Data di Pubblicazione:
2018
Citazione:
MODELLING SUPERFLUID NEUTRON STARS APPLICATIONS TO PULSAR GLITCHES / M. Antonelli ; External Referee: Professor Mehmet Ali Alpar, Sabancı Üniversitesi, Mühendislik ve
Doğa Bilimleri Fakültesi,
External referee: Professor Jérôme Novak, LUTH, Observatoire de Paris, PSL Research
University, CNRS,
External Member: Professor Roberto Turolla, Università di Padova, Dipartimento di
Fisica e Astronomia Galileo Galilei,
External Member: Professor Nicolas Chamel, Université Libre de Bruxelles, Institute of
Astronomy and Astrophysics,
External Member: Professor Ian Jones, University of Southampton, Mathematical Sciences ; supervisor: P. M. Pizzochero. DIPARTIMENTO DI FISICA, 2018 Jan 23. 30. ciclo, Anno Accademico 2017. [10.13130/m-antonelli_phd2018-01-23].
Abstract:
In this dissertation I discuss how observations of the maximum glitch occurred in a
certain pulsar provides a test for the microscopic physics of neutron star interiors, in
particular the pinning forces (a parameter which effectively describes the strength of
the vortex-lattice interaction at the mesoscopic scale). Conversely, by fixing the input
parameters by taking estimates from recent literature, it is possible to estimate the mass of
a glitching pulsar. A proof of concept of this thesis is given by constructing a quantitative
model for pulsar rotational dynamics that can consistently encode state of the art models
of the pinning force between vortices and ions in the crust, as well as the stratified structure
of a neutron star. This point is far from being secondary as most studies on pulsar glitches
are based on body-averaged models or differential models that tacitly assume a cylindrical
symmetry, not consistent with the spherically layered structure.
Tipologia IRIS:
Tesi di dottorato
Keywords:
neutron stars; glitches; superfluidity; pinning; vortices
Elenco autori:
M. Antonelli
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