Publication date: Feb 2013
Abstract:
We consider twin-peak quasi-periodic oscillations (QPOs) observed in the
accreting low-mass neutron star (NS) binaries and explore restrictions
to NS properties that are implied by various QPO models. For each model
and each source, the consideration results in a specific relation
between the NS mass M and the angular-momentum j rather than in their
single preferred combination. Furthermore, the inferred restrictions on
NS properties (or QPO models) are weaker for the low-frequency sources
than for the high-frequency sources.
Authors:
Török, Gabriel; Bakala, Pavel; Šrámková, Eva; Stuchlík, Zdeněk; Urbanec, Martin; Goluchová, Kateřina;