6 papers
The role of accretion efficiency, natal kicks, and angular momentum transport in the formation of the Gaia black holes
Michela Mapelli, Cecilia Sgalletta, Johanna Müller-Horn +5
Gaia has the potential to deliver several tens of new dormant black holes (BHs) with low-mass stellar companions (hereafter, Gaia BHs) in the upcoming fourth data release. Three Ga…
-body modelling of the ED-2 stream progenitor shows Gaia BH3's formation involved dynamical interactions
Daniel MarÃn Pina, Mark Gieles, Sara Rastello +3
Context. The Gaia collaboration announced the discovery of a binary of a massive black hole (33 M) with a low-mass giant star (Gaia BH3) in the ED-2 stellar stream. The pro…
cBHBd: A fast code for the evolution of tidally limited star clusters and their binary black hole mergers
Fotios Fronimos Pouliasis, Nolan Dickson, Daniel MarÃn Pina +3
The evolution of star clusters is driven by stellar mass loss, two-body relaxation, and evaporation in the Galactic tidal field. Fast modeling tools are crucial for exploring diver…
Repopulating the pair-instability mass gap without sustained growth to massive IMBHs: the case of 47\,Tuc
Debatri Chattopadhyay, Daniel MarÃn Pina, Mark Gieles +2
We model the formation and retention of the most massive black hole (BH) in 47~Tuc using the semi-analytical code \texttt{cBHBd}, coupling cluster evolution with binary BH dynamics…
The formation of Gaia BH3
Daniel MarÃn Pina, Mark Gieles, Sara Rastello +1
The Gaia collaboration announced the discovery of a massive black hole (BH) with a low-mass giant star companion, Gaia BH3, located in the ED-2 stellar stream. The properties of Ga…
Interactions among binary black holes in star clusters: Eccentric gravitational wave captures and triple formation
Daniel MarÃn Pina, Mark Gieles, Tomas Andrade +1
Numerical simulations of star clusters with black holes find that there is only a single dynamically active binary black hole (BBH), at odds with the theoretical expectation of ~5…