EG6 - Compact Binaries and Strong-Field Tests of Gravity |
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Speaker |
Freire, Paulo |
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Talk Title |
The deceptively boring binary millisecond pulsar PSR J1738+0333 - a great laboratory for testing the strong equivalence principle. |
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Abstract |
In this talk we present the results of the high-precision timing of PSR J1738+0333 carried out at Arecibo for the last 6 years. This 5.85-ms pulsar is part of a binary system with a circular, 8.5-hour orbit and a white dwarf companion. The recent detection of the companion and measurement of its orbital velocity amplitude provide a mass ratio for the system (8.1 +/- 0.3). The recent detection of the orbital decay due to the emission of gravitational waves allow, assuming GR, a low-precision measurement of the mass of the pulsar and the mass of the companion. We discuss how this system constrains dipolar gravitational wave emission and might become the best binary system known for testing the strong equivalence principle. |
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