Back to Search Start Over

A real-time automated glitch detection pipeline at Ooty Radio Telescope.

Authors :
Singha, Jaikhomba
Basu, Avishek
Krishnakumar, M A
Joshi, Bhal Chandra
Arumugam, P
Source :
Monthly Notices of the Royal Astronomical Society; Aug2021, Vol. 505 Issue 4, p5488-5496, 9p
Publication Year :
2021

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 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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00358711
Volume :
505
Issue :
4
Database :
Complementary Index
Journal :
Monthly Notices of the Royal Astronomical Society
Publication Type :
Academic Journal
Accession number :
151369283
Full Text :
https://doi.org/10.1093/mnras/stab1640