We construct and explore Noether charge-swapping structures of boson stars, drawing inspiration from similar configurations of non-topological solitons in Minkowski space (Charge-swapping Q-balls). The resulting structures are dynamic, with a multipolar structure and both positive and negative Noether charges within a star. The opposite charges are exchanged over time, and thanks to gravitational attraction, they exist even in the case of a free scalar field. We also investigate the effects of self-interactions on these complex structures. Finally, we discuss the use of such charge-swapping boson star models on a galactic scale as a potential solution to the problem of the observed anisotropic distribution of satellite galaxies.
Complex structures of boson stars and anisotropic distribution of satellite galaxies
Next Seminar
Slowly Rotating Accretion Flows around Supermassive Black Holes in Elliptical Galaxies
Next Journal Club
TBA
Black Hole Workshops
Next workshop:
XVII Black Holes Workshop, Aveiro,
19-20 December 2024
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
XVI Black Holes Workshop, Porto, 2023
Numerical data
NewFunFICO network
Our group coordinates the Marie Sklodowska Curie Staff Exchange NewFunFiCO network (Jan 2023- Dec 2026)
More info here
FunFiCO Network
Our group coordinates the Marie Curie RISE FunFiCO network (Dec 2017- Dec 2023)
More info here
EuCAPT Consortium
GWVerse COST
StronGrHEP Network
Our group was part of the RISE StronGrHEP network (2016-2019)
Meetings:
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:
First Meeting:
9-13 July 2012, Aveiro, Portugal
Second Meeting:
11-14 March 2013, Lisbon, Portugal
Third Meeting:
6-10 January 2014, Mississippi, USA
Fourth Meeting:
7-10 July 2015, Rome, Italy
Fifth Meeting:
28 Sep-2 Oct 2015, Belém, Brazil
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.