The Double Pulsar J0737--3039: Testing the Neutron Star Equation of State

Details The Double Pulsar J0737--3039: Testing the Neutron Star Equation of State The Double Pulsar J0737--3039: Testing the Neutron Star Equation of State

2005-06-23

arxiv.org/abs/astro-ph/0506566v1

Mon.Not.Roy.Astron.Soc.361:1243-1249,2005

Astronomy and Astrophysics

Astrophysics

8 pages, 3 figures, to be published in MNRAS

Scientific paper

10.1111/j.1365-2966.2005.09253.x

The double pulsar J0737--3039 has become an important astrophysical laboratory for testing fundamental physics. Here we demonstrate that the low measured mass of Pulsar B can be used to constrain the equation of state of neutron star matter {\em under the assumption} that it formed in an electron-capture supernova. We show that the observed orbital parameters as well as the likely evolutionary history of the system support such a hypothesis and discuss future refinements that will improve the constraints this test may provide.

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