| タイトル | An unusually strong Einstein ring in the radio source PKS1830 - 211 |
| 著者（英） | Jones, D. L.; Skjerve, L.; Tzioumis, A. K.; Murphy, D. W.; Meier, D. L.; Hoard, D. W.; Lobdell, E. T.; Reynolds, J. E.; Jauncey, D. L.; Preston, R. A. |
| 著者所属（英） | Mount Stromlo and Siding Spring Observatory|Commonwealth Scientific and Industrial Research Organization|Jet Propulsion Lab., California Inst. of Tech.|Nuffield Radio Astronomy Labs. |
| 発行日 | 1991-07-11 |
| 言語 | eng |
| 内容記述 | High-resolution radio images of PKS1830 - 211 are obtained to study the possibility that the double structure is a gravitationally lensed object. The VLBI observations, taken from interferometric radiotelescope networks, reveal an elliptical ring that connects two bright spots of similar composition. Because the lens and the lensed object are closely aligned, and because of the structure of the two spots, the source is concluded to be a radio Einstein ring. The source is found to be close to the galactic plane, and the lens and the lensed object are extragalactic. The source is also found to be unusually bright, suggesting that it is aligned with a bright background source or amplified by some mechanism related to a source that is not so bright. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 91A44797 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/346919 |
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