Zobrazeno 1 - 10
of 52
pro vyhledávání: '"Avara, Mark"'
Autor:
Avara, Mark J., Krolik, Julian H., Campanelli, Manuela, Noble, Scott C., Bowen, Dennis, Ryu, Taeho
While supermassive binary black holes inspiral toward merger they may also experience significant accretion of matter from a surrounding disk. We study the dynamics of this system, simultaneously describing the evolving spacetime and magnetized plasm
Externí odkaz:
http://arxiv.org/abs/2305.18538
Accretion of debris seems to be the natural mechanism to power the radiation emitted during a tidal disruption event (TDE), in which a supermassive black hole tears apart a star. However, this requires the prompt formation of a compact accretion disk
Externí odkaz:
http://arxiv.org/abs/2305.05333
Autor:
Armengol, Federico G. Lopez, Etienne, Zachariah B., Noble, Scott C., Kelly, Bernard J., Werneck, Leonardo R., Drachler, Brendan, Campanelli, Manuela, Cipolletta, Federico, Zlochower, Yosef, Murguia-Berthier, Ariadna, Ennoggi, Lorenzo, Avara, Mark, Ciolfi, Riccardo, Faber, Joshua, Fiacco, Grace, Giacomazzo, Bruno, Gupte, Tanmayee, Ha, Trung, Krolik, Julian H., Mewes, Vassilios, O'Shaughnessy, Richard, Rueda-Becerril, Jesús M., Schnittman, Jeremy
Publikováno v:
Phys. Rev. D 106, 083015 (2022)
We perform binary neutron star (BNS) merger simulations in full dynamical general relativity with IllinoisGRMHD, on a Cartesian grid with adaptive-mesh refinement. After the remnant black hole has become nearly stationary, the evolution of the surrou
Externí odkaz:
http://arxiv.org/abs/2112.09817
Autor:
Combi, Luciano, Armengol, Federico G. Lopez, Campanelli, Manuela, Noble, Scott C., Avara, Mark, Krolik, Julian H., Bowen, Dennis
We perform a full 3D general relativistic magnetohydrodynamical (GRMHD) simulation of an equal-mass, spinning, binary black hole approaching merger, surrounded by a circumbinary disk and with mini-disks around each black hole. For this purpose, we ev
Externí odkaz:
http://arxiv.org/abs/2109.01307
Autor:
Murguia-Berthier, Ariadna, Noble, Scott C., Roberts, Luke F., Ramirez-Ruiz, Enrico, Werneck, Leonardo R., Kolacki, Michael, Etienne, Zachariah B., Avara, Mark, Campanelli, Manuela, Ciolfi, Riccardo, Cipolletta, Federico, Drachler, Brendan, Ennoggi, Lorenzo, Faber, Joshua, Fiacco, Grace, Giacomazzo, Bruno, Gupte, Tanmayee, Ha, Trung, Kelly, Bernard J., Krolik, Julian H., Armengol, Federico G. Lopez, Margalit, Ben, Moon, Tim, O'Shaughnessy, Richard, Rueda-Becerril, Jesús M., Schnittman, Jeremy, Zenati, Yossef, Zlochower, Yosef
The first binary neutron star merger has already been detected in gravitational waves. The signal was accompanied by an electromagnetic counterpart including a kilonova component powered by the decay of radioactive nuclei, as well as a short $\gamma$
Externí odkaz:
http://arxiv.org/abs/2106.05356
Autor:
Armengol, Federico G. Lopez, Combi, Luciano, Campanelli, Manuela, Noble, Scott C., Krolik, Julian H., Bowen, Dennis B., Avara, Mark J., Mewes, Vassilios, Nakano, Hiroyuki
Supermassive black hole binaries are likely to accrete interstellar gas through a circumbinary disk. Shortly before merger, the inner portions of this circumbinary disk are subject to general relativistic effects. To study this regime, we approximate
Externí odkaz:
http://arxiv.org/abs/2102.00243
Autor:
Bowen, Dennis B., Avara, Mark, Mewes, Vassilios, Zlochower, Yosef, Noble, Scott C., Campanelli, Manuela, Shiokawa, Hotaka, Cheng, Roseanne M., Krolik, Julian H.
We present an extension of the PatchworkMHD code [1], itself an MHD-capable extension of the Patchwork code [2], for which several algorithms presented here were co-developed. Its purpose is to create a multipatch scheme compatible with numerical sim
Externí odkaz:
http://arxiv.org/abs/2002.00088
Autor:
Bowen, Dennis B., Mewes, Vassilios, Noble, Scott C., Avara, Mark, Campanelli, Manuela, Krolik, Julian H.
In this paper we continue the first ever study of magnetized mini-disks coupled to circumbinary accretion in a supermassive binary black hole (SMBBH) approaching merger reported in Bowen et al. 2018. We extend this simulation from 3 to 12 binary orbi
Externí odkaz:
http://arxiv.org/abs/1904.12048
In accretion disks with large-scale ordered magnetic fields, the magnetorotational instability (MRI) is marginally suppressed, so other processes may drive angular momentum transport leading to accretion. Accretion could then be driven by large-scale
Externí odkaz:
http://arxiv.org/abs/1709.10113
Publikováno v:
MNRAS, 2018, 480, 3547
The classical, relativistic thin-disk theory of Novikov and Thorne (NT) predicts a maximum accretion efficiency of 40% for an optically thick, radiatively efficient accretion disk around a maximally spinning black hole (BH). However, when a strong ma
Externí odkaz:
http://arxiv.org/abs/1706.08982