Discovery of a Very X-Ray Luminous Galaxy Cluster at [CLC][ITAL]z[/ITAL][/CLC] = 0.89 in the Wide Angle [ITAL]ROSAT[/ITAL] Pointed Survey

H Ebeling,C Scharf,E Perlman,B W Fairley,L R Jones,D Horner

doi:10.1086/318915

Discovery of a Very X-Ray Luminous Galaxy Cluster at [CLC][ITAL]z[/ITAL][/CLC] = 0.89 in the Wide Angle [ITAL]ROSAT[/ITAL] Pointed Survey

H Ebeling, C Scharf + Show 4 more

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https://doi.org/10.1086/318915

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Journal: The Astrophysical Journal	Publication Date: Feb 10, 2001
Citations: 59

Affiliation: W.M. Keck Observatory, California Institute of Technology, Space Telescope Science Institute, Johns Hopkins University, University of Birmingham, University of Maryland, College Park, Goddard Space Flight Center

#Wide Angle ROSAT Pointed Survey #Cl J1226 + Show 8 more

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Abstract

We report the discovery of the galaxy cluster Cl J1226.9+3332 in the Wide Angle ROSAT Pointed Survey (WARPS). At z = 0.888 and LX = 1.1 × 1045 h ergs s-1 (0.5-2.0 keV), Cl J1226.9+3332 is the most distant X-ray luminous cluster currently known. The mere existence of this system represents a huge problem for Ω0 = 1 world models.

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