Discovery of six high-redshift radio-quiet, X-ray luminous quasars

Details Discovery of six high-redshift radio-quiet, X-ray luminous quasars Discovery of six high-redshift radio-quiet, X-ray luminous quasars

Feb 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999cha%26a..23....1w&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 23, Issue 1, p. 1-5.

Astronomy and Astrophysics

Astrophysics

Scientific paper

We report the discovery of 6 radio-quiet, X-ray luminous quasars with redshifts larger than 1.3. 3 of them have redshifts larger than 2. They were selected from Hamburg objective prism plates and identified by optical spectroscopic observations with the 2.16-m telescope of Beijing Astronomical Observatory. This discovery substantially increases the number of high-redshift radio-quiet, X-ray luminous quasars detected in the ROSAT All Sky Survey.

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