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astro-ph2005★ 1 cited
A Galaxy Cluster Near NGC 720
H. Arp
The galaxy cluster RXJ 0152.7-1357 is emitting X-rays at the high rate of 148 counts . It would be one of the most luminous X-ray clusters known if it is at its redshift d…
astro-ph2005★ 2 cited
Periodicities of Quasar Redshifts in Large Area Surveys
H. Arp, C. Fulton, D. Roscoe
We test the periodicity of quasar redshifts in the 2dF and SDSS surveys. In the overall surveys redshift peaks are already apparent in the brighter quasars. But by analyzing sample…