FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE

FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE

PACS numbers: 97.60.Gb,98.38.Am Purpose: The fine structure of the anomalously intense pulses of PSR J0814+7429 (В0809+74) has been studied. The pulsar radio emission fine structure is investigated to determine its parameters in the lowest part of spectrum available for groundbased observations.Desi...

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Date:2017
Main Authors: Skoryk, A. O., Ulyanov, O. M., Zakharenko, V. V., Shevtsova, A. I., Vasylieva, I. Y., Plakhov, M. S., Kravtsov, I. M.
Format: Article
Language:Russian
Published: Видавничий дім «Академперіодика» 2017
Subjects:
deconvolution
pulse
magnetosphere
scattering measure
plasma
pulsar
Online Access:http://rpra-journal.org.ua/index.php/ra/article/view/1261
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Radio physics and radio astronomy
id rpra-journalorgua-article-1261
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institution Radio physics and radio astronomy
baseUrl_str
datestamp_date 2020-06-09T10:35:20Z
collection OJS
language Russian
topic deconvolution
pulse
magnetosphere
scattering measure
plasma
pulsar
spellingShingle deconvolution
pulse
magnetosphere
scattering measure
plasma
pulsar
Skoryk, A. O.
Ulyanov, O. M.
Zakharenko, V. V.
Shevtsova, A. I.
Vasylieva, I. Y.
Plakhov, M. S.
Kravtsov, I. M.
FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE
topic_facet deconvolution
pulse
magnetosphere
scattering measure
plasma
pulsar
деконволюция
импульс
магнитосфера
мера рассеяния
плазма
пульсар
деконволюція
імпульс
магнітосфера
міра розсіяння
плазма
пульсар
format Article
author Skoryk, A. O.
Ulyanov, O. M.
Zakharenko, V. V.
Shevtsova, A. I.
Vasylieva, I. Y.
Plakhov, M. S.
Kravtsov, I. M.
author_facet Skoryk, A. O.
Ulyanov, O. M.
Zakharenko, V. V.
Shevtsova, A. I.
Vasylieva, I. Y.
Plakhov, M. S.
Kravtsov, I. M.
author_sort Skoryk, A. O.
title FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE
title_short FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE
title_full FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE
title_fullStr FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE
title_full_unstemmed FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE
title_sort fine structure of anomalously intense pulses of psr j0814+7429 radio emission in the decameter range
title_alt ТОНКАЯ СТРУКТУРА АНОМАЛЬНО ИНТЕНСИВНЫХ ИМПУЛЬСОВ ПУЛЬСАРА J0814+7429 В ДЕКАМЕТРОВОМ ДИАПАЗОНЕ
ТОНКА СТРУКТУРА АНОМАЛЬНО ІНТЕНСИВНИХ ІМПУЛЬСІВ ПУЛЬСАРА J0814+7429 У ДЕКАМЕТРОВОМУ ДІАПАЗОНІ
description PACS numbers: 97.60.Gb,98.38.Am Purpose: The fine structure of the anomalously intense pulses of PSR J0814+7429 (В0809+74) has been studied. The pulsar radio emission fine structure is investigated to determine its parameters in the lowest part of spectrum available for groundbased observations.Design/methodology/approach: The scattering measure in the interstellar plasma have been estimated using the spectral and correlation analyses of pulsar data recorded by the UTR-2 radio telescope. Results: Two characteristic time scales of the anomalously intense pulses fine structure of the PSR J0814+7429 radio emission have been found. The strongest pulses of this pulsar in the decameter range can have a duration of about t 2÷3 ms. These pulses are emitted in short series. In some cases, they are emitted over the low-intensity plateau consisting of the “long” subpulse component. Conclusions: The narrowest correlation scale of pulsar J0814+7429 radio emission corresponds to the doubled scattering time constant of the interstellar medium impulse response. Broader scale of the fine structure of its radio emission can be explained by the radiation of a short series of narrow pulses or relatively broad pulses inside this pulsar magnetosphere.Key words: deconvolution, pulse, magnetosphere, scattering measure, plasma, pulsarManuscript submitted  27.12.2016Radio phys. radio astron. 