PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Czasopismo
2010 | 8 | 6 | 989-994
Tytuł artykułu

Magnetohydrodynamic flows as Newtonian-type gravitational motions

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
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.
Słowa kluczowe
Wydawca

Czasopismo
Rocznik
Tom
8
Numer
6
Strony
989-994
Opis fizyczny
Daty
wydano
2010-12-01
online
2010-09-05
Twórcy
  • Department of Astronomy, Aristoteleion University of Thessaloniki, 541.24, Thessaloniki, Greece, spyrou@astro.auth.gr
  • Department of Astronomy, Aristoteleion University of Thessaloniki, 541.24, Thessaloniki, Greece
Bibliografia
  • [1] U. Klein, R. Wielebinski, H. W. Morsi, Astron. Astrophys. 190, 41 (1988)
  • [2] P. P. Kronberg, Rep. Prog. Phys. 57, 325 (1994) http://dx.doi.org/10.1088/0034-4885/57/4/001[Crossref]
  • [3] J.-L. Han, R. Wielebinski, Chinese J. Astron. Ast. 2, 293 (2002) http://dx.doi.org/10.1088/1009-9271/2/4/293[Crossref]
  • [4] N. I. Shakura, R. A. Sunyaev, Astron. Astrophys. 24, 337 (1973)
  • [5] S. A. Balbus, J. F. Hawley, Astrophys. J. 376, 214 (1991) http://dx.doi.org/10.1086/170270[Crossref]
  • [6] D. Biskamp, Magnetohydrodynamic Turbulense (Cambridge University Press, Cambridge, 2003) http://dx.doi.org/10.1017/CBO9780511535222[Crossref]
  • [7] T. V. Ruzmaikina, A. A. Ruzmaikin, Sov. Astron. 14, 963 (1971)
  • [8] D. Papadopoulos, P. Esposito, Astrophys. J. 257, 10 (1982) http://dx.doi.org/10.1086/159956[Crossref]
  • [9] K. Subramanian, J. D. Barrow, Phys. Rev. D 58, 083502 (1998) http://dx.doi.org/10.1103/PhysRevD.58.083502[Crossref]
  • [10] M. Giovannini, Int. J. Mod. Phys. D 13, 391 (2004) http://dx.doi.org/10.1142/S0218271804004530[Crossref]
  • [11] K. Kleidis, N. K. Spyrou, Classical Quant. Grav. 17, 2965 (2000) http://dx.doi.org/10.1088/0264-9381/17/15/308[Crossref]
  • [12] N. K. Spyrou, C. G. Tsagas, Classical Quant. Grav. 21, 2435 (2004) http://dx.doi.org/10.1088/0264-9381/21/9/017[Crossref]
  • [13] E. N. Parker, Cosmical Magnetic Fields (Oxford University Press, Oxford, 1979)
  • [14] Y. B. Zeldovich, A. A. Ruzmaikin, D. D. Sokoloff, Magnetic Fields in Astrophysics (McGraw-Hill, New York, 1983)
  • [15] L. Mestel, Stellar Magnetism (Oxford University Press, Oxford, 1999)
  • [16] S. Chandrasekhar, Astrophys. J 158, 45 (1969) http://dx.doi.org/10.1086/150170[Crossref]
  • [17] N. K. Spyrou, In: P. G. Laskarides (Ed.), Proceedings of the 6th Hellenic Astronomical Conference (2004) 229, http://www.astro.auth.gr/elaset/helasmtg/2003/
  • [18] N. K. Spyrou, In: N. K. Spyrou, N. Stergioulas, C. Tsagas (Eds.), Cosmology and Gravitational Physics (2006) 57, http://www.astro.auth.gr/Cosmology05/
  • [19] N. K. Spyrou, In: M. Plionis, S. Cotsakis (Eds.), Modern Theoretical and Observational Cosmology (Kluwer Academic Publishers, Netherlands, 2002) 35
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-010-0004-1
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.