Quick search Find article
Quick search
Find article

Solvable models of relativistic charged spherically symmetric fluids

Rod Halburd

Show affiliations


It is known that charged relativistic shear-free fluid spheres are described by the equation yxx = f(x)y2 + g(x)y3, where f and g are arbitrary functions of x only and y is a function of x and an external parameter t. Necessary and sufficient conditions on f and g are obtained such that this equation possesses the Painlevé property. In this case the general solution y is given in terms of solutions of the first or second Painlevé equation (or their autonomous versions) and solutions of their linearizations. In the autonomous case we recover the solutions of Wyman, Chatterjee and Sussman and a large class of (apparently new) solutions involving elliptic integrals of the second kind. Solutions arising from the special Airy function solutions of the second Painlevé equation are also given. It is noted that, as in the neutral case, a three-parameter family of choices of f and g are described by solutions of an equation of Chazy type.


PACS

04.40.Nr Einstein-Maxwell spacetimes, spacetimes with fluids, radiation or classical fields

04.20.-q Classical general relativity

MSC

33C10 Bessel and Airy functions, cylinder functions, 0F1

34M55 Painlevé and other special equations; classification, hierarchies; isomonodromic deformations

83C22 Einstein-Maxwell equations

Subjects

Gravitation and cosmology

Dates

Issue 1 (7 January 2001)

Received 3 May 2000



View by subject




Export








Please login to access our web services, or create an account if you don't yet have one.

You must have cookies enabled in your web browser to be able to login.

Username
Password

Forgotten your password? Get a new one here.