The detection of gravitational waves is a powerful tool in our quest to deepen our understanding of fundamental physics. To make the most out of this tool, we need to accurately simulate the whole process of gravitational wave emission, propagation and detection by interferometers. The methods of Cauchy-Characteristic Extraction (CCE), and Matching (CCM) have the potential to provide highly accurate gravitational waveform models. In reaching this potential there is a subtle obstacle that has been overlooked. This obstacle is the weakly hyperbolic structure of the PDE system solved in the Characteristic setup of the Einstein Field Equations (EFE), which results from the common choice of Bondi-like coordinates. Motivated by this, I will discuss toy models that capture that PDE structure and study CCE and CCM with them. More specifically, I will present norm convergence tests that demonstrate the effect of weak hyperbolicity in model CCE and CCM and discuss how these results relate to CCE and CCM for the EFE.
Numerical convergence of model Cauchy-Characteristic Extraction and Matching
Quasinormal modes and quasibound states of Kerr-like black holes
Next Journal Club
Discussion of the paper "Relativistic drag forces on black holes from scalar dark matter clouds of all sizes", by Dina Traykova, et al.
Black Hole Workshops
XVI Black Holes Workshop, Porto,
19-20 December 2023
Previous workshops in the series:
I Black Holes Workshop, Porto, 2008
II Black Holes Workshop, Lisbon, 2009
III Black Holes Workshop, Minho, 2010
IV Black Holes Workshop, Aveiro, 2011
V Black Holes Workshop, Lisbon, 2012
VI Black Holes Workshop, Minho 2013
VII Black Holes Workshop, Aveiro 2014
VIII Black Holes Workshop, Lisbon 2015
IX Black Holes Workshop, Minho 2016
X Black Holes Workshop, Aveiro 2017
XI Black Holes Workshop, Lisbon, 2018
XII Black Holes Workshop, Minho, 2019
XIII Black Holes Workshop, Lisbon, 2020
XIV Black Holes Workshop, Aveiro, 2021
XV Black Holes Workshop, Lisbon, 2022
Our group coordinates the Marie Curie RISE FunFiCO network (Dec 2017- Dec 2023)
More info here
Our group coordinates the Marie Curie Staff Exchange NewFunFiCO network (Jan 2023- Dec 2026)
More info here
Our group was part of the Gravitational Wave Universe
April 2017 - April 2021
Our group was part of the RISE StronGrHEP network (2016-2019)
Paris, 12-13 May 2016
Azores, 3-8 July 2017
Osaka, 4-8 September 2017
NRHEP Network Meetings
Our group coordinated the "Numerical Relativity and High Energy Physics" IRSES network (2012-2015). Here is a list of the global network meetings organized:
9-13 July 2012, Aveiro, Portugal
11-14 March 2013, Lisbon, Portugal
6-10 January 2014, Mississippi, USA
7-10 July 2015, Rome, Italy
28 Sep-2 Oct 2015, Belém, Brazil
Quantum Gravity Phenomenology in the Multimessanger Approach
COST Action CA18108
Mar 2019 - Mar 2023
Ph.D. and Post-doctoral opportunities
Contact us If you are interested in pursuing graduate studies/research in our group.
Information for prospective Ph.D. students can be found here.
Past Ph.D. theses from our group can be found here.
Working as a researcher in Portugal - a quick guide.