Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2011-05-24
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
22 pages, 9 figures, 4 tables, submitted to MNRAS
Scientific paper
We study the effects of an elastic crust on the oscillation spectrum of superfluid neutron stars. Within the two fluid formalism, we consider Newtonian stellar models that include the relevant constituents of a mature neutron stars. The core is formed by a mixture of superfluid neutrons and a conglomerate of charged particles, while the inner crust is described by a lattice of nuclei permeated by superfluid neutrons. We linearise the Poisson and the conservation equations of nonrotating superfluid stars and study the effects of elasticity, entrainment and composition stratification on the shear and acoustic modes. In both the core and the crust, the entrainment is derived from recent results for the nucleon effective mass. Solving the perturbation equations as an eigenvalue problem, we find that the presence of superfluid neutrons in the crust and their large effective mass may have significant impact on the star's oscillation spectrum.
Andersson Nils.
Passamonti Andrea
No associations
LandOfFree
Towards real neutron star seismology: Accounting for elasticity and superfluidity does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Towards real neutron star seismology: Accounting for elasticity and superfluidity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Towards real neutron star seismology: Accounting for elasticity and superfluidity will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-515974