A real-time Automated Glitch Detection Pipeline at Ooty Radio Telescope

Abstract

Glitches are the observational manifestations of superfluidity inside neutron stars. The aim of this paper is to describe an automated glitch detection pipeline, which can alert the observers on possible real-time detection of rotational glitches in pulsars. Post alert, the pulsars can be monitored at a higher cadence to measure the post-glitch recovery phase. Two algorithms namely, Median Absolute Deviation (MAD) and polynomial regression have been explored to detect glitches in real time. The pipeline has been optimized with the help of simulated timing residuals for both the algorithms. Based on the simulations, we conclude that the polynomial regression algorithm is significantly more effective for real time glitch detection. The pipeline has been tested on a few published glitches. This pipeline is presently implemented at the Ooty Radio Telescope. In the era of upcoming large telescopes like SKA, several hundreds of pulsars will be observed regularly and such a tool will be useful for both real-time detection as well as optimal utilization of observation time for such glitching pulsars.

arXiv comment10 pages, 6 figures, Accepted for publication in MNRAS

References in corpus (21)

• The ATNF Pulsar Catalogue
• The ATNF Pulsar Catalogue
• TEMPO2, a new pulsar timing package. I: Overview
• PSRCHIVE and PSRFITS An Open Approach to Radio Pulsar Data Storage and Analysis
• Tempo2, a new pulsar timing package. II: The timing model and precision estimates
• DSPSR: Digital Signal Processing Software for Pulsar Astronomy
• A study of 315 glitches in the rotation of 102 pulsars
• Detection of 107 glitches in 36 southern pulsars
• Pulsar timing analysis in the presence of correlated noise
• Timing of young radio pulsars I: Timing noise, periodic modulation and proper motion
• A Micro-glitch in the Millisecond Pulsar B1821-24 in M28
• A glitch in the millisecond pulsar J0613-0200
• Pulsar glitch recovery and the superfluidity coefficients of bulk nuclear matter
• Glitch recoveries in radio-pulsars and magnetars
• PONDER - A Real time software backend for pulsar and IPS observations at the Ooty Radio Telescope
• Core and crust contributions in overshooting glitches: the Vela pulsar 2016 glitch
• Pulsar timing noise and the minimum observation time to detect gravitational waves with pulsar timing arrays
• Optimal Interpolation and Prediction in Pulsar Timing
• Glitch Behavior of Pulsars and Contribution from Neutron Star Crust
• Observed glitches in 8 young pulsars
• Timing noise and the long-term stability of pulsar profiles

Cited by in corpus (5)

• Systematic upper limits on the size of missing pulsar glitches in the first UTMOST open data release
• Revisiting the post-glitch relaxation of the 2000 Vela glitch with the neutron star equation of states in the Brueckner and relativistic Brueckner theories
• Classification of Pulsar Glitch Amplitudes using Extreme Deconvolution
• Pulsar timing irregularities and the Neutron Star interior in the era of SKA: An Indian Outlook
• The ORT and the uGMRT Pulsar Monitoring Program : Pulsar Timing Irregularities & the Gaussian Process Realization