Cosmology From the Mouth of the Dragon
In this Astrobite, the authors steal a valuable set of jewels from the Dragon Arc’s hoard: strongly-lensed standard candle stars!
How will the Universe’s cosmic clumps impact future gravitational wave measurements of H0?
Today’s paper explores the impact of clumpy matter on gravitational lensing and measurements of the Hubble Constant.
Less than meets the eye: measuring the bias in galaxy cluster observations
Today’s authors come up with a new way to account for foreground and background galaxies in galaxy cluster measurements.
Here There Be (Star-Filled) Dragons
Today’s paper explores how JWST was able to observe 44 individual stars in a galaxy eight and a half billion light years away!
Zig-zagging across the universe
What’s better than a single gravitational lens? A double gravitational lens! Learn about how light from a distant quasar zig-zags across the universe because of the first double gravitational lens to be observed!
Galaxy Clusters: Your Home for Wings. Lensing. Dark Matter.
Gravitational lensing is a natural result and unique feature of Einstein’s theory of general relativity. It is also an important instrument in the cosmologist’s toolkit. Today’s paper highlights one way astronomers are using gravitational lensing to study dark matter.