Strong Gravity News &amp; Events

Recently, a novel modified theory of gravity that claims to bypass Lovelock's theorem whilst preserving the number of gravitational degrees of freedom has attracted a great deal of attention.

Spherical electro-vacuum black holes with resonant, scalar Q-hair

Speaker

Eugen Radu

Event date

Friday, April 10, 2020 - 11:30

Venue

online

Event type

Discussion of the paper "Spherical electro-vacuum black holes with resonant, scalar Q-hair",
ArXiv:2004.00336

Linear growth of massive vector superradiant instabilities of Kerr black holes

Speaker

Nuno M. Santos (IST-Lisbon)

Event date

Wednesday, April 1, 2020 - 14:30

Venue

online

Event type

A recent breakthrough in the separability of the Proca equation in Kerr spacetime opened up new opportunities for a thorough study of fast-growi

Observational signatures from supermassive black hole mimickers

Speaker

Hector Olivares (Radboud University Nijmegen, Netherlands)

Event date

Friday, June 19, 2020 - 11:30

Venue

online

Event type

Seminars

Advanced interferometric techniques as those employed in the Event Horizon Telescope (EHT) and GRAVITY recently allowed to study the environment of the two nearest supermassive black hole candidates at horizon-scale resoluton.

Astrophysics

Dynamics of bosonic stars

Fabrizio di Giovanni gave us a nice update on the dynamical properties of bosonic stars, from numerical relativity simulations.

Cosmology

Visits of Fabrizio di Giovanni, Kunihito Uzawa and Nico Sanchis-Gual

Fabrizio di Giovanni (Valencia U., Spain), Kunihito Uzawa (Kwansei Gakuin U., Japan) and Nico Sanchis-Gual (IST-Lisbon) visited our group in the second week of March. Many scientific discussions and hard work were rewarded with a very nice dinner in Aveiro!

Slow roll inflation and the swampland

Kunihito Uzawa (Kwansei Gakuin U., Japan) gave us a nice update on the swampland conjecture and its implications in cosmology.

Cosmology

Invited Colloquium in Cambridge and Seminar in Southampton

Gr@v member C. Herdeiro gave an invited colloquium at the Centre for Mathematical Sciences, U. Cambridge, of the GR and HEP groups on March 4th and an invited seminar at STAG, School of Mathematical Sciences, U. Southampton in March 5th.

Holographic surface counterterms and it’s application in Einstein-Proca theory

Speaker

Aichen Li

Event date

Friday, March 13, 2020 - 11:00

Venue

Maths. Dept. Room Sousa Pinto

Event type

Discussion of ongoing work.

VII Leopoldo García-Colin Mexican Meeting

The VII Leopoldo Garcia--Colin Mexican Meeting on Mathematical and Experimental Physics took place at Colegio Nacional in Mexico City, from 12-21 February 2020. The meeting included a symposium on black holes and gravitational waves where Gr@v member C. Herdeiro gave a plenary invited lecture.