High resolution studies of the IDV quasar J1128+592

doi:10.1088/1742-6596/218/1/012013

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	High resolution studies of the IDV quasar J1128+592
	Gabanyi, Krisztina Eva 1,2; Marchili, Nicola 3; Krichbaum, Thomas 3; Fuhrmann, Lars 3; Liu, Xiang4 ; Song, Hua-Gang4
	2010-03-01
会议日期	SEP 02-04, 2009
会议地点	Eotvos Univ, Budapest, HUNGARY
关键词	Astrophysics Radio astronomy Telescopes Blazars High resolution Interstellar matter Long baseline array Lower limits Milky ways Modulation models Multi frequency ON time Radio sources Seasonal cycle Time-scales Variability patterns Wavelength regimes
卷号	218
DOI	10.1088/1742-6596/218/1/012013
页码	12013
国家	Hungary
英文摘要	J1128+592 is a compact radio quasar and, as 30% of flat spectrum radio sources, shows fast variations in the cm-wavelength regime on time-scales of an hour to few days. Such phenomenon is often explained by scattering of radio waves in the turbulent, ionized interstellar matter of the Milky Way. Regular monitoring observations of J1128+592 performed by the Effelsberg 100-meter and the Urumqi 25-meter radio telescope during the last four years confirmed this, since a seasonal cycle of the variability time-scale was revealed. This effect is one of the most convincing argument in favor of the interstellar scattering induced fast radio variations in blazars. Multi-epoch, multi-frequency observations made by the Very Long Baseline Array (VLBA) together with the annual modulation model enabled us to determine a lower limit of the distance of the screen responsible for the rapid variability. Additionally, it revealed source-intrinsic-change, which affected the variability pattern. 2010 IOP Publishing Ltd.
源文献作者	ForgacsDajka, E ; Plachy, E ; Molnar, L
产权排序	4
会议录	Journal of Physics: Conference Series 218 (2010) 012013
会议录出版者	Institute of Physics Publishing
会议录出版地	DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
语种	英语
URL标识	查看原文
ISSN号	1742-6588;1742-6596
WOS记录号	WOS:000287785100013
内容类型	会议论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/3139]
专题	星系宇宙学研究团组
通讯作者	Gabanyi, Krisztina Eva
作者单位	1.FOMI Satellite Geodetic Observatory, Budapest, P.O.Box 585 1592 Hungary; 2.Hungarian Academy of Sciences, Research Group for Physical Geodesy and Geodynamics, Budapest, Hungary; 3.Max-Planck-Institute f¨ur Radioastronomie, Auf dem H¨ugel 69, Bonn 53121 Germany; 4.Urumqi Observatory, National Astronomical Observatories, Chinese Academy of Sciences, Urumqi 830011, PR China
推荐引用方式 GB/T 7714	Gabanyi, Krisztina Eva,Marchili, Nicola,Krichbaum, Thomas,et al. High resolution studies of the IDV quasar J1128+592[C]. 见:. Eotvos Univ, Budapest, HUNGARY. SEP 02-04, 2009.