Lander, Sam K. (2023) The game of life on a magnetar crust: From gamma-ray flares to FRBs. The Astrophysical Journal Letters, 947 (1). ISSN 2041-8205
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Abstract
This Letter presents a model to unify the diverse range of magnetar activity, through the building and release of elastic stress from the crust. A cellular automaton drives both local and global yielding of the crust, leading to braiding of coronal loops and energy release. The model behaves like a real magnetar in many ways: giant flares and small bursts both occur, as well as periods of quiescence whose typical duration is either ≲1 yr or ∼10-30 yr. The burst energy distribution broadly follows an earthquake-like power law over the energy range 10 40-10 45 erg. The local nature of coronal loops allows for the possibility of high-energy and fast radio bursts from the same magnetar. Within this paradigm, magnetar observations can be used to constrain the poorly understood mechanical properties of the neutron-star crust.
Item Type: | Article |
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Uncontrolled Keywords: | astronomy and astrophysics,space and planetary science ,/dk/atira/pure/subjectarea/asjc/3100/3103 |
Faculty \ School: | Faculty of Science > School of Physics (former - to 2024) |
UEA Research Groups: | Faculty of Science > Research Groups > Quantum Matter Faculty of Science > Research Groups > Numerical Simulation, Statistics & Data Science |
Related URLs: | |
Depositing User: | LivePure Connector |
Date Deposited: | 27 Apr 2023 10:30 |
Last Modified: | 07 Nov 2024 12:46 |
URI: | https://ueaeprints.uea.ac.uk/id/eprint/91886 |
DOI: | 10.3847/2041-8213/acca1f |
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