"Probes and Tests of Strong-Field Gravity with Observations in the Electromagnetic Spectrum"
by
Dimitrios Psaltis
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Abstract
1
Introduction
2
The motivation for strong-field tests
3
Astrophysical and Cosmological Settings of Strong Gravitational Fields
3.1
When is a gravitational field strong?
3.2
A parameter space for tests of gravity
3.3
Probing versus testing strong-field gravity
4
Probing Strong Gravitational Fields with Astrophysical Objects
4.1
Black-hole images
4.2
Continuum spectroscopy of accreting black holes
4.3
Line spectroscopy of accreting compact objects
4.4
The fast variability of accreting compact objects
5
The Need for a Theoretical Framework for Strong-Field Gravity Tests
6
Current Tests of Strong-Field Gravity with Neutron Stars
6.1
Brans–Dicke gravity and the orbital decay of binary systems with neutron stars
6.2
Second-order scalar-tensor gravity and radio pulsars
6.3
Second-order scalar-tensor gravity and X-ray observations of accreting neutron stars
7
Going Beyond Einstein
8
Acknowledgements
References
Footnotes
Figures