Zobrazeno 1 - 10
of 150
pro vyhledávání: '"Trani, Alessandro A"'
Autor:
Xing, Zepei, Torres, Santiago, Götberg, Ylva, Trani, Alessandro A., Korol, Valeriya, Cuadra, Jorge
Although planets have been found orbiting binary systems, whether they can survive binary interactions is debated. While the tightest-orbit binaries should host the most dynamically stable and long-lived circumbinary planetary systems, they are also
Externí odkaz:
http://arxiv.org/abs/2410.19695
Recent numerical results seem to suggest that in certain regimes of typical particle velocities the gravitational $N-$body problem (for $3\leq N\lesssim 10^3$) is intrinsically less chaotic when the post-Newtonian (PN) force terms are included, with
Externí odkaz:
http://arxiv.org/abs/2410.15410
This study explores the formation and implications of mini-active galactic nuclei (mAGN) disks around intermediate-mass black holes (IMBHs) embedded in gas-rich globular/nuclear clusters (GCs). We examine the parameter space for stable mAGN disks, co
Externí odkaz:
http://arxiv.org/abs/2409.13805
We explore the stability and fate of gravitational triple systems comprising a central massive body and a tight binary of less massive pairs. Our present purpose is two fold; (1) to improve the Hill-type stability criterion for the binary in those sy
Externí odkaz:
http://arxiv.org/abs/2409.06253
Autor:
Zwick, Lorenz, Tiede, Christopher, Trani, Alessandro A., Derdzinski, Andrea, Haiman, Zoltan, D'Orazio, Daniel J., Samsing, Johan
We study the gravitational wave (GW) emission of sources perturbed by periodic dynamical forces which do not cause secular evolution in the orbital elements. We construct a corresponding post-Newtonian waveform model and provide estimates for the det
Externí odkaz:
http://arxiv.org/abs/2405.05698
Autor:
Iorio, Giuliano, Torniamenti, Stefano, Mapelli, Michela, Dall'Amico, Marco, Trani, Alessandro A., Rastello, Sara, Sgalletta, Cecilia, Rinaldi, Stefano, Costa, Guglielmo, Dhal-Lahtinen, Bera A., Escobar, Gaston J., Korb, Erika, Vaccaro, M. Paola, Lacchin, Elena, Mestichelli, Benedetta, di Carlo, Ugo Niccolò, Spera, Mario, Sedda, Manuel Arca
Publikováno v:
A&A 690, A144 (2024)
Gaia BH3 is the first observed dormant black hole (BH) with a mass of $\approx{30}$ M$_\odot$ and represents the first confirmation that such massive BHs are associated with metal-poor stars. Here, we explore the isolated binary formation channel for
Externí odkaz:
http://arxiv.org/abs/2404.17568
Autor:
Trani, Alessandro Alberto, Leigh, Nathan W. C., Boekholt, Tjarda C. N., Zwart, Simon Portegies
Publikováno v:
A&A 689, A24 (2024)
The three-body problem (3BP) poses a longstanding challenge in physics and celestial mechanics. Despite the impossibility of obtaining general analytical solutions, statistical theories have been developed based on the ergodic principle. This assumpt
Externí odkaz:
http://arxiv.org/abs/2403.03247
Publikováno v:
Monthly Notices of the Royal Astronomical Society, Volume 530, Issue 4, (2024), pp.3689-3705
Models of accretion discs surrounding active galactic nuclei (AGNs) find vast applications in high-energy astrophysics. The broad strategy is to parametrize some of the key disc properties such as gas density and temperature as a function of the radi
Externí odkaz:
http://arxiv.org/abs/2403.00060
We explore three-body binary formation (3BBF), the formation of a bound system via gravitational scattering of three initially unbound bodies (3UB), using direct numerical integrations. For the first time, we consider systems with unequal masses, as
Externí odkaz:
http://arxiv.org/abs/2402.12429
Dynamical encounters of stellar-mass black holes (BHs) in a disc of compact objects around a supermassive BH (SMBH) can accelerate the formation and coalescence of BH binaries. It has been proposed that binary-single encounters among BHs in such disc
Externí odkaz:
http://arxiv.org/abs/2312.13281