阿根廷射电天文研究所对船帆座2024年重大故障的研究

IF 5.4 2区 物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS
Ezequiel Zubieta, Ryan Missel, Susana B. Araujo Furlan, Carlos O. Lousto, Federico García, Santiago del Palacio, Guillermo Gancio, Jorge A. Combi, Linwei Wang
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引用次数: 0

摘要

上下文。我们在这里报告阿根廷射电天文研究所系统监测南方故障脉冲星的新结果。特别是,我们在这项工作中研究了发生在2024年4月29日的船帆脉冲星(PSR J0835−4510)的新主要故障。我们的目标是彻底表征船帆座脉冲星在其最后一个主要故障周围的旋转行为,并研究其在故障周围的单个脉冲的统计特性。我们通过脉冲星定时技术表征了脉冲星在故障周围的旋转行为。我们通过将时间残差拟合到事件周围几天收集的数据来测量故障参数。此外,我们还研究了船帆座在发生故障之前和之后的观察期间的单个脉冲。我们选择了2024年4月29日主要故障前后9天的观测数据,并使用自组织地图(SOM)技术研究了它们的统计特性。我们使用变分自编码器(VAE)对单个脉冲进行重构,使其与噪声清晰地分离。我们获得了故障的精确定时解决方案。我们发现两种恢复期限分别为~ 3天和~ 17天。我们发现高振幅与窄脉冲的相关性,而在故障前后没有发现显著的定性系统变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study of the 2024 major Vela glitch at the Argentine Institute of Radioastronomy
Context. We report here on new results of the systematic monitoring of southern glitching pulsars at the Argentine Institute of Radioastronomy. In particular, we study in this work the new major glitch in the Vela pulsar (PSR J0835−4510) that occurred on 2024 April 29.Aims. We aim to thoroughly characterise the rotational behaviour of the Vela pulsar around its last major glitch and investigate the statistical properties of its individual pulses around the glitch.Methods. We characterise the rotational behaviour of the pulsar around the glitch through the pulsar timing technique. We measured the glitch parameters by fitting timing residuals to the data collected during the days surrounding the event. In addition, we study Vela individual pulses during the days of observation just before and after the glitch. We selected nine days of observations around the major glitch on 2024 April 29 and studied their statistical properties with the Self-Organizing Maps (SOM) technique. We used Variational AutoEncoder (VAE) reconstruction of the individual pulses to separate them clearly from the noise.Results. We obtain a precise timing solution for the glitch. We find two recovery terms of ∼3 days and ∼17 days. We find a correlation of high amplitude with narrower pulses while not finding notable qualitative systematic changes before and after the glitch.
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来源期刊
Astronomy & Astrophysics
Astronomy & Astrophysics 地学天文-天文与天体物理
CiteScore
10.20
自引率
27.70%
发文量
2105
审稿时长
1-2 weeks
期刊介绍: Astronomy & Astrophysics is an international Journal that publishes papers on all aspects of astronomy and astrophysics (theoretical, observational, and instrumental) independently of the techniques used to obtain the results.
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