Zobrazeno 1 - 10
of 858
pro vyhledávání: '"Fernandez, Rodrigo"'
Autor:
Dean, Coleman, Fernández, Rodrigo
We investigate nucleosynthesis in the sub-relativistic outflows from black hole (BH) accretion disks formed in failed supernovae from rapidly-rotating Wolf-Rayet stars. These disks reach the neutrino-cooled regime during a portion of their evolution,
Externí odkaz:
http://arxiv.org/abs/2408.15338
Autor:
Dean, Coleman, Fernández, Rodrigo
We investigate mass ejection from accretion disks formed during the collapse of rapidly-rotating Wolf-Rayet stars. The neutrino-cooled, black hole (BH) accretion disk system that forms at the center of the star -- and the ensuing outflows -- provide
Externí odkaz:
http://arxiv.org/abs/2403.08877
Autor:
Vieira, Nicholas, Ruan, John J., Haggard, Daryl, Ford, Nicole M., Drout, Maria R., Fernández, Rodrigo
In kilonovae, freshly-synthesized $r$-process elements imprint features on optical spectra, as observed in AT2017gfo, the counterpart to the GW170817 binary neutron star merger. However, measuring the $r$-process compositions of the merger ejecta is
Externí odkaz:
http://arxiv.org/abs/2308.16796
Magnetized hypermassive neutron stars (HMNSs) have been proposed as a way for neutron star (NS) mergers to produce high electron fraction, high velocity ejecta, as required by kilonova models to explain the observed light curve of GW170817. The HMNS
Externí odkaz:
http://arxiv.org/abs/2308.16237
The accretion disk formed after a neutron star merger is an important contributor to the total ejecta from the merger, and hence to the kilonova and the $r$-process yields of each event. Axisymmetric viscous hydrodynamic simulations of these disks ca
Externí odkaz:
http://arxiv.org/abs/2307.02554
Autor:
Vieira, Nicholas, Ruan, John J., Haggard, Daryl, Ford, Nicole, Drout, Maria R., Fernández, Rodrigo, Badnell, N. R.
Freshly-synthesized r-process elements in kilonovae ejecta imprint absorption features on optical spectra, as observed in the GW170817 binary neutron star merger. These spectral features encode insights into the physical conditions of the r-process a
Externí odkaz:
http://arxiv.org/abs/2209.06951
Autor:
Haddadi, Milad, Duez, Matthew D., Foucart, Francois, Ramirez, Teresita, Fernandez, Rodrigo, Knight, Alexander L., Jesse, Jerred, Hebert, Francois, Kidder, Lawrence E., Pfeiffer, Harald P., Scheel, Mark A.
Detectable electromagnetic counterparts to gravitational waves from compact binary mergers can be produced by outflows from the black hole-accretion disk remnant during the first ten seconds after the merger. Two-dimensional axisymmetric simulations
Externí odkaz:
http://arxiv.org/abs/2208.02367
We examine the effect of neutrino flavor transformation by the fast flavor instability (FFI) on long-term mass ejection from accretion disks formed after neutron star mergers. Neutrino emission and absorption in the disk set the composition of the di
Externí odkaz:
http://arxiv.org/abs/2207.10680
Autor:
Fernandez, Rodrigo Nobre1 (AUTHOR) rodrigonobrefernandez@gmail.com, Niquito, Thais Waideman2 (AUTHOR), da Silva Teixeira, Gibran2 (AUTHOR), Vasconcelos, Andressa Mielke3 (AUTHOR)
Publikováno v:
Public Organization Review. Sep2024, Vol. 24 Issue 3, p823-843. 21p.
Autor:
Fahlman, Steven, Fernández, Rodrigo
We examine the long-term evolution of accretion tori around black hole (BH) remnants of compact object mergers involving at least one neutron star, to better understand their contribution to kilonovae and the synthesis of r-process elements. To this
Externí odkaz:
http://arxiv.org/abs/2204.03005