Determination of pseudo-Goldstone boson-photon coupling by the differential time delay of pulsar signals

Abstract

Pseudo-Goldstone bosons couple with photons through a P and T violating interaction of the form ${\mathcal{L}}_{\mathcal{I}}=g_{a\gamma \gamma }aF\tilde{F}$. Strong magnetic fields in rotating compact stars induce a non-zero $\vec{E}\cdot \vec{B}$ outside the stellar surface which acts as a source for the pseudo-scalar field. Pulsar signals propagating through this pseudo-scalar `hair' suffer a differential time lag between the left and the right circularly polarised modes because of the P and T violating pseudoscalar boson-photon interaction. Determination of this time lag upto a microsecond accuracy can lead to a measurment of (or rule out) pseudo-Goldstone boson-photon coupling upto $g_{a\gamma \gamma }\le 4.6\times 10^{-9}Ge{V}^{-1}$.

Plain TeX,12 pages,IP/BBSR/92-92

Cited by in corpus (20)

• Evidence for a new light spin-zero boson from cosmological gamma-ray propagation?
• On a Light Spinless Particle Coupled to Photons
• Gamma Rays from SN1987A due to Pseudoscalar Conversion
• Is there evidence for cosmic anisotropy in the polarization of distant radio sources?
• Axion-Like Particles, Cosmic Magnetic Fields and Gamma-Ray Astrophysics
• Axion superradiance in rotating neutron stars
• Alignments in quasar polarizations: pseudoscalar-photon mixing in the presence of correlated magnetic fields
• Importance of axion-like particles for very-high-energy astrophysics
• Astrophysical Limits on Gravitino Mass
• Optical properties of dynamical axion backgrounds
• Probing angle of birefringence due to long range axion hair from pulsars
• Photon & Axion Oscillation In a Magnetized Medium: A Covariant Treatment
• Optical Activity of a Neutrino Gas
• The Dynamical Mixing of Light and Pseudoscalar Fields
• Signatures of Pseudoscalar Photon Mixing in CMB Radiation
• Pseudoscalar Conversion and X-rays from the Sun
• Constraining axionlike particles using the distance-duality relation
• A complete 3D numerical study of the effects of pseudoscalar-photon mixing on quasar polarizations
• New limit on pseudoscalar-photon mixing from WMAP Observations
• A possible blazar spectral irregularity case caused by photon--axionlike-particle oscillations