On existence of mini-boson stars
Piotr Bizoń and Arthur Wasserman
Commun. Math. Phys. 215 (2000) 357–373
The 2nd Workshop on Compact Objects, Gravitational Waves and Deep Learning will take place in Valencia, from 20-23 June 2022, co-organized by our group. The first edition of this series of workshops took place in Aveiro, in September 2020.
May 12th 2022 will go down in history as the first day when the public saw the supermassive black hole at the centre of the Milky Way. This historical announcement came together with 10 scientific papers. Paper VI cites work by our group.
The essay "On the classicality of bosonic stars" by C. Herdeiro and E. Radu was awarded an honorable mention in the 2022 Gravity Research Foundation Essay competition. See the list of all prized essay's in the 2022 competition here.
The Workshop "Fundamental Physics with LISA", coorganized by the Solvay Institutes, APC and Perimeter Institute, will take place in Brussels from 26-28 April 2022. C. Herdeiro is one of the invited speakers.
Gr@v, together with the Portuguese Physics Society and the EPS Young Minds Aveiro (association of Physics students) is promoting a (non-technical) black holes course, online, for high school teachears and undergraduate students.
It has been argued that ultracompact objects, which possess light rings but no horizons, may be unstable against gravitational perturbations. In this seminar, I will talk about our recent work on the light rings in quasi- black hole solutions which is a family of horizonless spacetimes whose limit is the extremal Reissner- Nordstr¨om black hole.
Boson stars are hypothetical but widely considered exotic compact objects known as ``black-hole mimickers” whose mergers may produce gravitational-wave emissions observable by current ground-based detectors like Advanced LIGO and Virgo.
Alexandre Pombo successfully defended his Ph.D. thesis, entitled "Black holes and solitonic objects with bosonic fields" on April 8 2022. The Ph.D. committee included Arnaldo Martins (President, UA), Daniela Doneva (Tubingen), Yves Brihaye (Mons), Carolina Benone (UFPA), Pedro Avelino (IA, UP) and Carlos Herdeiro (UA, advisor). The thesis was co-advised by Eugen Radu. Congratulations Alexandre!