Cosmology News & Events

Primordial black holes (PBHs) might form in the early universe and could comprise a significant fraction of the dark matter. If they are generated due to enhanced scalar perturbations at small scales, their formation is inevitably accompanied by the emission of gravitational waves (GWs) that could be seen by current and future GW experiments.

The "New horizons for Psi school and workshop" will take place at IST Lisbon, 1-5 July 2024, with the participation of Gr@v members as speakers.

C. Herdeiro gave an invited colloquium at the Institutt for teoretisk astrofysikk of the University of Oslo Norway on September 1st 2023.

The paper "Two spinning black holes balanced by their synchronised scalar hair", describing the first construction of two asymptotically flat, neutral, spinning black holes in equilibrium, regular on and outside their event horizon, supported by their "hair", was published in Physical Review Letters and highlighted as Editors' Suggestion.

The VIII International Meeting of "Casa das Ciências" took place at the University of Aveiro from 17-19 July 2023, with the participation of hundreds of teachers. C. Herdeiro was one of the invited speakers talking about black holes and gravitational waves, with the moderation of M. Zilhão.

On Saturday July 15, part of the group got together, with some younger reinforcements, to celebrate the summer and the ending of the academic year. The result was the least important. Great fun, followed by a tasty seaside lunch to replace (in excess!) the burnt calories.

The VIII scalar field dark matter workshop will take place in Playa del Carmen, Mexico, on 29-30 September 2023. C. Herdeiro is one of the invited speakers.