2017, 22(2): 93-111REFERENCES1. POPOV, M. V. and SMIRNOVA, T. V., 1982. The drift behavior of PSR 0809+74. Sov. Astron. vol. 26, pp. 439–442. 2. MANCHESTER, R. N., HOBBS, G. B., TEOH, A. and HOBBS, M., 2005. The Australia Telescope National Facility Pulsar Catalogue. Astron. J. vol. 129, no. 4, pp. 1993–2006. DOI: https://doi.org/10.1086/428488 3. ATNF PULSAR CATALOG. [online]. 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publisher Видавничий дім «Академперіодика»
publishDate 2017
url http://rpra-journal.org.ua/index.php/ra/article/view/1261
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spelling rpra-journalorgua-article-12612020-06-09T10:35:20Z FINE STRUCTURE OF ANOMALOUSLY INTENSE PULSES OF PSR J0814+7429 RADIO EMISSION IN THE DECAMETER RANGE ТОНКАЯ СТРУКТУРА АНОМАЛЬНО ИНТЕНСИВНЫХ ИМПУЛЬСОВ ПУЛЬСАРА J0814+7429 В ДЕКАМЕТРОВОМ ДИАПАЗОНЕ ТОНКА СТРУКТУРА АНОМАЛЬНО ІНТЕНСИВНИХ ІМПУЛЬСІВ ПУЛЬСАРА J0814+7429 У ДЕКАМЕТРОВОМУ ДІАПАЗОНІ Skoryk, A. O. Ulyanov, O. M. Zakharenko, V. V. Shevtsova, A. I. Vasylieva, I. Y. Plakhov, M. S. Kravtsov, I. M. deconvolution; pulse; magnetosphere; scattering measure; plasma; pulsar деконволюция; импульс; магнитосфера; мера рассеяния; плазма; пульсар деконволюція; імпульс; магнітосфера; міра розсіяння; плазма; пульсар PACS numbers: 97.60.Gb,98.38.Am Purpose: The fine structure of the anomalously intense pulses of PSR J0814+7429 (В0809+74) has been studied. The pulsar radio emission fine structure is investigated to determine its parameters in the lowest part of spectrum available for groundbased observations.Design/methodology/approach: The scattering measure in the interstellar plasma have been estimated using the spectral and correlation analyses of pulsar data recorded by the UTR-2 radio telescope. Results: Two characteristic time scales of the anomalously intense pulses fine structure of the PSR J0814+7429 radio emission have been found. The strongest pulses of this pulsar in the decameter range can have a duration of about t 2÷3 ms. These pulses are emitted in short series. In some cases, they are emitted over the low-intensity plateau consisting of the “long” subpulse component. Conclusions: The narrowest correlation scale of pulsar J0814+7429 radio emission corresponds to the doubled scattering time constant of the interstellar medium impulse response. Broader scale of the fine structure of its radio emission can be explained by the radiation of a short series of narrow pulses or relatively broad pulses inside this pulsar magnetosphere.Key words: deconvolution, pulse, magnetosphere, scattering measure, plasma, pulsarManuscript submitted  27.12.2016Radio phys. radio astron. 2017, 22(2): 93-111REFERENCES1. POPOV, M. V. and SMIRNOVA, T. V., 1982. The drift behavior of PSR 0809+74. Sov. Astron. vol. 26, pp. 439–442. 2. MANCHESTER, R. N., HOBBS, G. B., TEOH, A. and HOBBS, M., 2005. The Australia Telescope National Facility Pulsar Catalogue. Astron. J. vol. 129, no. 4, pp. 1993–2006. DOI: https://doi.org/10.1086/428488 3. ATNF PULSAR CATALOG. [online]. [viewed 21 December 2016]. Available from: http://www.atnf.csiro.au/people/pulsar/psrcat/ 4. HANKINS, T. H., 1971. Microsecond Intensity Variations in the Radio Emissions from CP 0950. Astrophys. J. vol. 169, pp. 487–494. DOI: https://doi.org/10.1086/151164 5. RICKETT, B. J., 1977. 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DOI: https://doi.org/10.1086/164728     УДК 524.354.4; 52-17Предмет и цель работы: Исследуется тонкая структура аномально интенсивных импульсов пульсара J0814+7429 (В0809+74). Изучение тонкой структуры радиоизлучения этого пульсара проводится с целью определения ее параметров в самой низкочастотной области спектра, доступной при наблюдениях с поверхности Земли.