Looking for Structure in Dark Matter with Gravitational Lensing
Will low mass dark matter halos discovered in gravitational lenses tell us about the nature of dark matter?
New probes of cosmology: Doppler Lensing
What do the sizes of galaxies have to tell us about cosmology? Today, we discuss how the velocity of a galaxy can change its observed size and tell us about the properties of the Universe.
Stargazing Live
A spectacular hit with the British public, has Stargazing Live generated an all time high interest in astronomy?
The Lensing Galaxy Cluster That Shouldn’t Exist
The authors discover a strong lensing arc behind an unusually massive galaxy cluster at high redshift. The existence of such a lensing system at high redshift is found to be inconsistent with the standard cosmological model.