<div dir="ltr">Dear Colleagues,<br><br>the gravity theory group is organizing a series of online seminars via Zoom:<br><br><a href="https://uniroma1.zoom.us/j/81283707469?pwd=SzkyMk5jRm0xcEN3WE5MYVh1RVFtQT09" class="google-drive-opener">https://uniroma1.zoom.us/j/81283707469?pwd=SzkyMk5jRm0xcEN3WE5MYVh1RVFtQT09<br></a><br>ID meeting: 812 8370 7469<br>Passcode: 915450<br><br>The first seminar will be next Monday, here the details:<br><br><div>%%%%%<br><b>19/10/2020 h11.00: <i>"Bayesian Metric Reconstruction with Gravitational Wave Observations"</i>, by Sebastian Volkel, SISSA (IT)</b><div><b><br></b></div><div><b>Abstract:</b></div><div>Theories of gravity extending or modifying general relativity typically allow for black hole solutions different from the Schwarzschild/Kerr geometries. Electromagnetic observations have been used to place constraints on parametrized deviations from the Schwarzschild/Kerr metrics, in an effort to gain insight on the underlying gravitational theory. In this work, we show that observations of the gravitational quasi-normal modes by existing and future interferometers can be used to bound the same parametrized black hole metrics that are constrained by electromagnetic observations (e.g. by the Event Horizon Telescope). We argue that our technique is most sensitive to changes in the background black hole metric near the circular photon orbit, and that it is robust against the changes that a gravitational theory differing from general relativity necessarily introduces in the equations for the gravitational perturbations. We demonstrate our approach by reconstructing the background metric from a set of simulated observations using a Bayesian approach.</div><div>%%%%%%<br><br><br>Some of the seminars will be technical but might be of interest also for other people. Here is the calendar of next seminars<br><br>04/11/2020 h16:00: "The mass gap, the spin gap, and the origin of merging binary black holes" by Vishal Baibhav, JHU (US)<br>30/11/2020 h11:00: "Recent results and simulations on boson stars", by Nico Sanchis-Gual, IST (PT)<br>16/12/2020 h16.00 "Waveform systematics in the gravitational-wave inference of tidal parameters and equation of state from binary neutron star signals", by Rossella Gamba, Jena (DE)<br><br>The list will be constantly updated on <a href="https://web.uniroma1.it/gmunu/events" class="google-drive-opener">https://web.uniroma1.it/gmunu/events</a></div><div><br>Cheers,</div><div>Paolo</div></div><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">Paolo Pani <br>Associate Professor<br>ERC StG Fellow, DarkGRA project<br>Junior Fellow, Scuola Superiore di Studi Avanzati Sapienza<br><br>Physics Department (Marconi Building), 2nd floor, room 253<br>Sapienza University of Rome<br>Piazzale Aldo Moro 5 - 00185 Rome (Italy) <br>+39 06 4991 4276 (int 24276)</div></div>
<br>
<div style="font-size:1.3em"><font size="2"><span style="color:rgb(34,34,34);font-family:Verdana,sans-serif;background-color:rgb(255,255,255)">______________________________<wbr>__________________________</span></font></div><font size="1"><span style="color:rgb(34,34,34);font-family:Verdana,sans-serif;background-color:rgb(255,255,255)">Le informazioni contenute in questo messaggio di posta elettronica sono strettamente riservate e indirizzate esclusivamente al destinatario. Si prega di non leggere, fare copia, inoltrare a terzi o conservare tale messaggio se non si è il legittimo destinatario dello stesso. Qualora tale messaggio sia stato ricevuto per errore, si prega di restituirlo al mittente e di cancellarlo permanentemente dal proprio computer.</span><br style="color:rgb(34,34,34);font-family:Verdana,sans-serif;background-color:rgb(255,255,255)"><span style="color:rgb(34,34,34);font-family:Verdana,sans-serif;background-color:rgb(255,255,255)">The information contained in this e mail message is strictly confidential and intended for the use of the addressee only. If you are not the intended recipient, please do not read, copy, forward or store it on your computer. If you have received the message in error, please forward it back to the sender and delete it permanently from your computer system.</span></font><div><hr></div>
<br>
<img src="https://drive.google.com/uc?id=1jSNW-wN76rZklfkg4rwweBp5lrX6mO9g">