Investigation of Intraday Variability of Active Galactic Nuclei in Optical and Radio Ranges

Investigation of Intraday Variability of Active Galactic Nuclei in Optical and Radio Ranges

For detection of intraday flux density variability and the search for their possible correlation in radio and optical wavelengths the combined radio and optical observations of the active galactic nuclei were carried out. The radio sources 0133+476, 1633+382, 2134+004, 2145+067 and 2251+158 were obs...

Повний опис

Збережено в:
Бібліографічні деталі
Дата:2012
Автори: Volvach, A. E., Volvach, L. N., Bychkova, V. S., Kardashev, M. S., Larionov, M. G., Vlasyuk, V. V., Spiridonova, O. I.
Формат: Стаття
Мова:rus
Опубліковано: Видавничий дім «Академперіодика» 2012
Онлайн доступ:http://rpra-journal.org.ua/index.php/ra/article/view/545
Теги: Додати тег
Немає тегів, Будьте першим, хто поставить тег для цього запису!
Назва журналу:Radio physics and radio astronomy

Репозитарії

Radio physics and radio astronomy
id oai:ri.kharkov.ua:article-545
record_format ojs
spelling oai:ri.kharkov.ua:article-5452013-02-10T10:57:33Z Investigation of Intraday Variability of Active Galactic Nuclei in Optical and Radio Ranges Исследование быстрой переменности активных ядер галактик в оптическом и радио диапазонах Volvach, A. E. Volvach, L. N. Bychkova, V. S. Kardashev, M. S. Larionov, M. G. Vlasyuk, V. V. Spiridonova, O. I. For detection of intraday flux density variability and the search for their possible correlation in radio and optical wavelengths the combined radio and optical observations of the active galactic nuclei were carried out. The radio sources 0133+476, 1633+382, 2134+004, 2145+067 and 2251+158 were observed with the CrAO RT-22 at frequencies 22.2 and 36.8 GHz and with the SAO RAS 1-m Zeis- 1000 reflector with CCD camera in 2004-2006. The variation in the R-bands were within 0.2m at time scale 15 min in 0133+476 and 0.25m at time scale 20 min in 2251+158. In the rest of sources no significant flux density variability was observed. In the radio band the flux density variability of the sources 0133+476, 2134+004 was 1.5 Jy at time scale 15 min, and 3 Jy at time scale 2 h in 2145+067. The chaotic fluctuations of the flux density of 2251+158 were observed: 2÷2.5 Jy at time scale 0.5 h. No correlation between the variability in optical and radio wavelengths was observed. С целью обнаружения быстрой (IDV) переменности плотности потока излучения и установления корреляции вариаций потока от источников представлены совместные синхронные наблюдения активных ядер галактик в оптическом и радио диапазонах. Наблюдения радиоисточников 0133+476, 1633+382, 2134+004, 2145+067 и 2251+158 выполнены на РТ-22 КрАО на частотах 22.2 и 36.8 ГГц и на 1-метровом рефлекторе Цейс-1000 с ПЗС системой в R фильтре в САО РАН в 2004-2006 гг. В оптическом диапазоне в полосе R зафиксированы кратковременные вспышки у объекта 0133+476 на 0.2 звездной величины за время 15 мин, у объекта 2251+158 на 0.25 звездной величины за время до 20 мин. В остальных источниках существенных колебаний потока не было обнаружено. В радиодиапазоне изменения потока у источников 0133+476,2134+004 достигали 1.5 Ян за 15 мин, у объекта 2145+067 – до 3 Ян за 2 ч. Зафиксированы хаотические колебания потока у объекта 2251+158: за 0.5 ч на 2÷2.5 Ян. Корреляции между излучением в оптическом и радиодиапазоне обнаружено не было. Видавничий дім «Академперіодика» 2012-12-09 Article Article application/pdf http://rpra-journal.org.ua/index.php/ra/article/view/545 РАДИОФИЗИКА И РАДИОАСТРОНОМИЯ; Vol 13, No 3 (2008); 35 RADIO PHYSICS AND RADIO ASTRONOMY; Vol 13, No 3 (2008); 35 РАДІОФІЗИКА І РАДІОАСТРОНОМІЯ; Vol 13, No 3 (2008); 35 2415-7007 1027-9636 rus http://rpra-journal.org.ua/index.php/ra/article/view/545/119
institution Radio physics and radio astronomy
