Issue |
A&A
Volume 377, Number 2, October II 2001
|
|
---|---|---|
Page(s) | 701 - 706 | |
Section | Astronomical instrumentation | |
DOI | https://doi.org/10.1051/0004-6361:20010839 | |
Published online | 15 October 2001 |
Fast magnetosonic waves driven by gravitational waves
1
Department of Physics, Aristoteleion University of Thessaloniki, 54006 Thessaloniki, Greece
2
Department of Astrophysics, University of Nijmegen, PO Box 9010, 6500 GL Nijmegen, The Netherlands
3
Astronomical Institute, Utrecht University, PO Box 80 000, 3508 TA Utrecht, The Netherlands
Corresponding author: D. Papadopoulos, papadop@astro.auth.gr
Received:
18
April
2001
Accepted:
7
June
2001
The propagation of a gravitational wave (GW) through a magnetized plasma is considered. In particular, we study the excitation of fast magnetosonic waves (MSW) by a gravitational wave, using the linearized general-relativistic hydromagnetic equations. We derive the dispersion relation for the plasma, treating the gravitational wave as a perturbation in a Minkowski background space-time. We show that the presence of gravitational waves will drive magnetosonic waves in the plasma and discuss the potential astrophysical implications.
Key words: gravitational waves / Magnetohydrodynamics (MHD) / plasmas / relativity
© ESO, 2001
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