Numerical solution of gravitational dynamics à la Chesler & Yaffe
Speaker
Marco Sampaio
Event date
Venue
GAP room
Event type
Strong Gravity News & Events
Rotating neutron stars in modified gravity
Speaker
Stoytcho Yazadjiev (U. Sofia)
Event date
Venue
GAP room
Event type
Abstract: The natural laboratories for testing the strong-field regime of gravity and for testing the modified gravitational theories are the neutron stars. In my talk I will present some results about neutron stars, both static and rotating, in f(R) theories and in scalar-tensor theories of gravity. Especially I will focus on effects in modified gravity neutron stars that drastically change the structure of the stars in comparison with General Relativity.
Hairy black holes with self-interactions
Speaker
Helgi Rúnarsson
Event date
Venue
GAP room
Event type
From the Flamm-Einstein-Rosen bridge and geons to the modern renaissance of space-time tunnels
Speaker
Francisco Lobo (CAAUL - U. Lisboa)
Event date
Venue
GAP room
Event type
Abstract: We consider the possibility of multiply-connected spacetimes, ranging from the Einstein-Rosen bridge, geons, and the modern renaissance of space-time tunnels/wormholes.
Flávio Coelho's Ph.D. defense
Gr@v Ph.D. student Flávio Coelho successfully defended his Ph.D. thesis with title "Radiadion from a D-dimensional collision of gravitational shock waves" on February 20th 2015. Congratulations Flávio!
Top 1% cited paper
According to Thomson Reuters ISI Web of Knowledge, the Gr@v paper "Kerr black holes with scalar hair" got "enough citations since September/October 2014 to be placed amongst the 1% top cited papers in its academic field."
On multi black hole systems in 5 dimensions
Speaker
Cristian Stelea
Event date
Venue
GAP room
Event type
Abstract: In this talk I review a recent solution generating technique based on the symmetries of the dimensionally reduced Lagrangian of the Einstein-Maxwell-dilaton system in five dimensions.
Gravity=(gauge)^2 for soft gravitons
Speaker
Miguel A. Vázquez-Mozo (U. Salamanca)
Event date
Venue
GAP room
Event type
Abstract: Recently it has been realized that subleading corrections to soft theorems in gauge theories and gravity are related to the asymptotic symmetries of the theory at null infinity. In this talk I will discuss how in the case of the soft graviton theorem these corrections, when written in terms of kinematic invariants, exhibit a double copy structure for the emitted graviton. This result holds also in the Gribov limit, where emitted gravitons are not necessarily soft.
Testing GR with Astrophysical Observations
A large review paper, "Testing General Relativity with past and future Astrophysical observations", arXiv:1501.07271, has been made public, prepared as a Topical Review for CQG. The review includes contributions from many international experts, including from our group, and was led by Emanuele Berti. Thank you Emanuele for pushing this team effort!