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September 20, 2025Monthly Notices of the Royal Astronomical SocietyOpen Access

Multiwavelength observations of a new black-widow millisecond pulsar PSR J1544−2555

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Authors

SDSonia DíazTTT ThongmeearkomAPA Phosrisom

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Overview

Observational analysis discovered a black-widow millisecond pulsar, revealing gamma-ray pulsations and orbital characteristics.

Key Points

  • The black-widow millisecond pulsar PSR J1544−2555 exhibits gamma-ray pulsations and a 2.7-hour orbital period.
  • Timing campaigns using various telescopes revealed a preliminary solution over 16 years of Fermi-LAT data.
  • Optical light curve modeling indicates a spot model explaining temperature variations on the companion star.
  • X-ray observations show non-thermal emission, suggesting intra-binary shocks but with insufficient data for pulsation detection.

Cite This Study

Díaz et al. (2025) studied this question.

synapsesocial.com/papers/68d46ab431b076d99fa67b6fhttps://doi.org/10.1093/mnras/staf1544
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