This week’s entry is entirely dedicated to galaxy- and lensing-related observational results, with surveys ranging from DES to BOSS to DECaLS (a DESI-related survey). Enjoy!
Top arXiv papers from Week 21, 2020
This week’s entry features the return of the Hubble tension, the first discussion in this blog on the lensing anomaly (Alens tension), and for the second time a discussion on cross-correlations between ultra-high energy cosmic rays and large-scale structure (this time done on real data). As a totally random observation, all three papers discussed this week feature authors which already appeared earlier in this blog. Misha Ivanov already featured on Week 7 (#2), Julien Lesgourgues already featured on Week 11 (again #1!), Marc Kamionkowski already featured on Week 16 (#3), Avi Loeb already featured on Week 15 (#3), and Pavel Motloch already featured with another single-author paper on Week 17 (#3). And no, this is a totally random observation and I’m not trying to imply anything about these authors or the quality of their work (you might want to read my welcome post disclaimers once again), but rather you might start to see some interesting patterns regarding the type of works I am interested in. Enjoy!
Top arXiv papers from Week 19, 2020
This week’s entry features a futuristic way for obtaining a direct geometrical measurement of the Hubble constant using the so-called cosmic secular parallax, a study on the possibility of cross-correlating ultra-high energy cosmic rays and large-scale structure and what we would learn from this cross-correlation, and the second-best constraint on the tidal charge of brane-world black holes from the shadow of M87* detected by the Event Horizon Telescope. Enjoy!
Top arXiv papers from Week 14, 2020
This week’s entry features a new ACT CMB lensing cross BOSS CMASS galaxies cross-correlation measurement implementing a new tSZ-cleaning procedure, a new update on the H0 tension and in particular how fifth forces could lower the TRGB-calibrated measurement (besides the usual Cepheid-calibrated one), and finally the return of black hole shadows (in asymptotically de Sitter spacetime). Enjoy and stay safe!