Detection of a glitch in the pulsar J1709-4429

Abstract

We report the detection of a glitch event in the pulsar J1709$-$4429 (also known as B1706$-$44) during regular monitoring observations with the Molonglo Observatory Synthesis Telescope (UTMOST). The glitch was found during timing operations, in which we regularly observe over 400 pulsars with up to daily cadence, while commensally searching for Rotating Radio Transients, pulsars, and FRBs. With a fractional size of $\Delta \nu /\nu \approx 52.4\times 10^{-9}$, the glitch reported here is by far the smallest known for this pulsar, attesting to the efficacy of glitch searches with high cadence using UTMOST.

arXiv comment3 pages, 1 figure

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• The UTMOST pulsar timing programme II: Timing noise across the pulsar population
• Pulsar glitch detection with a hidden Markov model
• A polarization census of bright pulsars using the Ultra-Wideband Receiver on the Parkes radio telescope
• Observations of Radio Magnetars with the Deep Space Network
• Systematic upper limits on the size of missing pulsar glitches in the first UTMOST open data release
• The UTMOST Survey for Magnetars, Intermittent pulsars, RRATs and FRBs I: System description and overview
• Effects of periodicity in observation scheduling on parameter estimation of pulsar glitches
• Glitches in four gamma-ray pulsars and inferences on the neutron star structure