Lense-Thirring frame dragging induced by a fast-rotating white dwarf in a binary pulsar system

Radio pulsars in short-period eccentric binary orbits can be used to study both gravitational dynamics and binary evolution. The binary system containing PSR J1141-6545 includes a massive white dwarf (WD) companion that formed before the gravitationally bound young radio pulsar. We observed a tempor...

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Published in:Science (American Association for the Advancement of Science) 2020-01, Vol.367 (6477), p.577-580
Main Authors: Krishnan, V Venkatraman, Bailes, M, van Straten, W, Wex, N, Freire, P C C, Keane, E F, Tauris, T M, Rosado, P A, Bhat, N D R, Flynn, C, Jameson, A, Osłowski, S
Format: Article
Language:English
Subjects:
Binary system
Companion stars
Drift
Eccentric orbits
Evolution
Gravity
Inclination
Precession
Predictions
Pulsars
Quadrupoles
Radio
Relativity
Rotation
Stellar system evolution
Theory of relativity
White dwarf stars
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container_title Science (American Association for the Advancement of Science)
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creator Krishnan, V Venkatraman
Bailes, M
van Straten, W
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Freire, P C C
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Tauris, T M
Rosado, P A
Bhat, N D R
Flynn, C
Jameson, A
Osłowski, S
description Radio pulsars in short-period eccentric binary orbits can be used to study both gravitational dynamics and binary evolution. The binary system containing PSR J1141-6545 includes a massive white dwarf (WD) companion that formed before the gravitationally bound young radio pulsar. We observed a temporal evolution of the orbital inclination of this pulsar that we infer is caused by a combination of a Newtonian quadrupole moment and Lense-Thirring (LT) precession of the orbit resulting from rapid rotation of the WD. LT precession, an effect of relativistic frame dragging, is a prediction of general relativity. This detection is consistent with an evolutionary scenario in which the WD accreted matter from the pulsar progenitor, spinning up the WD to a period of
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source Science magazine suite; Alma/SFX Local Collection
subjects Binary system
Companion stars
Drift
Eccentric orbits
Evolution
Gravity
Inclination
Precession
Predictions
Pulsars
Quadrupoles
Radio
Relativity
Rotation
Stellar system evolution
Theory of relativity
White dwarf stars
title Lense-Thirring frame dragging induced by a fast-rotating white dwarf in a binary pulsar system
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