Data di Pubblicazione:
2022
Citazione:
Insights Into the Physics of Neutron Star Interiors from Pulsar Glitches / M. Antonelli, A. Montoli, P.M. Pizzochero - In: Astrophysics in the XXI Century with Compact Stars / [a cura di] C.A.Z. Vasconcellos, F. Weber. - [s.l] : World scientific, 2022. - ISBN 978-981-12-2093-7. - pp. 219-281 [10.1142/9789811220944_0007]
Abstract:
The presence of superfluid phases in the interior of a neutron star affects its dynamics, as neutrons
can flow relative to the non-superfluid (normal) components of the star with little or no viscosity.
A probe of superfluidity comes from pulsar glitches, sudden jumps in the observed rotational period
of radio pulsars. Most models of glitches build on the idea that a superfluid component of the
star is decoupled from the spin-down of the normal component, and its sudden re-coupling leads
to a glitch. This transition in the strength of the hydrodynamic coupling is explained in terms of
quantum vortices (long-lived vortices that are naturally present in the neutron superfluid at the
microscopic scale). After introducing some basic ideas, we derive (as a pedagogical exercise) the
formal scheme shared by many glitch studies. Then, we apply these notions to present some recent
advances and discuss how observations can help us to indirectly probe the internal physics of neutron
stars.
Tipologia IRIS:
03 - Contributo in volume
Elenco autori:
M. Antonelli, A. Montoli, P.M. Pizzochero
Link alla scheda completa:
Titolo del libro:
Astrophysics in the XXI Century with Compact Stars