The FAST discovery of an Eclipsing Binary Millisecond Pulsar in the Globular Cluster M92 (NGC 6341)

Abstract

We report the discovery of an eclipsing binary millisecond pulsar in the globular cluster M92 (NGC6341) with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). PSR J1717+4308A, or M92A, has a pulse frequency of 316.5~Hz (3.16~ms) and a dispersion measure of 35.45 pc cm${}^{-3}$. The pulsar is a member of a binary system with an orbital period of 0.20~days around a low-mass companion which has a median mass of $\sim$0.18~\Ms. From observations so far, at least two eclipsing events have been observed in each orbit. The longer one lasted for ~5000~s in the orbital phase range 0.1--0.5. The other lasted for ~500~s and occurred between 1000--2000~s before or after the longer eclipsing event. The lengths of these two eclipsing events also change. These properties suggest that J1717+4308A is a ``red-back'' system with a low-mass main sequence or sub-giant companion. Timing observations of the pulsar and further searches of the data for additional pulsars are ongoing.

arXiv comment9 pages, 2 figures, submitted to ApJL, comments are welcomed!

References in corpus (25)

• A New Electron Density Model for Estimation of Pulsar and FRB Distances
• A Radio Pulsar Spinning at 716 Hz
• The Five-Hundred-Meter Aperture Spherical Radio Telescope (FAST) Project
• Swings between rotation and accretion power in a millisecond binary pulsar
• Fourier Techniques for Very Long Astrophysical Time Series Analysis
• Considerations for a Multi-beam Multi-purpose Survey with FAST
• Twenty-One Millisecond Pulsars in Terzan 5 Using the Green Bank Telescope
• Observations of 20 millisecond pulsars in 47 Tucanae at 20 cm
• A New Search Technique for Short Orbital Period Binary Pulsars
• An eclipsing millisecond pulsar with a possible main-sequence companion in NGC 6397
• The Five-hundred-meter Aperture Spherical Radio Telescope (FAST) Project
• The bright optical companion to the eclipsing millisecond pulsar in NGC 6397
• A Fourier Domain "Jerk" Search for Binary Pulsars
• Pulsar emission amplified and resolved by plasma lensing in an eclipsing binary
• Dynamical Formation of Millisecond Pulsars in Globular Clusters
• Long-term observations of the pulsars in 47 Tucanae. I. A study of four elusive binary systems
• PSR J1723-2837: An Eclipsing Binary Radio Millisecond Pulsar
• A Binary Millisecond Pulsar in Globular Cluster NGC6544
• Heavy Element Dispersion in the Metal-Poor Globular Cluster M92
• Properties and Evolution of the Redback Millisecond Pulsar Binary PSR J2129-0429
• Three Binary Millisecond Pulsars in NGC 6266
• The optical counterpart to the X-ray transient IGR J18245-2452 in the globular cluster M28
• An empirical Bayesian analysis applied to the globular cluster pulsar population
• Unusually bright single pulses from B1744-24A binary: a case of strong lensing?
• ROSAT HRI observations of the globular clusters M13 and M92

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• The Analyses of Globular Clusters Pulsars and Their Detection Efficiency
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