Interaction between vortices and nuclei in the inner crust of neutron stars

Journal Article · Mon May 04 00:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3141636· OSTI ID:21304766

Avogadro, P ^[1]; Barranco, F ^[2]; Broglia, R A ^[3]; Vigezzi, E ^[4]

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1. RIKEN, 2-1 Hirosawa, Wako-shi. Saitama 351-0198 (Japan)
2. Departamento de Fisica Aplicada III, Universidad de Sevilla, Escuela Superior de Ingenieros, Sevilla, 41092, Camino de los Descubrimientos s/n (Spain)
3. Dipartimento di Fisica, Universita degli Studi di Milano, Milano, 20133, Via Celoria 16 (Italy) and Niels Bohr Institute, University of Copenhagen, Copenhagen Oe, Blegdamsvej 17 2100 (Denmark)
4. INFN, Sezione di Milano, Milano, 20133, Via Celoria 16 (Italy)

The inner crust of a neutron star is expected to contain a Coulomb lattice of nuclei immersed in a superfluid sea of free neutrons. The rotation of the star induces the formation of vortices in the neutron sea, whose dynamics is influenced by the interaction with the nuclei. In particular, this interaction is important to determine whether it is energetically advantageous for vortices to pin on nuclei or not. We find that the pinning energy is sensitive to quantal size effects. In fact, the nuclear shell structure tends to hinder the formation of vortices inside the nuclear volume.

• OSTI ID: 21304766
• Journal Information: AIP Conference Proceedings, Vol. 1120, Issue 1; Conference: 6. Japan-Italy symposium on heavy-ion physics, Tokai (Japan), 11-15 Nov 2008; Other Information: DOI: 10.1063/1.3141636; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
NEUTRON STARS
NEUTRONS
NUCLEAR MATTER
NUCLEAR STRUCTURE
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
ROTATION
SHELL MODELS
SUPERFLUIDITY
VORTICES