Gravitational Redshift of Galaxies in Clusters from the Sloan Digital Sky Survey and the Baryon Oscillation Spectroscopic Survey

Understand

The gravitational redshift effect allows one to directly probe the gravitational potential in clusters of galaxies.

• Following up on Wojtak et al.
• [Nature (London) 477, 567 (2011)], we present a new measurement.
• We take advantage of new data from the tenth data release of the Sloan Digital Sky Survey and the Baryon Oscillation Spectroscopic Survey.