Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published March 2018 | Submitted
Journal Article Open

Hot super-dense compact object with particular EoS

Abstract

We show the possibility of existence of a self-gravitating spherically-symmetric equilibrium configuration for a neutral matter with neutron-like density, small mass M≪M⊙, and small radius R≪R⊙. We incorporate the effects of both the special and general theories of relativity. Such object may be formed in a cosmic cataclysm, perhaps an exotic one. Since the base equations of hydrostatic equilibrium are completed by the equation of state (EoS) for the matter of the object, we offer a novel, interpolating experimental data from high-energy physics, EoS which permits the existence of such compact system of finite radius. This EoS model possesses a critical state characterized by density ρ_c and temperature T_c. For such an object, we derive a radial distribution for the super-dense matter in "liquid" phase using Tolman–Oppenheimer–Volkoff equations for hydrostatic equilibrium. We demonstrate that a stable configuration is indeed possible (only) for temperatures smaller than the critical one. We derive the mass-radius relation (adjusted for relativistic corrections) for such small (M≪M⊙M≪M⊙) super-dense compact objects. The results are within the constraints established by both heavy-ion collision experiments and theoretical studies of neutron-rich matter.

Additional Information

© 2018 Springer Science+Business Media B.V., part of Springer Nature. Received: 28 October 2017; Accepted: 27 January 2018; First Online: 07 February 2018.

Attached Files

Submitted - 1603.03427.pdf

Files

1603.03427.pdf
Files (489.2 kB)
Name Size Download all
md5:50932b87de2761b8b5bd79c94b28d271
489.2 kB Preview Download

Additional details

Created:
August 21, 2023
Modified:
October 18, 2023