Tests of Classical Gravity with Radio Pulsars

Kavli Affiliate: Lijing Shao

| First 5 Authors: Zexin Hu, Xueli Miao, Lijing Shao, ,

| Summary:

Tests of gravity are important to the development of our understanding of
gravitation and spacetime. Binary pulsars provide a superb playground for
testing gravity theories. In this chapter we pedagogically review the basics
behind pulsar observations and pulsar timing. We illustrate various recent
strong-field tests of the general relativity (GR) from the Hulse-Taylor pulsar
PSR B1913+16, the double pulsar PSR J0737$-$3039, and the triple pulsar PSR
J0337+1715. We also overview the inner structure of neutron stars (NSs) that
may influence some gravity tests, and have used the scalar-tensor gravity and
massive gravity theories as examples to demonstrate the usefulness of pulsar
timing in constraining specific modified gravity theories. Outlooks to new
radio telescopes for pulsar timing and synergies with other strong-field
gravity tests are also presented.

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