<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 Colleagues,<div class=""><br class=""></div><div class="">It is my pleasure to advertise the following seminar, that will be held remotely.</div><div class=""><br class=""></div><div class=""><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class="">——————————</div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class="">Mercoledi 12 Gennaio alle 16:00</div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class=""><br class=""></div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class="">Dominik Schneider</div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class="">Università di Conception, Cile</div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class=""><br class=""></div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class="">Title: Formation of the first supermassive black holes</div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class=""><br class=""></div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class="">Abstract:</div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class="">For the origin of the first supermassive black holes in the Universe, different scenarios have been proposed, ranging from the direct collapse of massive gas clouds into one single object, run-away collisions in very dense stellar clusters, as well as accretion of initially stellar-mass black holes. In this talk I will present progress from the last several years in these different scenarios, starting with systematic tests of the direct collapse scenario and the conditions under which it is feasible. I will also discuss the possibility to have purely collison-based scenarios and their possible problems. Finally, I will present a new mixed scenario where the formation of a massive object is due to the interplay of collisions and accretions, including new results from recent numerical simulations.</div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class=""><div style="font-family: Helvetica; font-size: 13px;" class=""><br class=""></div><div style="font-family: Helvetica; font-size: 13px;" class=""><a href="https://uniroma1.zoom.us/j/81122901013?pwd=M1hnRHRXZkEyeW1QMFlPQ2FXa0dNZz09#success" class="">https://uniroma1.zoom.us/j/81122901013?pwd=M1hnRHRXZkEyeW1QMFlPQ2FXa0dNZz09#success</a></div><div style="font-family: Helvetica; font-size: 13px;" class=""><br class=""></div><div style="font-family: Helvetica; font-size: 13px;" class=""><div style="box-sizing: border-box; font-variant-ligatures: none; margin: 0px; outline: none; position: relative; text-decoration-line: inherit; text-decoration-thickness: initial; font-family: "Open Sans", sans-serif; line-height: 1.75; padding-top: 0px; orphans: 2; white-space: pre-wrap; widows: 2;" class="">Meeting ID: 81122901013</div><div style="box-sizing: border-box; font-variant-ligatures: none; margin: 0px; outline: none; position: relative; text-decoration-line: inherit; text-decoration-thickness: initial; font-family: "Open Sans", sans-serif; line-height: 1.75; padding-top: 0px; orphans: 2; white-space: pre-wrap; widows: 2;" class="">Passcode: 686688</div></div></div><div style="font-family: Tahoma, Verdana, sans-serif; font-size: 13.333333015441895px;" class="">———————————</div></div><div class=""><br class=""></div><div class="">Wishing you a happy New Year,</div><div class=""><br class=""></div><div class="">All the best</div><div class=""><br class=""></div><div class="">Raffaella</div><div class=""><br class=""><div class="">
<meta charset="UTF-8" class=""><div dir="auto" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div>Prof. Raffaella Schneider</div><div><a href="mailto:raffaella.schneider@uniroma1.it" class="">raffaella.schneider@uniroma1.it</a></div><div class="">Dipartimento di Fisica </div><div class="">Senior Fellow Scuola Superiore di Studi Avanzati Sapienza</div><div class="">Sapienza Università di Roma</div><div class="">P.le A. Moro 2, 00185 Roma, Italy</div><div class="">Phone: +39 06 4991 4312</div><div class="">Skype: raffasch</div><div class="">Zoom: <a href="https://uniroma1.zoom.us/j/86080015153?pwd=dlV1eVNsS0xwazlMWTVZV05YeXZyUT09" class="">https://uniroma1.zoom.us/j/86080015153?pwd=dlV1eVNsS0xwazlMWTVZV05YeXZyUT09</a></div></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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