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astro-ph1998
The ROSAT Deep Survey IV. A distant lensing cluster of galaxies with a bright arc
G. Hasinger, R. Giacconi, J. E. Gunn +7
An unusual double-lobed extended X-ray source (RX J105343+5735) is detected in the ROSAT ultra-deep HRI image of the Lockman Hole. The angular size of the source is 1.7 X 0.7 arcmi…
astro-ph1994
Recent Developments in Weak Lensing
Nick Kaiser, Gordon Squires, Greg Fahlman +2
Measurement of the gravitational distortion of images of distant galaxies is rapidly becoming established as a powerful probe of the dark mass distribution in clusters of galaxies.…
astro-ph1994
Mapping the Dark Matter in Clusters
Nick Kaiser, Gordon Squires, Greg Fahlman +1
Massive clusters of galaxies gravitationally shear the images of faint background galaxies. At large impact parameters the shear is weak, but can still be measured, to a reasonable…