Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 6 of 6 for “"Tests Of Gravity"”.
-
Tests of Gravity Theories with Pulsar Timing
… clocks in nature. With spinning periods of only a few milliseconds and timescales of the order of years, these astrophysical clocks can easily compete with the best atomic clocks on earth. The fast rotation of the pulsars induces through the lighthouse effect a radio beam that can cross …
-
Source modelling at the dawn of gravitational-wave astronomy
The age of gravitational-wave astronomy has begun. Gravitational waves are propagating spacetime perturbations ($\textit{“ripples in the fabric of space-time”}$) predicted by Einstein’s theory of General Relativity. These signals propagate at the speed of light and are generated by powerful …
-
Investigating the parameter space of viable models for f(R) gravity
The accelerated expansion of spacetime intuitively points to the existence of new, unknown energy fields pervading the universe, but it is has also spurred the growth of the research field of modified gravity theories. Of these, f(R) theories of gravity is the first and simplest modification to …
-
Compact Objects In Relativistic Theories Of Gravity
In this dissertation we discuss several aspects of compact objects, i.e. neutron stars and black holes, in relativistic theories of gravity. We start by studying the role of nuclear physics (encoded in the so-called equation of state) in determining the properties of neutron stars in general …
-
Galaxy-Scale Signatures of Screened Modified Gravities
In recent years, theories of gravity incorporating a scalar field coupled to gravity---'scalar-tensor' theories---have been subject to increased attention. In these theories, the scalar field mediates gravitational-strength 'fifth forces'. For such scalar fields to retain cosmological relevance …
-
Astrophysical tests of modified gravity
Einstein's theory of general relativity has been the accepted theory of gravity for nearly a century but how well have we really tested it? The laws of gravity have been probed in our solar system to extremely high precision using several different tests and general relativity has passed each one …