One of the most important issues in cosmology is the Hubble tension – why do different probes not agree on how fast the Universe is expanding? A popular solution is changing the physics in the very early Universe. Today’s paper explores, why this approach might not work, by measuring the expansion rate with observables independent of the early Universe.
Regularly reading papers and keeping on top of current research is a hard task for many graduate students. The solution? Start a journal club! In this bite we give you some tips on how to do that.
What is the curvature of the Universe? Today’s authors use an exciting new probe to find out: Cosmological Clocks.
When astronomers conduct a giant survey, they collect overwhelming amounts of data. But how can we check whether the data is correct? Well, today’s paper applies a mathematical curiosity generally used for detecting tax fraud: Benford’s law.
Black holes come in many different sizes. But is there a mass limit? The authors of today’s paper investigate the possibility of black holes a trillion times as massive as the sun. Surprisingly, they could also help explain the mysterious dark matter!