The strange case of quiescent and dusty
A series of papers between two research groups, investigating the nature of an unusual distant galaxy.
A series of papers between two research groups, investigating the nature of an unusual distant galaxy.
The redshifts of active galactic nuclei (AGNs) can help us piece together the universe’s evolutionary timeline. Unfortunately, measuring these redshifts can be pretty tricky. In today’s astrobite, we look at a trick for estimating and constraining the redshifts of AGNs that are – ironically enough – partially obscured from our view.
What role did quasars play in reionizing the early universe?
As though cooking up models of the early universe that produce an interesting number of primordial black holes wasn’t hard enough, now we’ve got quantum effects to worry about too. Today’s authors quantify how careful we need to be with models of ultra-slow-roll inflation in order to predict the correct number of primordial black holes that could be around today.
We still lack a good understanding of the source of ionizing photons in the early Universe. Can envelope-stripping from a binary companion help stars to re-ionize the early universe?
The most distant quasar yet discovered illuminates the early universe…