Discovery, Timing, and Multiwavelength Observations of the Black Widow Millisecond Pulsar PSR J1555–2908

@article{Ray2022DiscoveryTA,
  title={Discovery, Timing, and Multiwavelength Observations of the Black Widow Millisecond Pulsar PSR J1555–2908},
  author={Paul. S. Ray and Lars Nieder and Colin J. Clark and Scott M. Ransom and H. Thankful Cromartie and Dale A. Frail and Kunal P. Mooley and Huib T. Intema and Preshanth Jagannathan and Paul B. Demorest and Kevin Stovall and Jules P. Halpern and Julia S. Deneva and Sebastien Guillot and Matthew Kerr and Samuel J. Swihart and Philippe Bruel and Ben W. Stappers and Andrew G. Lyne and Mitchell Mickaliger and Fernando Camilo and Elizabeth C. Ferrara and Michael T. Wolff and P. F. Michelson},
  journal={The Astrophysical Journal},
  year={2022},
  volume={927}
}
We report the discovery of PSR J1555−2908, a 1.79 ms radio and gamma-ray pulsar in a 5.6 hr binary system with a minimum companion mass of 0.052 M ⊙. This fast and energetic ( Ė=3×1035 erg s−1) millisecond pulsar was first detected as a gamma-ray point source in Fermi Large Area Telescope (LAT) sky survey observations. Guided by a steep-spectrum radio point source in the Fermi error region, we performed a search at 820 MHz with the Green Bank Telescope that first discovered the pulsations. The… 

Is the Black-widow Pulsar PSR J1555–2908 in a Hierarchical Triple System?

The 559 Hz black-widow pulsar PSR J1555−2908, originally discovered in radio, is also a bright gamma-ray pulsar. Timing its pulsations using 12 yr of Fermi-Large Area Telescope gamma-ray data reveals

Optical Light Curve of 4FGL J0935.3+0901: A Flaring Black Widow Candidate

  • J. Halpern
  • Physics
    The Astrophysical Journal Letters
  • 2022
I obtained time-series photometry of the compact binary candidate for the Fermi source 4FGL J0935.3+0901. Superposed on the 2.44 hr orbital modulation are day-to-day variations and frequent flaring

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