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SF-magnetic-stars

The impact of superfluidity and superconductivity on the magneto-thermal evolution and X-ray observations of neutron stars.

Total Cost €

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EC-Contrib. €

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Partnership

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Project "SF-magnetic-stars" data sheet

The following table provides information about the project.

Coordinator
UNIVERSIDAD DE ALICANTE 

Organization address
address: CAMPUS DE SAN VICENTE RASPEIG
city: ALICANTE
postcode: 3690
website: www.ua.es

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Spain [ES]
 Project website https://dfapl.ua.es/en/research/relativistic-astrophysics-group/relativistic-astrophysics-group-personal-webpage-andrea-passamonti.html
 Total cost 170˙121 €
 EC max contribution 170˙121 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2014
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2015
 Duration (year-month-day) from 2015-06-01   to  2017-05-31

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSIDAD DE ALICANTE ES (ALICANTE) coordinator 170˙121.00

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 Project objective

In the last decades, X-ray astronomy provided a wealth of information on the neutron star thermal history, surface temperature distribution, surface magnetic field strength, outburst and flaring activity. It has been recently shown, that many of these different observational properties are deeply influenced by the evolution of the magnetic field and temperature in the neutron star interior. Our understanding of the magnetic field evolution is however still incomplete, as these 2D numerical simulations completely neglect the field evolution in the core. This project will study the magneto-thermal evolution of neutron stars with magnetic fields treading both the core and the crust, incorporating in a consistent way the effects of ambipolar diffusion and superfluidity/superconductivity. This research will explore also models where superconductivity is limited in shells, which are confined in the outer core. They are expected when the core's magnetic field is so strong, above 10^{16} Gauss, to destroy superconductivity. The magneto-thermal evolution will be studied by using 2D numerical simulations, which solve simultaneously the induction equation and the heat transfer equation. The complex magnetic field which results from the magneto-thermal evolution may describe the configuration expected in a flaring magnetar, where quasi-periodic oscillations (QPOs) have been observed. This project will study the QPOs of these complex magnetic field configurations, by using perturbation methods. We will develop a computational framework to determine the properties of seismic vibrations on magnetar's models with any magnetic field topology. The results of this research project and the combined information available from thermal history and magnetar QPOs will be used to determine, by using independent astrophysical observations and dynamical processes, the physical properties of highly magnetized neutron stars as well as to shed light into the equation of state of dense matter.

 Publications

year authors and title journal last update
List of publications.
2016 Andrea Passamonti, José A. Pons
Quasi-periodic oscillations in superfluid, relativistic magnetars with nuclear pasta phases
published pages: 1173-1184, ISSN: 0035-8711, DOI: 10.1093/mnras/stw1880
Monthly Notices of the Royal Astronomical Society 463/2 2019-07-23
2016 Andrea Passamonti, Taner Akgün, José A. Pons, Juan A. Miralles
The relevance of ambipolar diffusion for neutron star evolution
published pages: 3416-3428, ISSN: 0035-8711, DOI: 10.1093/mnras/stw2936
Monthly Notices of the Royal Astronomical Society 465/3 2019-07-23
2017 Andrea Passamonti, Taner Akgun, Jose A. Pons, Juan A. Miralles
On the magnetic field evolution timescale in superconducting neutron star cores
published pages: , ISSN: 0035-8711, DOI: 10.1093/mnras/stx1192
Monthly Notices of the Royal Astronomical Society 469/4 2019-07-23

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The information about "SF-MAGNETIC-STARS" are provided by the European Opendata Portal: CORDIS opendata.

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