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Modelling Magnetar Behaviour with 3D Magnetothermal Simulations

De Grandis, D; Turolla, R; Taverna, R; Wood, TS; Zane, S; (2023) Modelling Magnetar Behaviour with 3D Magnetothermal Simulations. In: Proceedings of the International Astronomical Union. (pp. pp. 280-283). Cambridge University Press (CUP) Green open access

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Abstract

The observational properties of isolated NSs are shaped by their magnetic field and surface temperature. They evolve in a strongly coupled fashion, and modelling them is key in understanding the emission properties of NSs. Much effort was put in tackling this problem in the past but only recently a suitable 3D numerical framework was developed. We present a set of 3D simulations addressing both the long-Term evolution (≈ 104-106 yrs) and short-lived outbursts (â 1 yr). Not only a 3D approach allows one to test complex field geometries, but it is absolutely key to model magnetar outbursts, which observations associate to the appearance of small, inherently asymmetric hot regions. Even though the mechanism that triggers these phenomena is not completely understood, following the evolution of a localised heat injection in the crust serves as a model to study the unfolding of the event.

Type: Proceedings paper
Title: Modelling Magnetar Behaviour with 3D Magnetothermal Simulations
Event: International Astronomical Union Conference
Open access status: An open access version is available from UCL Discovery
DOI: 10.1017/S174392132200031X
Publisher version: https://doi.org/10.1017/S174392132200031X
Language: English
Additional information: Copyright © The Author(s) 2023. Published by Cambridge University Press on behalf of International Astronomical Union. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10171282
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