2023MNRAS.521.4504Z


Query : 2023MNRAS.521.4504Z

2023MNRAS.521.4504Z - Mon. Not. R. Astron. Soc., 521, 4504-4521 (2023/May-3)

First results of the glitching pulsar monitoring programme at the Argentine Institute of Radioastronomy.

ZUBIETA E., MISSEL R., SOSA FISCELLA V., LOUSTO C.O., DEL PALACIO S., LOPEZ ARMENGOL F.G., GARCIA F., COMBI J.A., WANG L., COMBI L., GANCIO G., NEGRELLI C. and GUTIERREZ E.M.

Abstract (from CDS):

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.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): pulsars: Vela - methods: observational - methods: statistical

Simbad objects: 13

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Number of rows : 13
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 PSR B0144+59 Psr 01 47 44.6434 +59 22 03.284           ~ 69 0
2 PSR J0437-47 Psr 04 37 15.7994581776 -47 15 08.544351636           DC 1032 0
3 PSR B0736-40 Psr 07 38 32.2620 -40 42 39.420           ~ 212 0
4 PSR B0740-28 Psr 07 42 49.0730 -28 22 43.510           ~ 445 0
5 NAME Vela Pulsar Psr 08 35 20.65525 -45 10 35.1545     15.10     ~ 2446 1
6 PSR B1046-58 Psr 10 48 13.10000 -58 32 03.0000           ~ 293 0
7 PSR B1426-66 Psr 14 30 40.73200 -66 23 05.5460           ~ 102 0
8 PSR B1641-45 Psr 16 44 49.28482 -45 59 09.6360     12.60     ~ 217 0
9 PSR B1706-44 Psr 17 09 42.62000 -44 29 12.0000     13.30     ~ 670 1
10 PSR B1718-35 Psr 17 21 32.76 -35 32 48.3           ~ 86 0
11 PSR B1727-47 Psr 17 31 42.21000 -47 44 38.7000           ~ 166 0
12 PSR B1737-30.2 Psr 17 40 33.98000 -30 15 22.0000           ~ 236 0
13 PSR B2217+47 Psr 22 19 48.139 +47 54 53.93           ~ 230 0

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