[astroseminar at Sapienza] Gravity theory webinar Mon Nov 23th @noon: Nico Sanchis-Gual (IST, Lisbon)

[Paolo Pani]

Dear All,

next Monday (*Nov 23th at noon*) there will be a webinar by Nico
Sanchis-Gual (IST, Lisbon):

*Light in the dark: GW190521 as a Proca star merger*

The detections of gravitational waves are opening a new window to the
Universe. The nature of black holes and neutron stars may now be unveiled,
but gravitational radiation may also lead to exciting discoveries of new
exotic compact objects, oblivious to electromagnetic waves. In particular,
Advanced LIGO-Virgo recently reported a short gravitational-wave signal
(GW190521) interpreted as a quasi-circular merger of black holes, one at
least populating the pair-instability supernova gap. We found that GW190521
is also consistent with numerically simulated signals from head-on
collisions of two (equal mass and spin) horizonless vector boson stars (aka
Proca stars). This provides the first demonstration of close degeneracy
between these two theoretical models, for a real gravitational-wave event.

Zoom link:
https://uniroma1.zoom.us/j/81283707469?pwd=SzkyMk5jRm0xcEN3WE5MYVh1RVFtQT09
ID meeting: 812 8370 7469
Passcode: 915450

Calendar of the gravity theory seminars:
https://calendar.google.com/calendar/u/1?cid=Y191MGo3bG9pYzE1bjBxdGFhN3A4MTlzNDg2Y0Bncm91cC5jYWxlbmRhci5nb29nbGUuY29t

Cheers,
Paolo

-- 
Paolo Pani
Associate Professor
ERC StG Fellow, DarkGRA project
Junior Fellow, Scuola Superiore di Studi Avanzati Sapienza

Physics Department (Marconi Building), 3rd floor, room 334
Sapienza University of Rome
Piazzale Aldo Moro 5 - 00185 Rome (Italy)
+39 06 4991 4472 (int 24472)

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