Visit of Grigoris Panotopoulos
Grigoris Panotopoulos, from IST-Lisbon, visited Gr@v on 28-29 November to discuss tidal Love numbers of compact objects.
Strong Gravity News & Events
V Amazonian Symposium on Physics
The V Amazonian Symposium on Physics was held in Belém, Brazil, from 18-22 November 2019. This meeting was co-sponsored by the Marie Curie RISE FunFiCO network and co-organised by Gr@v members. The invited speakers included Bill Unruh, Bob Wald, John Friedman, Jorge Zanelli and Mirjam Cvetic, amongst others.
Visit to Belém do Pará, Brazil
Gra@v members C. Herdeiro and E. Radu, together with Nuno Santos from IST-Lisbon, visited Universidade Federal do Pará (UFPa), Brazil, in Amazonia, during November 2019, within the Marie Curie RISE FunFiCO partnership. In the photon in the river Guamá, with Carolina Benone, a former UFPa/Aveiro PhD student, now staff at UFPa.
Mini-workshop on black holes and symmetries
Gr@v members C. Herdeiro and E. Radu, were two of the speakers of the Mini-workshop on "Black holes and symmetries" at the Instituto de Física, Pontifica Universidad Católica Valparaíso, Chile. The workshop was organised by Olivera Moskovic and Dumitru Astefanesei. The other speaker was Marc Henneaux from the Université Libre de Bruxelles, Belgium.
Hybrid metric-Palatini gravity: applications to cosmology and astrophysics
Speaker
João Luis Rosa (IST-Lisbon)
Event date
Venue
online
Event type
In this work, we study cosmological and astrophysical applications of the recently proposed generalized hybrid metric-Palatini gravity theory, which combines features of both the metric and th
Quasinormal modes of neutron stars in R^2 gravity
Speaker
Jose Blázquez-Salcedo (Oldenburg U., Germany)
Event date
Venue
Maths. Dept. Room 11.3.21
Event type
In this talk we will discuss the quasinormal modes of neutron stars in modified theories of gravity, in particular, in R^2 gravity. In this model, in addition to the space-time and fluid degrees of freedom that are present in General Relativity, we naturally find a (massive) scalar field.
Spontaneous Scalarization in general Scalar-Vector-Tensor theory
Speaker
Tomohiro Nakamura (Nagoya University, Japan)
Event date
Venue
Maths. Dept. Room 11.3.21
Event type
Spontaneous scalarization is an interesting phenomenon that black holes with a sufficiently large mass or charge spontaneously transit to a solution with
Tidal effect on scalar cloud
Speaker
Taishi Ikeda (IST-Lisbon)
Event date
Venue
Maths. Dept. Room Sousa Pinto
Event type
The existence of light, fundamental bosonic fields is an attractive possibility that can be tested via black hole observations.
We study the effect of a tidal field -- caused by a companion star or black hole -- on the evolution of superradiant scalar-field states around spinning black holes.
Visit of Nelson Eiró, Aichen Li and Ruyong Li
Nelson Eiró visited Gr@v just before successfully defending his M.Sc. thesis on "Strong lensing of light and shadow of a Black Hole surrounded by a heavy accretion disk", at IST-Lisbon, supervised by C. Herdeiro and P. Cunha. This visit coincided with the beginning of a long term visit by Aichen and Ruyong Li, both graduates from Beijing University of Technology.