Sporadic Radiation of Radio Astronomy Sources and its Study at Decameter Wavelengths
Sporadic (transient) radiation, being bursts and pulses with typical duration from hours to seconds or less, indicate the presence of compact sources or regions where explosive or dynamic events occur. Thus, the transient radio emission allows studying the internal structure and nature of various ob...
Збережено в:
| Дата: | 2012 |
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| Автор: | |
| Формат: | Стаття |
| Мова: | rus |
| Опубліковано: |
Видавничий дім «Академперіодика»
2012
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| Онлайн доступ: | http://rpra-journal.org.ua/index.php/ra/article/view/438 |
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| Назва журналу: | Radio physics and radio astronomy |
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Radio physics and radio astronomy| id |
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oai:ri.kharkov.ua:article-4382012-11-10T10:58:29Z Sporadic Radiation of Radio Astronomy Sources and its Study at Decameter Wavelengths Спорадическое излучение радиоастрономических источников и его исследование в декаметровом диапазоне Zakharenko, V. V. Sporadic (transient) radiation, being bursts and pulses with typical duration from hours to seconds or less, indicate the presence of compact sources or regions where explosive or dynamic events occur. Thus, the transient radio emission allows studying the internal structure and nature of various objects, including the fundamental astrophysical aspects, while the effects of scattering and Faraday rotation of the polarization plane the properties of the medium in which the radio emission is distributed. The world-largest UTR-2 decameter wavelength radio telescope, equipped with the state-of-the-art receiving and recording equipment, allows investigating the pulsed and transient emissions for a wide range of galactic and extragalactic sources. Substantial advantages of the UTR-2 are its high sensitivity and broadbandness (up to two octaves) that allows investigating the spectral characteristics within the decameter wavelengths. Analysis of the characteristic features of radio emission of known and prospective classes of sources (including different types of stars, extrasolar planets, solar system sporadic radiation) is necessary in preparation for the full survey of the northern sky to search for pulsars and transient sources at decameter wavelenghts. It is essentially important to define the limitations of existing means of observations in order to formulate the goals and lines of development of the next-generation radio telescopes such as LOFAR and Giant Ukrainian Radio Telescope (GURT). Спорадическое (транзиентное) излучение – всплески и импульсы с характерной длительностью от часов до секунд и менее – свидетельствует о наличии компактных источников или областей, в которых происходят взрывные или динамические события. Таким образом, транзиентное радио- излучение позволяет исследовать внутреннюю структуру и природу различных объектов, включая фундаментальные астрофизические аспекты, а эффекты рассеяния и фарадеевского вращения плос- кости поляризации – свойства среды, в которой это радиоизлучение распространяется. Крупнейший в мире декаметровый радиотелескоп УТР-2, оснащенный современной приемной и регистрирующей аппаратурой, позволяет исследовать импульсное и спорадическое излучение широкого спектра галактических и внегалактических источников. Существенными преимущества- ми УТР-2 является высокая чувствительность и широкополосность (до двух октав), которые позво- ляют исследовать спектральные характеристики в декаметровом диапазоне. Анализ характерных признаков радиоизлучения известных и предполагаемых классов источников (включая различные типы звезд, экзопланет, спорадического излучения объектов Солнечной системы) является необхо- димым для готовящегося полного обзора Северного неба с целью поиска пульсаров и транзиентных источников в декаметровом диапазоне. Не менее важно определить ограничения, присущие су- ществующим средствам наблюдения, чтобы сформулировать цели и направления развития нового поколения радиотелескопов, таких, как Гигантский Украинский Радиотелескоп (ГУРТ) и ЛОФАР. Видавничий дім «Академперіодика» 2012-11-04 Article Article application/pdf http://rpra-journal.org.ua/index.php/ra/article/view/438 РАДИОФИЗИКА И РАДИОАСТРОНОМИЯ; Vol 16, No 2 (2011); 121 RADIO PHYSICS AND RADIO ASTRONOMY; Vol 16, No 2 (2011); 121 РАДІОФІЗИКА І РАДІОАСТРОНОМІЯ; Vol 16, No 2 (2011); 121 2415-7007 1027-9636 rus http://rpra-journal.org.ua/index.php/ra/article/view/438/1 |
| institution |
Radio physics and radio astronomy |
| collection |
OJS |
| language |
rus |
| format |
Article |
| author |
Zakharenko, V. V. |
| spellingShingle |
Zakharenko, V. V. Sporadic Radiation of Radio Astronomy Sources and its Study at Decameter Wavelengths |
| author_facet |
Zakharenko, V. V. |
| author_sort |
Zakharenko, V. V. |
| title |
Sporadic Radiation of Radio Astronomy Sources and its Study at Decameter Wavelengths |
| title_short |
Sporadic Radiation of Radio Astronomy Sources and its Study at Decameter Wavelengths |
| title_full |
Sporadic Radiation of Radio Astronomy Sources and its Study at Decameter Wavelengths |
| title_fullStr |
Sporadic Radiation of Radio Astronomy Sources and its Study at Decameter Wavelengths |
| title_full_unstemmed |
Sporadic Radiation of Radio Astronomy Sources and its Study at Decameter Wavelengths |
| title_sort |
sporadic radiation of radio astronomy sources and its study at decameter wavelengths |
| title_alt |
Спорадическое излучение радиоастрономических источников и его исследование в декаметровом диапазоне |
| description |
Sporadic (transient) radiation, being bursts and pulses with typical duration from hours to seconds or less, indicate the presence of compact sources or regions where explosive or dynamic events occur. Thus, the transient radio emission allows studying the internal structure and nature of various objects, including the fundamental astrophysical aspects, while the effects of scattering and Faraday rotation of the polarization plane the properties of the medium in which the radio emission is distributed. The world-largest UTR-2 decameter wavelength radio telescope, equipped with the state-of-the-art receiving and recording equipment, allows investigating the pulsed and transient emissions for a wide range of galactic and extragalactic sources. Substantial advantages of the UTR-2 are its high sensitivity and broadbandness (up to two octaves) that allows investigating the spectral characteristics within the decameter wavelengths. Analysis of the characteristic features of radio emission of known and prospective classes of sources (including different types of stars, extrasolar planets, solar system sporadic radiation) is necessary in preparation for the full survey of the northern sky to search for pulsars and transient sources at decameter wavelenghts. It is essentially important to define the limitations of existing means of observations in order to formulate the goals and lines of development of the next-generation radio telescopes such as LOFAR and Giant Ukrainian Radio Telescope (GURT). |
| publisher |
Видавничий дім «Академперіодика» |
| publishDate |
2012 |
| url |
http://rpra-journal.org.ua/index.php/ra/article/view/438 |
| work_keys_str_mv |
AT zakharenkovv sporadicradiationofradioastronomysourcesanditsstudyatdecameterwavelengths AT zakharenkovv sporadičeskoeizlučenieradioastronomičeskihistočnikoviegoissledovanievdekametrovomdiapazone |
| first_indexed |
2024-05-26T06:33:01Z |
| last_indexed |
2024-05-26T06:33:01Z |
| _version_ |
1800095852243451904 |