A new approach to the vacuum Einstein equation

2006 ◽  
pp. 45-55
Author(s):  
C. N. Kozameh ◽  
E. T. Newman
Keyword(s):  
Einstein Equation ◽  
Vacuum Einstein Equation ◽  
New Approach

The general solution of the vacuum einstein equation in the limit of strong gravity

1988 ◽  
Vol 20 (9) ◽  
pp. 875-880 ◽  
Author(s):  
A. Helfer ◽  
M. S. Hickman ◽  
C. Kozameh ◽  
C. Lucey ◽  
E. T. Newman
Keyword(s):  
General Solution ◽  
Einstein Equation ◽  
Vacuum Einstein Equation ◽  
Strong Gravity

The O–C diagrams of minor planets − a new approach to modelling the rotation

1999 ◽  
Vol 173 ◽  
pp. 185-188
Author(s):  
Gy. Szabó ◽  
K. Sárneczky ◽  
L.L. Kiss
Keyword(s):  
Error Analysis ◽  
Time Dependence ◽  
Theoretical Work ◽  
Minor Planet ◽  
Minor Planets ◽  
New Approach ◽  
Preliminary Results ◽  
Ccd Observations

AbstractA widely used tool in studying quasi-monoperiodic processes is the O–C diagram. This paper deals with the application of this diagram in minor planet studies. The main difference between our approach and the classical O–C diagram is that we transform the epoch (=time) dependence into the geocentric longitude domain. We outline a rotation modelling using this modified O–C and illustrate the abilities with detailed error analysis. The primary assumption, that the monotonity and the shape of this diagram is (almost) independent of the geometry of the asteroids is discussed and tested. The monotonity enables an unambiguous distinction between the prograde and retrograde rotation, thus the four-fold (or in some cases the two-fold) ambiguities can be avoided. This turned out to be the main advantage of the O–C examination. As an extension to the theoretical work, we present some preliminary results on 1727 Mette based on new CCD observations.

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