="2"><span style="font-size:10pt;"><span style="font-size: 12pt;">Besides being sources of gravitational waves, neutron star mergers eject neutron-rich material suitable for the production of heavy r-process nuclei. The radioactive decay of these
freshly synthesised elements powers a rapidly evolving thermal transient (named "macronova" or "kilonova"), whose spectral properties strongly depend on the ejecta composition. In particular, the high opacities associated to the heaviest nuclei powers a transient
peaking in the red-infrared bands over time scales of weeks.</span><br>
<span style="font-size: 12pt;">The first detection of a binary neutron star merger was also accompanied by the detection of a relativistic jet. Despite being ascertained the presence of two dynamical components, mildly-relativistic ejecta and ultra-relativistic
outflow, the observational consequences of the interplay between the two is still unclear.</span><br>
<span style="font-size: 12pt;">In this talk I will discuss the consequences of jet propagation on the radioactively powered transient, by simulating the interaction with dedicated special-relativistic hydrodynamics simulations. Firstly, I will present the observational
evidence of the two dynamical components. Second, I will discuss the simulations setup focusing on the initial ejecta distribution as obtained from previous dedicated works. Lastly, I will show how a relativistic jet can "punch-away" a fraction of high-opacity
material before the brightening of the macronova, resulting in the transient getting brighter and bluer for on-axis observers in the first few days.</span></span></font></p>
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<div><span style="font-size: 12pt;">Andre da Silva Schneider is inviting you to a scheduled Zoom meeting.</span><br>
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<span style="font-size: 12pt;">Topic: EO Meeting</span><br>
<span style="font-size: 12pt;">Time: Oct 22, 2020 01:00 PM Stockholm</span><br>
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<span style="font-size: 12pt;">Join Zoom Meeting</span><br>
<span style="font-size: 12pt;">https://stockholmuniversity.zoom.us/j/61161537684</span><br>
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<span style="font-size: 12pt;">Meeting ID: 611 6153 7684</span><br>
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<span style="font-size: 12pt;">+46844682488,,61161537684# Sweden</span><br>
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<span style="font-size: 12pt;">Dial by your location</span><br>
<span style="font-size: 12pt;"> +46 8 4468 2488 Sweden</span><br>
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<span style="font-size: 12pt;">Meeting ID: 611 6153 7684</span><br>
<span style="font-size: 12pt;">Find your local number: https://stockholmuniversity.zoom.us/u/cdoda3w2Mr</span><br>
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<span style="font-size: 12pt;">Join by SIP</span><br>
<span style="font-size: 12pt;">61161537684@109.105.112.236</span><br>
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<span style="font-size: 12pt;">Join by H.323</span><br>
<span style="font-size: 12pt;">109.105.112.236</span><br>
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<span style="font-size: 12pt;">Meeting ID: 611 6153 7684</span><br>
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<span style="font-size: 12pt;">Join by Skype for Business</span><br>
<span style="font-size: 12pt;">https://stockholmuniversity.zoom.us/skype/61161537684</span><br>
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<p style="font-size:16px; font-family:Calibri,Helvetica,sans-serif">---------------------------------</p>
<p style="font-size:16px; font-family:Calibri,Helvetica,sans-serif">André da Silva Schneider<br>
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<p style="font-size:16px; font-family:Calibri,Helvetica,sans-serif"><span style="font-size:10pt; font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont">Department of Astronomy</span><br>
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<p style="font-size:16px; font-family:Calibri,Helvetica,sans-serif"><span style="font-family:Calibri,Helvetica,sans-serif,serif,EmojiFont"><span style="font-size:10pt">Stockholm University</span></span></p>
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