A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
The influence of spin in black hole triplets
Tekijät: Chitan, A.; Mylläri, A.; Valtonen, M.
Kustantaja: ELSEVIER
Kustannuspaikka: AMSTERDAM
Julkaisuvuosi: 2025
Journal: Astronomy and Computing
Tietokannassa oleva lehden nimi: ASTRONOMY AND COMPUTING
Lehden akronyymi: ASTRON COMPUT
Artikkelin numero: 100933
Vuosikerta: 51
Sivujen määrä: 11
ISSN: 2213-1337
eISSN: 2213-1345
DOI: https://doi.org/10.1016/j.ascom.2025.100933
Verkko-osoite: https://doi.org/10.1016/j.ascom.2025.100933
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/485104568
Spin can influence the dynamics of the already chaotic black hole triplet system. We follow this problem in two sets of simulations: first, the Agekian-Anosova region (or region D), and second, using Pythagorean triangles. We use ARCcode, an N-body code that performs numerical integration of orbits. This code includes post-Newtonian corrections, which we include up to the 2.5th order. Inset one of our simulations, we fix the masses of the black holes at 106 M circle dot. Then we run the simulations first without any spin added and after by initialising spin on one of the black holes. We find that after including spin into the system, 12.9% of the simulations changed outcomes. Either the systems went from having all black holes merging to having a black hole escaping the system, or vice versa. In the second set of simulations, we expanded into Pythagorean triangles as initial positions of black holes, stemming from Burrau's three-body problem. We varied the masses of the black holes from 100 M circle dot-1012 M circle dot. Black holes in these systems were given spin in normalised units ranging from 0 to similar to 0.95. We find that intermediate mass black holes in the range of 104 M circle dot-105 M circle dot, were influenced the most by spin, particularly in their lifetimes. We also find that simulations, initialised as 2-dimensional, become 3-dimensional.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
