Perturbative approach to the structure of rapidly rotating neutron stars

Journal Article · Mon Aug 15 00:00:00 EDT 2005 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PhysRevD.72.044028· OSTI ID:20711363

Benhar, Omar; Ferrari, Valeria; Gualtieri, Leonardo ^[1]; Marassi, Stefania ^[1]

---

1. Dipartimento di Fisica 'G. Marconi', Universita degli Studi di Roma, 'La Sapienza', P.le A. Moro 2, 00185 Rome (Italy)

We construct models of rotating stars using the perturbative approach introduced by J. Hartle in 1967, and a set of equations of state proposed to model hadronic interactions in the inner core of neutron stars. We integrate the equations of stellar structure to third order in the angular velocity and show, comparing our results to those obtained with fully nonlinear codes, to what extent third order corrections are needed to accurately reproduce the moment of inertia of a star which rotates at rates comparable to that of the fastest isolated pulsars.

• OSTI ID: 20711363
• Journal Information: Physical Review. D, Particles Fields, Vol. 72, Issue 4; Other Information: DOI: 10.1103/PhysRevD.72.044028; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANGULAR VELOCITY
CORRECTIONS
EQUATIONS OF STATE
HADRONS
MOMENT OF INERTIA
NEUTRON STARS
NONLINEAR PROBLEMS
PARTICLE INTERACTIONS
PERTURBATION THEORY
PULSARS
ROTATION