Astrophysics Consolidated Grant
Lead Research Organisation:
University of Leeds
Department Name: Applied Mathematics
Abstract
Many astrophysical phenomena involve complex fluid flows and interactions between flows and magnetic fields, often at parameter values far beyond any terrestrial laboratory experiments. We intend to undertake a systematic programme of research to investigate some of these interactions in several astrophysical objects. We shall utilise a combination of analytical and numerical techniques (including the application of state-of-the-art numerical algorithms optimised for use on massively parallel computer facilities) to gain an understanding of such phenomena. Our unifying philosophy is to investigate the fundamental physical interactions in these astrophysical objects and to use expertise gained in one area in order to make progress in other situations with similar underlying dynamics. In all cases we also intend to connect our theoretical/numerical results with astronomically observable quantities. The specific phenomena that we shall address in this proposal are:
(1) Magnetic and thermal evolution of highly magnetised neutron stars, and how this relates to the X-ray emissions observed in such stars.
(2) Tidal flows in stars and planets, and how the energy dissipated by them affects the evolution of extra-solar planetary systems and binary stars.
(3) Dynamics and radiation of highly magnetised relativistic plasma.
(4) The atmospheres of extra-solar planets, and how they respond to extremely asymmetric heating from their parent stars.
(1) Magnetic and thermal evolution of highly magnetised neutron stars, and how this relates to the X-ray emissions observed in such stars.
(2) Tidal flows in stars and planets, and how the energy dissipated by them affects the evolution of extra-solar planetary systems and binary stars.
(3) Dynamics and radiation of highly magnetised relativistic plasma.
(4) The atmospheres of extra-solar planets, and how they respond to extremely asymmetric heating from their parent stars.
Organisations
Publications
Astoul A
(2023)
Tidally Excited Inertial Waves in Stars and Planets: Exploring the Frequency-dependent and Averaged Dissipation with Nonlinear Simulations
in The Astrophysical Journal Letters
Astoul A
(2022)
The effects of non-linearities on tidal flows in the convective envelopes of rotating stars and planets in exoplanetary systems
in Monthly Notices of the Royal Astronomical Society
Barker A
(2024)
On the orbital decay of the gas giant Kepler-1658b
in Monthly Notices of the Royal Astronomical Society
Barker A
(2023)
On the orbital decay of the gas giant Kepler-1658b
De Vries N
(2023)
The interactions of the elliptical instability and convection
in Physics of Fluids
De Vries N
(2023)
The interactions of the elliptical instability and convection
Description | White paper for the STFC about the magneto-thermal evolution of neutron stars |
Geographic Reach | National |
Policy Influence Type | Contribution to a national consultation/review |
URL | https://arxiv.org/pdf/2301.05457.pdf |