My thoughts on what the Hubble tension really is, based on George Efstathiou’s “To H0 or not to H0?“, arXiv:2103.08723.
Yesterday I found out, to my great delight that a proposal for a medium-small grant I applied to from the Blanceflor Foundation has received funding! (so now you know what this “proposal” mentioned in my earlier busy note was about - the “application” mentioned is still pending)
End-of-the-week synopses looking at the possibility of directly detecting dark energy fluctuations using anisotropies in gravitational wave luminosity distances, constraints on baryonic effects from the DES Y1 data, and revisiting constraints on the CMB temperature and whether the latter might have some bearings on the H0 tension. A heads-up that this will be the last entry for the next 5 weeks, as I’m going on holiday. Enjoy, and see you again here in mid-September!
This week’s entry features a new proposal by Ed Witten for hunting Planet 9, a study on signatures of scattering between dark energy and visible matter in cosmological observations, and new constraints on light dark matter produced from primordial black hole evaporation. As usual, comments are welcome, and hope you enjoy!
