The radio counter-jet of the QSO 3C 48
The radio counter-jet of the QSO 3C 48
复制标题
QSO 3C 48 的无线电反射机
DOI:
10.1051/0004-6361:20042316
复制
发表时间:
2004-12
影响因子:
6.5
通讯作者:
中科院分区:
文献类型:
--
作者:
We present multi- frequency radio observational results of the quasar 3C 48. The observations were carried out with the Very Large Array ( VLA) at five frequencies, 0.33, 1.5, 4.8, 8.4, and 22.5 GHz, and with the Multi- Element Radio Linked Interferometer Network ( MERLIN) at the two frequencies of 1.6 and 5 GHz. The source shows a one- sided jet to the north within 1", which then extends to the northeast and becomes diffuse. Two bright components ( N2 and N3), containing most of the flux density, are present in the northern jet. The spectral index of the two components is alpha(N2) similar to -0.99 +/- 0.12 and alpha(N3) similar to - 0.84 +/- 0.23 ( S proportional to nu(alpha)). Our images show the presence of an extended structure surrounding component N2, suggestive of strong interaction between the jet and the interstellar medium ( ISM) of the host galaxy. A steep- spectrum component, labelled S, located 0.25 " southwest to the flat- spectrum component which could be the core of 3C 48, is detected at a significance of > 15 sigma. Both the location and the steepness of the spectrum of component S suggest the presence of a counter- jet in 3C 48.
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DOI:
10.1046/j.1365-8711.2001.04017.x
发表时间:
2000-09
影响因子:
4.8
作者:
D. Saikia;S. Jeyakumar;Chris J Salter;P. Thomasson;Ralph Spencer;F. Mantovani
通讯作者:
D. Saikia;S. Jeyakumar;Chris J Salter;P. Thomasson;Ralph Spencer;F. Mantovani
影响因子:
64.8
作者:
P. Wilkinson;A. Tzioumis;J. Benson;R. Walker;R. Simon;F. Kahn
通讯作者:
P. Wilkinson;A. Tzioumis;J. Benson;R. Walker;R. Simon;F. Kahn
DOI:
--
发表时间:
1999
期刊:
--
影响因子:
--
作者:
G. Taylor;C. Carilli;R. Perley
通讯作者:
G. Taylor;C. Carilli;R. Perley
DOI:
10.1086/115887
发表时间:
1991-08
期刊:
The Astronomical Journal
影响因子:
--
作者:
A. Stockton;S. Ridgway
通讯作者:
A. Stockton;S. Ridgway
影响因子:
4.8
作者:
J. Peacock;J. Wall
通讯作者:
J. Peacock;J. Wall