English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We develop a new perturbation method for determining a class of time transferfunctions in a stationary spacetime when its metric is a small deformation of abackground metric for which the time transfer functions are known in a closedform. The perturbation terms are expressed as line integrals along the nullgeodesic paths of the background metric. Unlike what happens with the otherprocedures proposed until now, the time transfer functions obtained in this wayare completely free of unbounded terms and do not generate any enhancement inthe light travel time. Our procedure proves to be very efficient when thebackground metric is a linearized Schwarzschild-like metric. Its application toan isolated body slowly rotating about an axis of symmetry leads to integralswhich can be calculated with any symbolic computer program. Explicitexpressions are obtained for the mass dipole and quadrupole moments and for theleading gravitomagnetic term induced by the spin of the body. A brief numericaldiscussion is given for the 2002 Cassini experiment.

Time transfer functions without enhanced terms in stationary spacetime -- Application to an isolated, axisymmetric spinning body