Limit on Continuous Neutrino Emission from Neutron Stars

Abstract

The timing data of the binary pulsar PSR1913+16, are used to establish an upper limit on the rate of continuous neutrino emission from neutron stars. Neutrino emission from each of the neutron stars of the binary system, increases the star binding energy and thus translates to a decrease in their masses. This in turn implies an increase with time of the binary period. Using the pulsar data we obtain an upper limit on the allowed rate of mass reduction : $|\dot{M}|<1.1\times 10^{-12}y{r}^{-1}M$, where $M$ is the total mass of the binary. This constrains exotic nuclear equations of state that predict continuous neutrino emissions. The limit applies also to other channels of energy loss, e.g. axion emission. Continued timing measurements of additional binary pulsars, should yield a stronger limit in the future.

5 pages, Added a section on energy transport in the neutron star, JHEP published

References in corpus (5)

• The Confrontation between General Relativity and Experiment
• Probing Cold Dense Nuclear Matter
• The Diffuse Supernova Neutrino Background is detectable in Super-Kamiokande
• Neutrino Emission from Cooper Pairs and Minimal Cooling of Neutron Stars
• Millisecond Pulsar Ages: Implications of Binary Evolution and a Maximum Spin Limit

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• Neutron-Mirror-Neutron Oscillation and Neutron Star Cooling
• Constraints on Neutron-Mirror-Neutron Oscillation from Neutron Star Cooling
• Probing Dark Sectors with Neutron Stars
• How Macroscopic Limits on Neutron Star Baryon Loss Yield Microscopic Limits on Non-Standard-Model Baryon Decay
• Effects of Neutron-Antineutron Transitions in Neutron Stars
• Astrophysical bounds on mirror dark matter derived from binary pulsars timing data