Articulo
Accretion on to strange-matter pulsars
Registro en:
issn:0035-8711
issn:1365-2966
Autor
Benvenuto, Omar Gustavo
Vucetich, Héctor
Horvath, Jorge Ernesto
Institución
Resumen
We study the effects of the accretion of normal matter on to strange-matter pulsar models. It is assumed that, because of the high strangeness barrier, normal matter is inert in contact with Q α matter. For this reason, normal matter accretion is able to form a thick outer layer with densities far above neutron drip. Accretion can make the superfluid quark-alpha Q α a layer disappear by solidification but, for the same reason, a superfluid neutron layer is formed. The fractional moment of inertia of the latter is large enough to fulfil the vortex-creep glitch model requirements. The high rotational stability of millisecond pulsars is discussed in the framework of the strange-matter hypothesis Facultad de Ciencias Astronómicas y Geofísicas Facultad de Ciencias Exactas