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Number of results

Journal

2010 | 8 | 6 | 989-994

Article title

Magnetohydrodynamic flows as Newtonian-type gravitational motions

Content

Languages of publication

EN

Abstracts

EN
We study the motion of a magnetised, highly conductive fluid within the framework of Newtonian gravity. Our analysis examines whether and under what conditions magnetohydrodynamic flows can be represented as hydrodynamic ones and then as Newtonian-type gravitational motions. In the latter case we define a generalised effective density and an effective Poisson-type potential, which include the magnetic input and determine the dynamics of the magnetised system. Introducing the dynamical equivalence of the aforementioned two representations, we use it to test mass measurements based on purely gravitational motions. We also provide the generalised Raychaudhuri equation corresponding to the aforementioned effective potential and discuss its implications for the kinematics of the fluid.

Publisher

Journal

Year

Volume

8

Issue

6

Pages

989-994

Dates

published
1 - 12 - 2010
online
5 - 9 - 2010

Contributors

  • Department of Astronomy, Aristoteleion University of Thessaloniki, 541.24, Thessaloniki, Greece
  • Department of Astronomy, Aristoteleion University of Thessaloniki, 541.24, Thessaloniki, Greece

References

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Identifiers

YADDA identifier

bwmeta1.element.-psjd-doi-10_2478_s11534-010-0004-1