Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985stia...8637056p&link_type=abstract
NATO, Advanced Study Institute on High Energy Phenomena and Collapsed Stars, Cargese, France, Sept. 3-14, 1985, Lecture. May 198
Astronomy and Astrophysics
Astrophysics
Astrophysics, Hadrons, Neutron Stars, Superfluidity, Energy Gaps (Solid State), Equations Of State, Neutrons, Precession, Vortices
Scientific paper
Extensive observations of Her-1 with the Exosat satellite have led to a new understanding of both the dynamics of neutron-star superfluids and the free precession of neutron stars. Detailed microscopic calculations on neutron matter and the properties of the pinned crustal superfluid are provided to serve as a basis for comparing theory with observation on neutron stars. Topics discussed include the Hadron matter equation of state, neutron star structure, Hadron superfluids, the vortex creep theory, Vela pulsar glitches, astrophysical constraints on neutron matter energy gaps, the 35 day periodicity of Her-1, and the neutron matter equation of state. It is concluded that since the post-glitch fits and the identification of the 35th periodicity in Her X-1 as stellar wobble require a rigid neutron matter equation of state, the astrophysical evidence for such an equation seems strong, as well as that for an intermediate Delta(rho) curve.
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