Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2010-10-20
Phys.Rev.D82:124053,2010
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Revised version, to appear in PRD
Scientific paper
10.1103/PhysRevD.82.124053
We use the Raychaudhuri equation to probe certain aspects related to the gravitational collapse of a charged medium. The aim is to identify the stresses the Maxwell field exerts on the fluid and discuss their potential implications. Particular attention is given to those stresses that resist contraction. After looking at the general case, we consider the two opposite limits of poor and high electrical conductivity. In the former there are electric fields but no currents, while in the latter the situation is reversed. When the conductivity is low, we find that the main agents acting against the collapse are the Coulomb forces triggered by the presence of an excess charge. At the ideal Magnetohydrodynamic (MHD) limit, on the other hand, the strongest resistance seems to come from the tension of the magnetic forcelines. In either case, we discuss whether and how the aforementioned resisting stresses may halt the contraction and provide a set of conditions making this likely to happen.
Kouretsis Alexandros P.
Tsagas Christos G.
No associations
LandOfFree
Raychaudhuri's equation and aspects of relativistic charged collapse does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Raychaudhuri's equation and aspects of relativistic charged collapse, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raychaudhuri's equation and aspects of relativistic charged collapse will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-717290