A multifluid perspective on multimessenger modelling
A multifluid perspective on multimessenger modelling
This brief review introduces the notion of a relativistic multifluid system—a multi-component system with identifiable relative flows—and outlines a set of models for scenarios relevant for different astronomical observation channels. The specific problems used to illustrate the key principles include superfluid hydrodynamics (with relevance for radio and x-ray pulsar timing and gravitational-wave searches), heat flow (connecting to the problem of neutron star cooling and associated x-ray observations) and the coupling between matter and electromagnetism (linking to explosive phenomena like gamma-ray bursts and more subtle issues like the long-term evolution of a neutron star's magnetic field). We also comment on the coupling between matter and radiation, for which the multifluid approach would seem less appropriate. The main motivation of the survey is to illustrate less familiar aspects that come into play in multifluid problems, establish the relevant “language” and provide a platform for more detailed work on these issues.
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Andersson, Nils
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
22 April 2021
Andersson, Nils
2dd6d1ee-cefd-478a-b1ac-e6feedafe304
Andersson, Nils
(2021)
A multifluid perspective on multimessenger modelling.
Frontiers in Astronomy and Space Sciences, 8, , [659476].
(doi:10.3389/fspas.2021.659476).
Abstract
This brief review introduces the notion of a relativistic multifluid system—a multi-component system with identifiable relative flows—and outlines a set of models for scenarios relevant for different astronomical observation channels. The specific problems used to illustrate the key principles include superfluid hydrodynamics (with relevance for radio and x-ray pulsar timing and gravitational-wave searches), heat flow (connecting to the problem of neutron star cooling and associated x-ray observations) and the coupling between matter and electromagnetism (linking to explosive phenomena like gamma-ray bursts and more subtle issues like the long-term evolution of a neutron star's magnetic field). We also comment on the coupling between matter and radiation, for which the multifluid approach would seem less appropriate. The main motivation of the survey is to illustrate less familiar aspects that come into play in multifluid problems, establish the relevant “language” and provide a platform for more detailed work on these issues.
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fspas-08-659476
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Accepted/In Press date: 16 March 2021
Published date: 22 April 2021
Identifiers
Local EPrints ID: 456545
URI: http://eprints.soton.ac.uk/id/eprint/456545
ISSN: 2296-987X
PURE UUID: cf29dbd6-7083-4aee-ad9f-ea13962513fa
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Date deposited: 04 May 2022 17:23
Last modified: 17 Mar 2024 02:47
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