Magnification by Gravity
arXiv:1711.04911
Abstract
Gravitational lensing time-delays using standard candles can provide tremendous leverage to cosmology. A recently discovered gravitationally lensed type Ia supernova, iPTF16geu, may yield a precise and accurate measurement of the Hubble constant.
3 pages, 1 figures. News and Views article for Nature Astronomy, Volume 1, id. 0155