NASA NTRS · 19970024722
X-ray search for dark lens objects
Abstract
The quasi-stellar object (QSO) MG 2016+112 is searched for and probably identified as an X-ray cluster of galaxies by the Advanced Satellite for Cosmology and Astrophysics (ASCA) observations. The MG 2016+112 is a gravitational lensed system with three confirmed lensed images of the QSO at a redshift of 3.27. The X-ray spectrum suggests that the new record of the highest redshift of clusters of galaxies, from which X-ray and iron K-line emission were detected, was reached.
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Hattori, M., Ikebe, Y., Asaoka, I., Takeshima, T., Mihara, T., Boehringer, H., Tsuru, T. G., Tamura, T.. 1996-02-01. X-ray search for dark lens objects. https://ntrs.nasa.gov/citations/19970024722
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