<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear all,<br class=""><br class="">The next SU astronomy departmental seminar will take place on <b class="">Friday January 20th at 10:30 in room FC 61</b> (AlbaNova building, 6th floor) <b class="">and on zoom.<br class=""></b><br class="">———————————<div class=""><div class=""><b class="">Speaker: Smaranika Banerjee</b><br class=""><b class="">Title: Early kilonova from neutron star merger</b><br class=""><a href="https://www.albanova.se/event/early-kilonova-from-neutron-star-merger/" class="">https://www.albanova.se/event/early-kilonova-from-neutron-star-merger/</a></div><div class=""><br class="">Abstract:<br class="">In binary neutron star (BNS) mergers, the radioactive decay of freshly synthesized heavy elements produces emissions in the ultraviolet-optical-infrared range, giving rise to a transient called a kilonova. The kilonova is an excellent probe to understand the origin of elements heavier than iron. The observational properties of the kilonova (light curve and spectra) depend on the bound-bound opacity of the heavy elements. Hence, a detailed opacity is necessary to model the realistic kilonova light curve and spectra. However, such calculations for opacity, and correspondingly, the realistic light curve, were largely unavailable, especially for the condition suitable at an early time (t < 1 day).<br class="">In my talk, I will discuss recent developments and challenges in modelling kilonova light curves. Also, I will share my recent work on opacity and light curve calculations of the kilonova, focusing on early time (t < 1 day).<div class="">———————————</div><div class=""><div class=""><br class="">We look forward to seeing many of you there. Thanks!<br class=""><br class="">Eliot and Kris<br class=""><br class=""><br class=""><br class="">Upcoming Events:<br class=""><br class="">2023-01-27<span class="Apple-tab-span" style="white-space:pre"> </span>Mingjie Jian (SU)<br class="">2023-02-03<span class="Apple-tab-span" style="white-space:pre"> </span>Kelley Hess (IAA - Granada, Spain)</div><div class="">2023-02-10<span class="Apple-tab-span" style="white-space:pre"> </span>No seminar - OKC day</div><div class="">2023-02-17<span class="Apple-tab-span" style="white-space:pre"> </span>Diane Feuillet (Lund Obs.)<br class=""><br class=""><br class="">———————————</div><div class="">Topic: Astronomy Department Seminar Smaranika Banerjee<br class="">Time: Jan 20th, 2023 10:30 AM Stockholm<br class=""><br class="">Join Zoom Meeting:<br class=""><a href="https://stockholmuniversity.zoom.us/s/61002076352" class="">https://stockholmuniversity.zoom.us/s/61002076352</a></div><div class="">Meeting ID: 610 0207 6352</div></div></div></div></body></html>