NAGIOS: RODERIC FUNCIONANDO

Dynamically Stable Ergostars Exist: General Relativistic Models and Simulations

Repositori DSpace/Manakin

IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Dynamically Stable Ergostars Exist: General Relativistic Models and Simulations

dc.contributor.author	Tsokaros, Antonios
dc.contributor.author	Ruiz Meneses, Milton Javier
dc.contributor.author	Sun, Lunan
dc.contributor.author	Shapiro, Stuart L.
dc.contributor.author	Uryū, Kōji
dc.date.accessioned	2023-06-02T13:40:15Z
dc.date.available	2023-06-02T13:40:15Z
dc.date.issued	2019
dc.identifier.citation	Tsokaros, Antonios Ruiz Meneses, Milton Javier Sun, Lunan Shapiro, Stuart L. Ury&#363, K&#333ji 2019 Dynamically Stable Ergostars Exist: General Relativistic Models and Simulations Physical Review Letters 123 23 231103-1 231103-5
dc.identifier.uri	https://hdl.handle.net/10550/87670
dc.description.abstract	We construct the first dynamically stable ergostars (equilibrium neutron stars that contain an ergoregion) for a compressible, causal equation of state. We demonstrate their stability by evolving both strict and perturbed equilibrium configurations in full general relativity for over a hundred dynamical timescales (≳30 rotational periods) and observing their stationary behavior. This stability is in contrast to earlier models which prove radially unstable to collapse. Our solutions are highly differentially rotating hypermassive neutron stars with a corresponding spherical compaction of C=0.3. Such ergostars can provide new insights into the geometry of spacetimes around highly compact, rotating objects and on the equation of state at supranuclear densities. Ergostars may form as remnants of extreme binary neutron star mergers and possibly provide another mechanism for powering short gamma-ray bursts.
dc.language.iso	eng
dc.relation.ispartof	Physical Review Letters, 2019, vol. 123, num. 23, p. 231103-1-231103-5
dc.subject	Astrofísica
dc.title	Dynamically Stable Ergostars Exist: General Relativistic Models and Simulations
dc.type	journal article
dc.date.updated	2023-06-02T13:40:16Z
dc.identifier.doi	10.1103/PhysRevLett.123.231103
dc.identifier.idgrec	160086
dc.rights.accessRights	open access