Double-null coordinates for the Vaidya metric

1986 ◽  
Vol 34 (10) ◽  
pp. 2978-2984 ◽  
Author(s):  
B. Waugh ◽  
Kayll Lake
Keyword(s):  



2018 ◽  
Vol 87 (1) ◽  
pp. 014002
Author(s):  
Hristu Culetu


2011 ◽  
Vol 314 ◽  
pp. 012086
Author(s):  
Cecilia Chirenti ◽  
Alberto Saa




2006 ◽  
Vol 74 (8) ◽  
Author(s):  
Elcio Abdalla ◽  
Cecilia B. M. H. Chirenti ◽  
Alberto Saa


Author(s):  
A. V. Nikolaev ◽  
S. D. Maharaj

Abstract The Vaidya metric is important in describing the exterior spacetime of a radiating star and for describing astrophysical processes. In this paper we study embedding properties of the generalized Vaidya metric. We had obtained embedding conditions, for embedding into 5-dimensional Euclidean space, by two different methods and solved them in general. As a result we found the form of the mass function which generates a subclass of the generalized Vaidya metric. Our result is purely geometrical and may be applied to any theory of gravity. When we apply Einstein’s equations we find that the embedding generates an equation of state relating the null string density to the null string pressure. The energy conditions lead to particular metrics including the anti/de Sitter spacetimes.



Author(s):  
Absos Ali Shaikh ◽  
Biswa Ranjan Datta ◽  
Dhyanesh Chakraborty

The Vaidya–Bonner metric is a non-static generalization of Reissner–Nordström metric and this paper deals with the investigation of the curvature restricted geometric properties of such a metric. The scalar curvature vanishes and several pseudosymmetric-type curvature conditions are fulfilled by this metric. Also, it is a [Formula: see text]-quasi-Einstein, [Formula: see text] and generalized Roter type manifold. As a special case, the curvature properties of Reissner–Nordström metric are obtained. It is noted that Vaidya–Bonner metric admits several generalized geometric structures in comparison to Reissner–Nordström metric and Vaidya metric.



1984 ◽  
Vol 100 (2) ◽  
pp. 77-79 ◽  
Author(s):  
M.I. Beciu
Keyword(s):  


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