Tests of general relativity from timing the double pulsar

Details Tests of general relativity from timing the double pulsar Tests of general relativity from timing the double pulsar

2006-09-14

arxiv.org/abs/astro-ph/0609417v1

Science314:97-102,2006

Astronomy and Astrophysics

Astrophysics

Appeared in Science Express, Sept. 14, 2006. Includes supporting material

Scientific paper

10.1126/science.1132305

The double pulsar system, PSR J0737-3039A/B, is unique in that both neutron stars are detectable as radio pulsars. This, combined with significantly higher mean orbital velocities and accelerations when compared to other binary pulsars, suggested that the system would become the best available testbed for general relativity and alternative theories of gravity in the strong-field regime. Here we report on precision timing observations taken over the 2.5 years since its discovery and present four independent strong-field tests of general relativity. Use of the theory-independent mass ratio of the two stars makes these tests uniquely different from earlier studies. By measuring relativistic corrections to the Keplerian description of the orbital motion, we find that the ``post-Keplerian'' parameter s agrees with the value predicted by Einstein's theory of general relativity within an uncertainty of 0.05%, the most precise test yet obtained. We also show that the transverse velocity of the system's center of mass is extremely small. Combined with the system's location near the Sun, this result suggests that future tests of gravitational theories with the double pulsar will supersede the best current Solar-system tests. It also implies that the second-born pulsar may have formed differently to the usually assumed core-collapse of a helium star.

Affiliated with

Also associated with

No associations

Rating

Tests of general relativity from timing the double pulsar does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Tests of general relativity from timing the double pulsar, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tests of general relativity from timing the double pulsar will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-537091