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pro vyhledávání: '"Lombardi Jr., James"'
Tidal disruptions of stars by stellar-mass black holes are expected to occur frequently in dense star clusters. Building upon previous studies that performed hydrodynamic simulations of these encounters, we explore the formation and long-term evoluti
Externí odkaz:
http://arxiv.org/abs/2305.08905
Autor:
Kıroğlu, Fulya, Lombardi Jr., James C., Kremer, Kyle, Fragione, Giacomo, Fogarty, Shane, Rasio, Frederic A.
We study close encounters of a $1\,M_{\odot}$ middle-age main-sequence star (modeled using MESA) with massive black holes through hydrodynamic simulations, and explore in particular the dependence of the outcomes on the black hole mass. We consider h
Externí odkaz:
http://arxiv.org/abs/2210.08002
Autor:
Kremer, Kyle, Ye, Claire S., Kıroğlu, Fulya, Lombardi Jr., James C., Ransom, Scott M., Rasio, Frederic A.
Close encounters between neutron stars and main-sequence stars occur in globular clusters and may lead to various outcomes. Here we study encounters resulting in tidal disruption of the star. Using $N$-body models, we predict the typical stellar mass
Externí odkaz:
http://arxiv.org/abs/2204.07169
Hydrodynamics of Collisions and Close Encounters between Stellar Black Holes and Main-sequence Stars
Recent analyses have shown that close encounters between stars and stellar black holes occur frequently in dense star clusters. Depending upon the distance at closest approach, these interactions can lead to dissipating encounters such as tidal captu
Externí odkaz:
http://arxiv.org/abs/2201.12368
We study the initial conditions of a common envelope (CE) event resulting in a stellar merger. A merger's dynamics could be understood through its light curve, but no synthetic light curve has yet been created for the full evolution. Using the Smooth
Externí odkaz:
http://arxiv.org/abs/2107.11480
Studies of high-multiplicity, tightly-packed planetary systems suggest that dynamical instabilities are common and affect both the orbits and planet structures, where the compact orbits and typically low densities make physical collisions likely outc
Externí odkaz:
http://arxiv.org/abs/1707.01628
High-multiplicity Kepler systems (referred to as Kepler multis) are often tightly packed and may be on the verge of instability. Many systems of this type could have experienced past instabilities, where the compact orbits and often low densities mak
Externí odkaz:
http://arxiv.org/abs/1706.01975
We explore full/partial tidal disruption events (TDEs) of stars/planets by stellar compact objects (Black holes; BHs; or neutron stars; NSs), which we term micro-TDEs. Disruption of a star/planet with mass $M_{\star}$ may lead to the formation of a d
Externí odkaz:
http://arxiv.org/abs/1602.07698
Autor:
Roberts, Luke F., Lippuner, Jonas, Duez, Matthew D., Faber, Joshua A., Foucart, Francois, Lombardi Jr., James C., Ning, Sandra, Ott, Christian D., Ponce, Marcelo
During the merger of a black hole and a neutron star, baryonic mass can become unbound from the system. Because the ejected material is extremely neutron-rich, the r-process rapidly synthesizes heavy nuclides as the material expands and cools. In thi
Externí odkaz:
http://arxiv.org/abs/1601.07942
Publikováno v:
The Astrophysical Journal, Volume 806, Issue 1, article id. 135, 23 pp. (2015)
Massive stars are usually found in binaries, and binaries with periods less than 10 days may have a preference for near equal component masses. In this paper we investigate the evolution of these binaries all the way to contact and the possibility th
Externí odkaz:
http://arxiv.org/abs/1505.05812