From microphysics to dynamics of magnetars

Abstract

MeV-scale magnetic fields in the interiors of magnetars suppress the pairing of neutrons and protons in the $S$-wave state. In the case of a neutron condensate the suppression is the consequence of the Pauli-paramagnetism of the neutron gas, i.e., the alignment of the neutron spins along the magnetic field. The proton $S$-wave pairing is suppressed because of the Landau diamagnetic currents of protons induced by the field. The Ginzburg-Landau and BCS theories of the critical magnetic fields for unpairing are reviewed. The macrophysical implications of the suppression (unpairing) of the condensates are discussed for the rotational crust-core coupling in magnetars and the neutrino-dominated cooling era of their thermal evolution.

10 pages, 4 figures, Proceedings of "Compact Stars in the QCD phase diagram V", 23-27 May 2016 GSSI and LNGS, L'Aquila, Italy

References in corpus (9)

• Magnetars: Properties, Origin and Evolution
• Consistent neutron star models with magnetic field dependent equations of state
• Magnetically-driven crustquakes in neutron stars
• Neutrino emission due to Cooper-pair recombination in neutron stars revisited
• Magnetar superconductivity versus magnetism: neutrino cooling processes
• Vertex renormalization in weak decays of Cooper pairs and cooling compact stars
• Superfluid Response and the Neutrino Emissivity of Neutron Matter
• Rapid rotational crust-core relaxation in magnetars
• Conventional and Unconventional Pairing and Condensates in Dilute Nuclear Matter

Cited by in corpus (5)

• Equation of state of strongly magnetized matter with hyperons and $\Delta$-resonances
• Fast magnetic field evolution in neutron stars: the key role of magnetically induced fluid motions in the core
• Relativistic Dynamics of Point Magnetic Moment
• Magnetically supramassive neutron stars
• Pairing effects in nuclear pasta phase within the relativistic Thomas-Fermi formalism