4 Tests of GR – Strong-Field Gravity

The best-known uses of pulsars for testing the predictions of gravitational theories are those in which the predicted strong-field effects are compared directly against observations. As essentially point-like objects in strong gravitational fields, neutron stars in binary systems provide extraordinarily clean tests of these predictions. This section will cover the relation between the “post-Keplerian” timing parameters and strong-field effects, and then discuss the three binary systems that yield complementary high-precision tests.

 4.1 Post-Keplerian timing parameters
 4.2 The original system: PSR B1913+16
 4.3 PSR B1534+12 and other binary pulsars
 4.4 Combined binary-pulsar tests
 4.5 Independent geometrical information: PSR J0437–4715
 4.6 Spin-orbit coupling and geodetic precession

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