collection OJS
language rus
format Article
author Volvach, A. E.
Volvach, L. N.
Bychkova, V. S.
Kardashev, M. S.
Larionov, M. G.
Vlasyuk, V. V.
Spiridonova, O. I.
spellingShingle Volvach, A. E.
Volvach, L. N.
Bychkova, V. S.
Kardashev, M. S.
Larionov, M. G.
Vlasyuk, V. V.
Spiridonova, O. I.
Investigation of Intraday Variability of Active Galactic Nuclei in Optical and Radio Ranges
author_facet Volvach, A. E.
Volvach, L. N.
Bychkova, V. S.
Kardashev, M. S.
Larionov, M. G.
Vlasyuk, V. V.
Spiridonova, O. I.
author_sort Volvach, A. E.
title Investigation of Intraday Variability of Active Galactic Nuclei in Optical and Radio Ranges
title_short Investigation of Intraday Variability of Active Galactic Nuclei in Optical and Radio Ranges
title_full Investigation of Intraday Variability of Active Galactic Nuclei in Optical and Radio Ranges
title_fullStr Investigation of Intraday Variability of Active Galactic Nuclei in Optical and Radio Ranges
title_full_unstemmed Investigation of Intraday Variability of Active Galactic Nuclei in Optical and Radio Ranges
title_sort investigation of intraday variability of active galactic nuclei in optical and radio ranges
title_alt Исследование быстрой переменности активных ядер галактик в оптическом и радио диапазонах
description For detection of intraday flux density variability and the search for their possible correlation in radio and optical wavelengths the combined radio and optical observations of the active galactic nuclei were carried out. The radio sources 0133+476, 1633+382, 2134+004, 2145+067 and 2251+158 were observed with the CrAO RT-22 at frequencies 22.2 and 36.8 GHz and with the SAO RAS 1-m Zeis- 1000 reflector with CCD camera in 2004-2006. The variation in the R-bands were within 0.2m at time scale 15 min in 0133+476 and 0.25m at time scale 20 min in 2251+158. In the rest of sources no significant flux density variability was observed. In the radio band the flux density variability of the sources 0133+476, 2134+004 was 1.5 Jy at time scale 15 min, and 3 Jy at time scale 2 h in 2145+067. The chaotic fluctuations of the flux density of 2251+158 were observed: 2÷2.5 Jy at time scale 0.5 h. No correlation between the variability in optical and radio wavelengths was observed.
publisher Видавничий дім «Академперіодика»
publishDate 2012
url http://rpra-journal.org.ua/index.php/ra/article/view/545
work_keys_str_mv AT volvachae investigationofintradayvariabilityofactivegalacticnucleiinopticalandradioranges
AT volvachln investigationofintradayvariabilityofactivegalacticnucleiinopticalandradioranges
AT bychkovavs investigationofintradayvariabilityofactivegalacticnucleiinopticalandradioranges
AT kardashevms investigationofintradayvariabilityofactivegalacticnucleiinopticalandradioranges
AT larionovmg investigationofintradayvariabilityofactivegalacticnucleiinopticalandradioranges
AT vlasyukvv investigationofintradayvariabilityofactivegalacticnucleiinopticalandradioranges
AT spiridonovaoi investigationofintradayvariabilityofactivegalacticnucleiinopticalandradioranges
AT volvachae issledovaniebystrojperemennostiaktivnyhâdergalaktikvoptičeskomiradiodiapazonah
AT volvachln issledovaniebystrojperemennostiaktivnyhâdergalaktikvoptičeskomiradiodiapazonah
AT bychkovavs issledovaniebystrojperemennostiaktivnyhâdergalaktikvoptičeskomiradiodiapazonah
AT kardashevms issledovaniebystrojperemennostiaktivnyhâdergalaktikvoptičeskomiradiodiapazonah
AT larionovmg issledovaniebystrojperemennostiaktivnyhâdergalaktikvoptičeskomiradiodiapazonah
AT vlasyukvv issledovaniebystrojperemennostiaktivnyhâdergalaktikvoptičeskomiradiodiapazonah
AT spiridonovaoi issledovaniebystrojperemennostiaktivnyhâdergalaktikvoptičeskomiradiodiapazonah
first_indexed 2024-05-26T06:32:31Z
last_indexed 2024-05-26T06:32:31Z
_version_ 1800095821412171776

Схожі ресурси