| 在18及6厘米波长对4C 39.25的VLBI观测 |
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| 引用本文： | 吴盛殷,I.I.K.Pauliny-Toth,R.W.Porcas.在18及6厘米波长对4C 39.25的VLBI观测[J].中国天文和天体物理学报,1987(2). |
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| 作者姓名： | 吴盛殷 I.I.K.Pauliny-Toth R.W.Porcas |
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| 作者单位： | 中国科学院北京天文台，马普射电天文研究所，马普射电天文研究所 西德，西德 |
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| 摘 要： | 在18及6厘米,以基线长分别达15及23兆波长的欧洲长基线干涉网(EVN),对类星体4C 39.25作了VLBI观测,试图搜寻该类星体的中等尺度——10到100毫角秒(mas)的结构。 观测未曾检测到这种尺度上超过核峰值亮度5％的明显结构。但核自身看来有2到4毫角秒的延伸,而且其流量可变。
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| 关 键 词： | 类星体 VLBI观测 子源 |
VLBI Observations of 4C39.25 at 18 and 6 cm Wavelengths |
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| Wu Shengyin.VLBI Observations of 4C39.25 at 18 and 6 cm Wavelengths[J].Chinese Journal of Astronomy and Astrophysics,1987(2). |
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| Authors: | Wu Shengyin |
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| Abstract: | VLBI observations at wavelengths of 18 and 6 cm with European baselines of lengths up to 15 and 23 million wavelengths respectively, have been used to search for structure of the quasar 4C39.25 on scales of 10 to 100 milliarcsec.No significant structure on these scales brighter than 5 percent of the peak brightness has been detected. The core itself, however, appears to be extended on a scale of 2 to 4 milliarcsec and to be variable in flux density. |
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| Keywords: | Quasars: V-LBI Observation of-components of |
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