Detailed Information on Publication Record
2015
Braking index of isolated pulsars
URBANCOVÁ, Gabriela, Martin URBANEC, Oliver HAMIL and Jiřina ŘÍKOVSKÁ STONEBasic information
Original name
Braking index of isolated pulsars
Authors
URBANCOVÁ, Gabriela, Martin URBANEC, Oliver HAMIL and Jiřina ŘÍKOVSKÁ STONE
Edition
Physical Review D, US - Spojené státy americké, 2015, 1550-7998
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10308 Astronomy
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Organization unit
Faculty of Philosophy and Science in Opava
UT WoS
000351428400001
Keywords in English
rotating relativistic stars; braking index; equation of state
Tags
Tags
International impact, Reviewed
Links
EE2.3.20.0071, research and development project. GPP209/12/P740, research and development project.
Změněno: 14/4/2021 15:45, Mgr. Pavlína Jalůvková
Abstract
V originále
Isolated pulsars are rotating neutron stars with accurately measured angular velocities Omega, and their time derivatives that show unambiguously that the pulsars are slowing down. Although the exact mechanism of the spin-down is a question of detailed debate, the commonly accepted view is that it arises through emission of magnetic dipole radiation (MDR) from a rotating magnetized body. The calculated energy loss by a rotating pulsar with a constant moment of inertia is assumed proportional to a modeldependent power of Omega. This relation leads to the power law (Omega) over dot = -K Omega^n where n is called the braking index. The aim of this work is to determine the deviation of the value of n from the canonical n = 3 for a star with a frequency dependent moment of inertia in the region of frequencies from zero (static spherical star) to the Kepler velocity (onset of mass shedding by a rotating deformed star), in the macroscopic MDR model. We use microscopic realistic equations of