Astronomers Unveil New Insights into Rare Pulsar's Emissions with NASA's IXPE

July 15, 2025
Astronomers Unveil New Insights into Rare Pulsar's Emissions with NASA's IXPE
  • Astronomers measured the polarization angles of both X-ray and optical light, finding consistent polarization across wavelengths, which confirms a coherent physical mechanism behind the emissions.

  • These findings suggest that the pulsar wind is the primary energy source in the system, contributing to a shift in understanding neutron star emissions in binary systems.

  • Ongoing studies aim to refine theoretical models about how pulsar winds generate radiation and influence cosmic environments.

  • Maria Cristina Baglio described transitional millisecond pulsars as 'cosmic laboratories' that help scientists understand neutron star evolution within binary systems.

  • The research was enabled by NASA's Imaging X-ray Polarimetry Explorer (IXPE), launched in December 2021, which is a collaborative mission with the Italian Space Agency, and this study marks its first investigation of a transitional millisecond pulsar.

  • Ongoing observations with IXPE are expected to enhance theoretical models of pulsar winds and radiation, providing deeper insights into these extreme cosmic phenomena.

  • During its active state, the pulsar feeds and emits radiation, while in its dormant state, it primarily emits radio wave pulsations, highlighting its transitional nature.

  • The study found that these X-rays originate from the pulsar wind—a stream of particles accelerated to near light speed—rather than from the accretion disk, challenging previous models.

  • An international team of astronomers has used NASA's IXPE and other telescopes to study PSR J1023+0038, a rare transitional millisecond pulsar, revealing new insights into its behavior and emissions.

  • This pulsar, part of a system where a rapidly rotating neutron star feeds off a low-mass companion and forms an accretion disk, switches between active and dormant states, emitting twin beams of light.

  • A key focus of the research was to determine the origin of X-rays emitted by J1023, which are vital for understanding particle acceleration and accretion processes around neutron stars.

Summary based on 2 sources


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