2011A&A...530A.129M

Query : 2011A&A...530A.129M

2011A&A...530A.129M - Astronomy and Astrophysics, volume 530A, 129-129 (2011/6-1)

On the influence of the Sun on the rapid variability of compact extragalactic sources.

MARCHILI N., KRICHBAUM T.P., LIU X., SONG H.-G., ANDERSON J.M., WITZEL A. and ZENSUS J.A.

Abstract (from CDS):

Since December 2004, we have performed a program to monitor intraday variable sources at a frequency of 5 GHz at the Urumqi Observatory. We present our analysis of the variability characteristics of the flat-spectrum radio source AO 0235+164, which detects an annual cycle in the variability amplitude. This appears to correlate with the solar elongation of the source. A thorough analysis of the results of the MASIV IDV survey - which provides the variability characteristics of a large sample of compact radio sources - confirms that there is a small but detectable component of the observed fractional modulation that increases with decreasing solar elongation. We discuss the hypothesis that the phenomenon is related to interplanetary scintillation.

Abstract Copyright: ∼

Journal keyword(s): scattering - quasars: individual: AO 0235+164 - radio continuum: general - solar wind - surveys

Simbad objects: 10

Full paper

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Number of rows : 10

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	QSO B0235+1624	BLL	02 38 38.93010450	+16 36 59.2745528		16.46	15.50	15.92		~	1488	2
2	ICRF J031857.8+162832	AGN	03 18 57.80304294	+16 28 32.6782325			22.0			~	200	1
3	8C 0716+714	BLL	07 21 53.4482942664	+71 20 36.363846516		15.5	15.50	14.27		~	1249	1
4	4C 71.07	QSO	08 41 24.36528508	+70 53 42.1730435			17.30	16.8		~	744	1
5	6C 091739+622838	QSO	09 21 36.23107643	+62 15 52.1803510		19.76	19.26	18.96		~	343	1
6	QSO B0952+179	QSO	09 54 56.82361677	+17 43 31.2221518		17.31	17.23			~	209	1
7	M 82	IG	09 55 52.430	+69 40 46.93	9.61	9.30	8.41			~	5721	6
8	6C 095456+654857	BLL	09 58 47.2451872176	+65 33 54.819354600			17.0	15.75		~	672	1
9	6C 112519+594222	Bla	11 28 13.34067181	+59 25 14.7985568		19.78	19.56	19.33		~	80	1
10	Ton 599	QSO	11 59 31.83391383	+29 14 43.8268224		14.80	14.41	17.652	13.39	~	890	1

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