The Method of Periodic Principal Components for the Dynamic Spectrum of Radio Pulsars and Faraday Rotation of Nine Pulse Components of PSR B0329+54

IF 1.1 4区 物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS Astronomy Letters-A Journal of Astronomy and Space Astrophysics Pub Date : 2024-05-28 DOI:10.1134/S1063773724700051
V. V. Kocharovsky, V. V. Vdovin, A. S. Gavrilov, E. R. Kocharovskaya, S. V. Logvinenko, E. M. Loskutov, V. M. Malofeev
{"title":"The Method of Periodic Principal Components for the Dynamic Spectrum of Radio Pulsars and Faraday Rotation of Nine Pulse Components of PSR B0329+54","authors":"V. V. Kocharovsky,&nbsp;V. V. Vdovin,&nbsp;A. S. Gavrilov,&nbsp;E. R. Kocharovskaya,&nbsp;S. V. Logvinenko,&nbsp;E. M. Loskutov,&nbsp;V. M. Malofeev","doi":"10.1134/S1063773724700051","DOIUrl":null,"url":null,"abstract":"<p>We have developed the method of periodic principal components for signals with a quasi-periodic dynamic spectrum characteristic of radio pulsars. The method is based on an analysis of the eigenvectors and eigenvalues of the signal frequency–time correlation matrix averaged over many pulsar rotation periods. Using the observations of PSR B0329<span>\\(+\\)</span>54 with the radio telescope at Pushchino Radio Astronomy Observatory near a frequency of 111 MHz in a 2.5 MHz band as an example, we show that even for short data intervals (a few minutes) the developed method allows one to identify up to nine pulse components of the pulsar, to estimate the correlation between them, and to find the period of Faraday modulation for each component as well as its relative phase and frequency–time chirp rate, i.e., it allows the structure of the emission source to be judged.</p>","PeriodicalId":55443,"journal":{"name":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","volume":"50 2","pages":"120 - 137"},"PeriodicalIF":1.1000,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astronomy Letters-A Journal of Astronomy and Space Astrophysics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063773724700051","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0

Abstract

We have developed the method of periodic principal components for signals with a quasi-periodic dynamic spectrum characteristic of radio pulsars. The method is based on an analysis of the eigenvectors and eigenvalues of the signal frequency–time correlation matrix averaged over many pulsar rotation periods. Using the observations of PSR B0329\(+\)54 with the radio telescope at Pushchino Radio Astronomy Observatory near a frequency of 111 MHz in a 2.5 MHz band as an example, we show that even for short data intervals (a few minutes) the developed method allows one to identify up to nine pulse components of the pulsar, to estimate the correlation between them, and to find the period of Faraday modulation for each component as well as its relative phase and frequency–time chirp rate, i.e., it allows the structure of the emission source to be judged.

Abstract Image

Abstract Image

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
射电脉冲星动态光谱的周期主成分法和 PSR B0329# 的九个脉冲成分的法拉第旋转法
摘要 我们针对射电脉冲星特有的准周期动态频谱信号开发了周期主成分方法。该方法基于对许多脉冲星自转周期平均信号频率-时间相关矩阵的特征向量和特征值的分析。以普希诺射电天文台射电望远镜在 2.5 兆赫波段 111 兆赫附近对 PSR B0329\(+\)54 的观测为例,我们发现即使数据间隔很短(几分钟),所开发的方法也能识别脉冲星的多达九个脉冲分量,估算它们之间的相关性,并找到每个分量的法拉第调制周期及其相对相位和频率-时间啁啾率,也就是说、它可以判断发射源的结构。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 去求助
来源期刊
CiteScore
1.70
自引率
22.20%
发文量
0
审稿时长
6-12 weeks
期刊介绍: Astronomy Letters is an international peer reviewed journal that publishes the results of original research on all aspects of modern astronomy and astrophysics including high energy astrophysics, cosmology, space astronomy, theoretical astrophysics, radio astronomy, extragalactic astronomy, stellar astronomy, and investigation of the Solar system.
期刊最新文献
Simulation of Images of Protoplanetary Disks after Collision with Free-Floating Planets The \(\boldsymbol{BVR_{c}I_{c}}\) Sky Brightness of the Caucasian Mountain Observatory of MSU Measuring the Magnetic Field Strength of a Transient X-ray Pulsar 4U 1901+03 by Its Variability on Different Time Scales Interaction of Accretion and Circumstellar Extinction as a Cause of Unusual Variability in the WTTS Star V715 Per Production of Positrons in the Galactic Center by Subrelativistic Protons and Nuclei
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1