Volume 115, Issue 21
20 November 2015
![](http://cdn.journals.aps.org/journals/PRL/issue_covers/115_21.png)
On the Cover
Lensing by a spherical boson star. The colors represent the four quadrants of the celestial sphere. The black lines represent a grid of latitude and longitude. The white circles are Einstein rings.
From the article:
Shadows of Kerr Black Holes with Scalar Hair
Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu, and Helgi F. Rúnarsson
Phys. Rev. Lett. 115, 211102 (2015)