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Related Experiment Videos

Looking for light pseudoscalar bosons in the binary pulsar system J0737-3039.

Arnaud Dupays1, Carlo Rizzo, Marco Roncadelli

  • 1Laboratoire Collisions, Agrégats, Réactivité, IRSAMC, CNRS/UPS, 31062 Toulouse, France.

Physical Review Letters
|December 31, 2005
PubMed
Summary

We found that light pseudoscalar bosons (LPBs) can significantly attenuate gamma-ray beams from the J0737-3039 binary pulsar. This effect, observable with the GLAST mission, depends on LPB mass and magnetic field strength.

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Area of Science:

  • Astrophysics
  • Particle Physics
  • High-Energy Astronomy

Background:

  • Binary pulsar systems like J0737-3039 offer unique environments to test fundamental physics.
  • Strong magnetic fields in pulsar magnetospheres can mediate exotic particle interactions.
  • Light pseudoscalar bosons (LPBs) are hypothetical particles that can convert to photons in magnetic fields.

Purpose of the Study:

  • To investigate the potential for LPB-photon oscillations in the J0737-3039 binary pulsar system.
  • To determine if this phenomenon can be observed as an attenuation of pulsar emissions.
  • To explore the dependence of this effect on LPB properties and system geometry.

Main Methods:

  • Numerical calculations of photon-LPB conversion probability.

Related Experiment Videos

  • Modeling the propagation of pulsar light through the companion's magnetosphere.
  • Simulating observational signatures in the gamma-ray energy band.

    • Main Results:

    • A sharp and significant (up to 50%) transition probability for LPB-photon conversion was found.
    • The effect is observable in the gamma-ray domain (> tens of MeV) due to the edge-on orientation of J0737-3039.
    • Attenuation is sensitive to LPB mass and the strength of its two-photon coupling.

    Conclusions:

    • The J0737-3039 system provides a promising target for detecting LPBs via gamma-ray attenuation.
    • Future observations with missions like GLAST could constrain LPB properties.
    • This study highlights the potential of astrophysical systems for discovering new fundamental particles.