Testing Relativistic Gravity with Radio Pulsars
By N. Wex. 2014
149 citations recorded by the source corpus.
Before the 1970s, precision tests for gravity theories were constrained to the weak gravitational fields of the Solar system. Hence, only the weak-field slow-motion aspects of relativistic celestial mechanics could be investigated. Testing gravity beyond the first post-Newtonian contributions was for a long time out of reach. The discovery of the first binary pulsar by Russell Hulse and Joseph Taylor in the summer of 1974 initiated a completely new field for testing the relativistic dynamics of gravitationally interacting bodies. For the first time the back reaction of gravitational wave emission on the binary motion could be studied. Furthermore, the Hulse-Taylor pulsar provided the first test bed for the orbital dynamics of strongly self-gravitating bodies. To date there are a number of pulsars known, which can be utilized for precision test of gravity. Depending on their orbital properties and their companion, these pulsars provide tests for various different aspects of relativistic dynamics. Besides tests of specific gravity theories, like general relativity or scalar-tensor gravity, there are pulsars that allow for generic constraints on potential deviations of gravity from general relativity in the quasi-stationary strong-field and the radiative regime. This article presents a brief overview of this modern field of relativistic celestial mechanics, reviews some of the highlights of gravity tests with radio pulsars, and discusses their implications for gravitational physics and astronomy, including the upcoming gravitational wave astronomy.
Subfields: Astronomy and Astrophysics, Oceanography
View Paper: https://www.semanticscholar.org/paper/7efdf339c85f4c837402e18f94c8f26f664c33f0
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Citations in the corpus
- Black hole based tests of general relativity (2016, methodology): “If a binary pulsar system is observed with sufficient precision to measure ⟨ ̇ ⟩ w and two other post-Keplerian parameters, this constitutes a test of GR [3, 4].”
- Dark Energy in Light of Multi-Messenger Gravitational-Wave Astronomy (2018, unknown): “[239] N. Wex (2014), 1402.5594.”
- Testing general relativity with present and future astrophysical observations (2015, background): “Depending on their orbital properties and their companion, these pulsars provide tests for various different aspects of gravity, for instance (see [8], and references therein):”
- Tests of General Relativity with Binary Black Holes from the second LIGO-Virgo Gravitational-Wave Transient Catalog (2020, background): “General relativity (GR) remains our most accurate theory of gravity, having withstood many experimental tests in the Solar System [1] as well as binary pulsar [1, 2], cosmological [3, 4] and gravitational-wave (GW) observations [5–15].”