Full sky map of bright quasars

Full sky map of all measurements of the fine-structure constant along the line of sight of bright quasars, in early 2019. Overall there is a 3.5 sigma statistical preference for a dipolar spatial variation. The preferred direction of maximal variation is inside the solid red line, and the dashed blue line depicts the equator of the dipole.

Mike Wilczynska and John K. Webb

About the Image

Release date:30 September 2020, 13:53
Size:1058 x 595 px

About the Object

Type:Local Universe : Galaxy : Activity : AGN : Quasar
Early Universe : Galaxy : Activity : AGN : Quasar

Image Formats

Large JPEG
130.8 KB
Screensize JPEG
116.7 KB