Magnetic-field traces within the NS crust initially of our NS magnetothermal simulation, this is, at t = 0. Credit score: Nature Astronomy (2025). DOI: 10.1038/s41550-025-02477-y
A global staff of scientists has modeled the formation and evolution of the most powerful magnetic fields within the universe.
Led via scientists from Newcastle College, College of Leeds and France, the paper used to be revealed within the magazine Nature Astronomy. The researchers known the Tayler-Spruit dynamo led to via the autumn again of supernova subject material as a mechanism resulting in the formation of low-field magnetars. This new paintings solves the thriller of low-field magnetar formation, which has at a loss for words scientists since low-field magnetar discovery in 2010.
The staff used complicated numerical simulations to style the magneto-thermal evolution of those stars, discovering {that a} explicit dynamo procedure inside the proto-neutron famous person can generate those weaker magnetic fields.
Floor temperature distribution and exterior magnetic-field construction at age 200 kyr. Credit score: Nature Astronomy (2025). DOI: 10.1038/s41550-025-02477-y
Investigating sophisticated magnetic fields of neutron stars
Find out about lead creator, Dr. Andrei Igoshev, Analysis Fellow at Newcastle College’s College of Arithmetic, Statistics and Physics, stated, “Neutron stars are born in supernova explosions. Maximum exterior layers of big stars are got rid of all the way through the supernova, however some subject material falls again, making the neutron famous person spin quicker. Researchers display that this procedure performs an important position within the formation of a magnetic subject by means of the Tayler-Spruit dynamo mechanism.
“This mechanism used to be prompt theoretically just about 1 / 4 century in the past, but it surely used to be handiest just lately reproduced the usage of pc simulations. The magnetic subject shaped by means of this mechanism could be very sophisticated with the interior subject within the famous person, which is far more potent than the exterior.”
Magnetars are recognized to have monumental magnetic fields which can be loads of trillions instances more potent than the Earth’s magnetic fields. Because of those fields, magnetars are brilliant and variable assets of X-ray radiation. One of the most much less magnetized stars even have equivalent X-ray emission. Those much less magnetized stars are referred to as low-field magnetars. Dynamo is a mechanism which converts plasma movement into magnetic fields.
Dr. Igoshev is organising a brand new analysis workforce at Newcastle College to additional examine the sophisticated magnetic fields of neutron stars.
Additional info:
Andrei Igoshev et al, A connection between proto-neutron-star Tayler–Spruit dynamos and low-field magnetars, Nature Astronomy (2025). DOI: 10.1038/s41550-025-02477-y
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