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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 €

EC-Contrib. €

Partnership

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Outcomes and
results

SF-magnetic-stars project word cloud

Explore the words cloud of the SF-magnetic-stars project. It provides you a very rough idea of what is the project "SF-magnetic-stars" about.

stars transfer explore topology oscillations dynamical outer configuration superfluidity consistent simulations flaring shells interior combined computational magneto decades confined limited qpos astrophysical framework numerical periodic perturbation destroy crust observational models star describe equation heat evolution incomplete completely magnetar neutron ambipolar history light outburst configurations temperature superconductivity strength surface astronomy 10 treading thermal induction magnetic quasi 16 simultaneously wealth 2d gauss neglect incorporating vibrations observations physical shown diffusion influenced last magnetized independent shed core seismic deeply ray dense

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 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.	ES (ALICANTE)	coordinator	170˙121.00

Map

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

List of publications.
year	authors and title	journal	last update
2016	Andrea Passamonti, JosÃ© 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 AkgÃ¼n, JosÃ© 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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