Методы и методология: С помощью спектрального и корреляционного анализа данных, зарегистрированных на радиотелескопе УТР-2, получаются оценки меры рассеяния в межзвездной плазме.Результаты: Обнаружено два характерных временных масштаба тонкой структуры аномально интенсивных импульсов пульсара J0814+7429. Установлено, что наиболее интенсивные импульсы, которые генерирует пульсар J0814+7429 в декаметровом диапазоне, могут иметь длительность порядка 2÷3 мс. Эти импульсы излучаются короткими сериями. В некоторых случаях они излучаются на фоне “длинной” субимпульсной компоненты, образующей низкоинтенсивное плато.Заключение: Самый короткий временной масштаб корреляции радиоизлучения у пульсара J0814+7429 соответствует удвоенной постоянной времени рассеяния импульсной характеристики межзвездной среды. Более длинный масштаб тонкой структуры его радиоизлучения может объясняться излучением коротких серий узких импульсов или относительно широких импульсов, которые генерируются внутри магнитосферы этого пульсара.Ключевые слова: деконволюция, импульс, магнитосфера, мера рассеяния, плазма, пульсарСтатья поступила в редакцию 27.12.2016Radio phys. radio astron. 2017, 22(2): 93-111СПИСОК ЛИТЕРАТУРЫ1. Popov M. V. and Smirnova T. V. The drift behavior of PSR 0809+74 // Sov. Astron. – 1982. – Vol. 26. – P. 439–442.2. Manchester R. N., Hobbs G. B., Teoh A., and Hobbs M. The Australia Telescope National Facility Pulsar Catalogue // Astron. J. – 2005. – Vol. 129, No. 4. – P. 1993–2006. 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Дослідження тонкої структури радіовипромінювання цього пульсара виконуються з метою визначення її параметрів у найнижчому частотному діапазоні спектра, що є доступним для спостережень з поверхні Землі.Методи і методологія: За допомогою спектрального та кореляційного аналізу даних, зареєстрованих на радіотелескопі УТР-2, отримуються оцінки міри розсіяння у міжзоряній плазмі.Результати: Виявлено два характерних часових масштаби тонкої структури аномально інтенсивних імпульсів пульсара J0814+7429. Встановлено, що найінтенсивніші імпульси, які генерує пульсар J0814+7429 у декаметровому діапазоні, можуть мати тривалість близько 2  3 мс. Ці імпульси випромінюються короткими серіями. В деяких випадках вони випромінюються на тлі “довгої” субімпульсної компоненти, що утворює низькоінтенсивне плато. Висновок: Найкоротший часовий масштаб кореляції радіовипромінювання пульсара J0814+7429 відповідає подвійній сталій часу розсіяння імпульсної характеристики міжзоряного середовища. Довший масштаб тонкої структури його радіовипромінювання може пояснюватись випромінюванням коротких серій вузьких імпульсів або відносно широких імпульсів, що генеруються всередині магнітосфери цього пульсара.Ключові слова: деконволюція, імпульс, магнітосфера, міра розсіяння, плазма, пульсар Стаття надійшла до редакції 27.12.2016Radio phys. radio astron. 2017, 22(2): 93-111СПИСОК ЛІТЕРАТУРИ 1. Popov M. V. and Smirnova T. V. The drift behavior of PSR 0809+74 // Sov. Astron. – 1982. – Vol. 26. – P. 439–442.2. Manchester R. N., Hobbs G. B., Teoh A., and Hobbs M. The Australia Telescope National Facility Pulsar Catalogue // Astron. J. – 2005. – Vol. 129, No. 4. – P. 1993–2006. DOI: 10.1086/4284883. ATNF Pulsar Catalog. [Электронный ресурс]. [Дата обращения 21.12.2016]. Режим доступа: http://www.atnf.csiro.au/people/pulsar/psrcat/4. Hankins T. H. Microsecond Intensity Variations in the Radio Emissions from CP 0950 // Astrophys. J. – 1971. – Vol. 169. – P. 487–494. DOI: 10.1086/1511645. 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