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楼主: Auditory-Nerve
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https://doi.org/10.1007/978-1-4419-8252-0etected. Since these arcs are likely the result of gravitational lensing, this observation puts several constraints on the nature of the lensed object. The lack of any broad emission lines limits the possibility of the lensed object being a QSO unless it is at a redshift of greater than 5. If the le
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Nanophotonics in Biomedical Engineering. (1983. Later this compact source was also observed at 8.4 GHz and 5 GHz. Whether this source is the long sought third image or the core of the lensing galaxy has been an open question for several years. The interferometer phases on the most sensitive VLBI baseline suggest that we have observed the third image.
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