Kavli Affiliate: Roberto Maiolino | First 5 Authors: Madeline A. Marshall, Minghao Yue, Anna-Christina Eilers, Jan Scholtz, Michele Perna | Summary: The James Webb Space Telescope is revolutionising our ability to understand the host galaxies and local environments of high-z quasars. Here we obtain a comprehensive understanding of the host galaxy of the z=7.08 quasar […]
Kavli Affiliate: Blake Sherwin | First 5 Authors: Frank J. Qu, Qianjun Hang, Gerrit Farren, Boris Bolliet, Jessica Nicole Aguilar | Summary: We measure the growth of cosmic density fluctuations on large scales and across the redshift range $0.3<z<0.8$ through the cross-correlation of the ACT DR6 CMB lensing map and galaxies from the DESI Legacy […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Crispin Turner, Sandro Tacchella, Francesco D’Eugenio, Stefano Carniani, Mirko Curti | Summary: We present a detailed analysis of JWST/NIRSpec and NIRCam observations of ZF-UDS-7329, a massive, quiescent galaxy at redshift $z=3.2$, which has been put forward to challenge cosmology and galaxy formation physics. Our study extends previous […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Sudipta Sikder, Anastasia Fialkov, Rennan Barkana, , | Summary: Several ongoing and upcoming radio telescopes aim to detect either the global 21-cm signal or the 21-cm power spectrum. The extragalactic radio background, as detected by ARCADE-2 and LWA-1, suggests a strong radio background from cosmic dawn, which […]
Kavli Affiliate: Debora Sijacki | First 5 Authors: Tibor Dome, Sergio Martin-Alvarez, Sandro Tacchella, Yuxuan Yuan, Debora Sijacki | Summary: We study star formation variability, or burstiness, as a method to constrain and compare different galaxy formation models at high redshift using the Azahar simulation suite. The models range from magneto-hydrodynamics with a magneto-thermo-turbulent prescription […]
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 […]