Discovery of a [CLC][ITAL]z[/ITAL][/CLC] = 4.93, X-Ray–selected Quasar by the [ITAL]Chandra[/ITAL] Multiwavelength Project (C[CLC]ha[/CLC]MP)
Citations Over TimeTop 10% of 2002 papers
Abstract
We present X-ray and optical observations of CXOMP J213945.0-234655, a high-redshift (z = 4.93) quasar discovered through the Chandra Multiwavelength Project (ChaMP). This object is the most distant X-ray-selected quasar published, with a rest-frame X-ray luminosity of LX = 5.9 × 1044 ergs s-1 (measured in the 0.3-2.5 keV band and corrected for Galactic absorption). CXOMP J213945.0-234655 is a g' dropout object (>26.2), with r' = 22.87 and i' = 21.36. The rest-frame X-ray-to-optical flux ratio is similar to quasars at lower redshifts and slightly X-ray bright relative to z > 4 optically selected quasars observed with Chandra. The ChaMP is beginning to acquire significant numbers of high-redshift quasars to investigate the X-ray luminosity function out to z ~ 5.
Related Papers
- → THE CANADA-FRANCE HIGH-zQUASAR SURVEY: NINE NEW QUASARS AND THE LUMINOSITY FUNCTION AT REDSHIFT 6(2010)492 cited
- → Long-timescale X-Ray Variability of BAL and Mini-BAL Quasars(2020)1 cited
- → Quasars: Cosmological Evolution and X-Ray Background Contribution(1986)
- → Quasars and Active Galactic Nuclei(2002)
- → A search for signatures of quasar evolution: Comparison of the shapes of the rest-frame optical/UV continua of quasars at z>3 and z~0.1(2001)