First results of the glitching pulsar monitoring programme at the Argentine Institute of Radioastronomy
Journal article, 2023

We report here on the first results of a systematic monitoring of southern glitching pulsars at the Argentine Institute of Radioastronomy that started in the year 2019. We detected a major glitch in the Vela pulsar (PSR J0835 - 4510) and two small glitches in PSR J1048 - 5832. For each glitch, we present the measurement of glitch parameters by fitting timing residuals. We then make an individual pulse study of Vela in observations before and after the glitch. We selected 6 days of observations around the major glitch on 2021 July 22 and study their statistical properties with machine learning techniques. We use variational autoencoder (VAE) reconstruction of the pulses to separate them clearly from the noise. We perform a study with self-organizing map (SOM) clustering techniques to search for unusual behaviour of the clusters during the days around the glitch not finding notable qualitative changes. We have also detected and confirmed recent glitches in PSR J0742 - 2822 and PSR J1740 - 3015.

pulsars: Vela

methods: statistical

methods: observational

Author

Ezequiel Zubieta

National University of La Plata

Ryan Missel

Rochester Institute of Technology

Valentina Sosa Fiscella

National University of La Plata

Rochester Institute of Technology

Carlos O. Lousto

Rochester Institute of Technology

Santiago Del Palacio

National University of La Plata

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics

Federico G. Lopez Armengol

Rochester Institute of Technology

Federico Garcia

National University of La Plata

Jorge A. Combi

National University of La Plata

Linwei Wang

Rochester Institute of Technology

Luciano Combi

Rochester Institute of Technology

National University of La Plata

Guillermo Gancio

National University of La Plata

Carolina Negrelli

National University of La Plata

Eduardo M. Gutierrez

National University of La Plata

Monthly Notices of the Royal Astronomical Society

0035-8711 (ISSN) 1365-2966 (eISSN)

Vol. 521 3 4504-4521

Subject Categories

Medical Laboratory and Measurements Technologies

Astronomy, Astrophysics and Cosmology

Atom and Molecular Physics and Optics

DOI

10.1093/mnras/stad723

More information

Latest update

1/8/2024 2