Accelerated expansion of the Crab Nebula and evaluation of its neutron-star parameters
arXiv:astro-ph/0301071 · doi:10.1051/0004-6361:20030642
Abstract
A model of an accelerated expansion of the Crab Nebula powered by the spinning-down Crab pulsar is proposed, in which time dependence of the acceleration is connected with evolution of pulsar luminosity. Using recent observational data, we derive estimates of the Crab neutron-star moment of inertia. Correlations between the neutron star moment of inertia and its mass and radius allow for rough estimates of the Crab neutron-star radius and mass. In contrast to the previously used constant-acceleration approximation, even for the expanding nebula mass ~7 M_sun results obtained within our model do not stay in conflict with the modern stiff equations of state of dense matter.
to be submitted to Astronomy & Astrophysics
References in corpus (1)
Cited by in corpus (23)
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