Kavli Affiliate: Roberto Maiolino | First 5 Authors: Stefano Carniani, Francesco D’Eugenio, Xihan Ji, Eleonora Parlanti, Jan Scholtz | Summary: JADES-GS-z14-0 is the most distant spectroscopically confirmed galaxy yet, at $z>14$. With a UV magnitude of -20.81, it is one of the most luminous galaxies at cosmic dawn and its half-light radius of 260 pc […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Tibor Dome, Simon May, Alex Laguë, David J. E. Marsh, Sarah Johnston | Summary: We study the implications of relaxing the requirement for ultralight axions to account for all dark matter in the Universe by examining mixed dark matter (MDM) cosmologies with axion fractions $f leq 0.3$ […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Tibor Dome, Simon May, Alex Laguë, David J. E. Marsh, Sarah Johnston | Summary: We study the implications of relaxing the requirement for ultralight axions to account for all dark matter in the Universe by examining mixed dark matter (MDM) cosmologies with axion fractions $f leq 0.3$ […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Tiger Yu-Yang Hsiao, Michael W. Topping, Dan Coe, John Chisholm, Danielle A. Berg | Summary: Investigating the metal enrichment in the early universe helps us constrain theories about the first stars and study the ages of galaxies. The lensed galaxy MACS0647$-$JD at $z=10.17$ is the brightest galaxy […]
Kavli Affiliate: Blake Sherwin | First 5 Authors: Helen Shao, Jahmour J. Givans, Jo Dunkley, Mathew Madhavacheril, Frank Qu | Summary: The sum of cosmic neutrino masses can be measured cosmologically, as the sub-eV particles behave as `hot’ dark matter whose main effect is to suppress the clustering of matter compared to a universe with […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Joris Witstok, Peter Jakobsen, Roberto Maiolino, Jakob M. Helton, Benjamin D. Johnson | Summary: $require{mediawiki-texvc}$Cosmic Reionisation commenced when ultraviolet (UV) radiation produced in the first galaxies began illuminating the cold, neutral gas that filled the primordial Universe. Recent James Webb Space Telescope (JWST) observations have shown that […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Giovanni Mazzolari, Jan Scholtz, Roberto Maiolino, Roberto Gilli, Alberto Traina | Summary: In this work, we spectroscopically select narrow-line AGN (NLAGN) among the $sim 300$ publicly available medium-resolution spectra of the CEERS Survey. Using both traditional and newly identified emission line NLAGN diagnostics diagrams, we identified 52 […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Dingyi Zhao, Yingjie Peng, Yipeng Jing, Xiaohu Yang, Luis C. Ho | Summary: In $Lambda$CDM cosmology, galaxies form and evolve in their host dark matter (DM) halos. Halo mass is crucial for understanding the halo-galaxy connection. The abundance matching (AM) technique has been widely used to derive […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Dingyi Zhao, Yingjie Peng, Yipeng Jing, Xiaohu Yang, Luis C. Ho | Summary: In $Lambda$CDM cosmology, galaxies form and evolve in their host dark matter (DM) halos. Halo mass is crucial for understanding the halo-galaxy connection. The abundance matching (AM) technique has been widely used to derive […]
Kavli Affiliate: George Efstathiou | First 5 Authors: George Efstathiou, , , , | Summary: Recent results from the Dark Energy Spectroscopic Instrument (DESI) collaboration have been interpreted as evidence for evolving dark energy. However, this interpretation is strongly dependent on which Type Ia supernova (SN) sample is combined with DESI measurements of baryon acoustic […]