A disrupted radio jet inside the host galaxy of the quasar 3C48
A disrupted radio jet inside the host galaxy of the quasar 3C48
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DOI：
10.1038/352313a0
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发表时间：
1991-07
期刊：
影响因子：
64.8
通讯作者：
P. Wilkinson;A. Tzioumis;J. Benson;R. Walker;R. Simon;F. Kahn
中科院分区：
文献类型：
--
作者：
P. Wilkinson;A. Tzioumis;J. Benson;R. Walker;R. Simon;F. Kahn
附近的类星体3C48是第一个被光学识别的[1]，它的红移z= 0.368（参考文献2）是继3C2733之后第二个被确定的。尽管如此，它的详细射电结构仍然不清楚，因为它的角尺寸，101角秒，是如此之小。我们在这里提出了一个新的无线电图像，分辨率<10 mas，由甚长基线干涉测量使用17个望远镜阵列。我们发现一个高度中断的无线电喷流与标准的高光度射电源中发现的完全不同。喷流位于类星体的富含气体的宿主星系内部，我们认为它的不规则形状是由于与宿主星系星际介质中的致密气体团碰撞，而不是产生喷流的中央引擎的任何不规则或进动。
THE nearby quasar 3C48 was the first to be optically identified1, and its redshift,z= 0.368 (ref. 2), was the second, after that of 3C2733, to be determined. Despite this pedigree, its detailed radio structure has remained obscure because its angular size, ˜ 1 arcsec, is so small. We present here a new radio image, with resolution <10 mas, made by very-long-baseline interferometry using an array of 17 telescopes. We find a highly disrupted radio jet quite different from those found in standard high-luminosity radio sources. The jet lies well within the body of the gas-rich host galaxy of the quasar, and we believe that its irregular shape is due to collision with a dense clump of gas in the interstellar medium of the host galaxy, rather than to any irregularity or precession of the central engine that produces the jet.