Kavli Affiliate: George Efstathiou | First 5 Authors: Sudipta Sikder, Sudipta Sikder, , , | Summary: The 21-cm line of hydrogen is the most promising probe of the Dark Ages and Cosmic Dawn. We combine hydrodynamical simulations with a large-scale grid in order to calculate the effect of non-linear structure formation on the large-scale 21-cm […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Hyunbae Park, Hyunbae Park, , , | Summary: It is thought that the Universe went through an early period known as the Dark Ages, during which primeval density fluctuations grew to form the first luminous objects, marking the beginning of Cosmic Dawn around 100 million years after […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Paul H. Goubert, Paul H. Goubert, , , | Summary: We present an investigation into the quenching of simulated galaxies across cosmic time, honing in on the role played by both intrinsic and environmental mechanisms at different epochs. In anticipation of VLT-MOONRISE, the first wide-field spectroscopic galaxy […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Bartolomeo Trefoloni, Bartolomeo Trefoloni, , , | Summary: The James Webb Space Telescope (textitJWST) opened a new observational window on the primordial Universe. Here we present new JWST NIRSpec integral field spectroscopy (IFS) observations of the $z=7.54$ quasar ULAS J1342+0928 obtained as part of the Galaxy Assembly […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Mirko Curti, Mirko Curti, , , | Summary: We present the analysis of the stellar and interstellar medium (ISM) properties of MARTA-4327, a star-forming galaxy at z=2.224 observed by means of deep JWST/NIRSpec spectroscopy in both medium- and high-resolution gratings as part of the "Measuring Abundances at […]
Kavli Affiliate: Martin Haehnelt | First 5 Authors: Louise Welsh, Louise Welsh, , , | Summary: We aim to study the clustering of metal absorption lines and the structures that they arise in as a function of cosmic time. We focus on C IV and Si IV absorption features that are identified along a given […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Ignas Juodžbalis, Ignas Juodžbalis, , , | Summary: Recent discoveries of faint active galactic nuclei (AGN) at the redshift frontier have revealed a plethora of broad Halpha emitters with optically red continua, named Little Red Dots (LRDs), which comprise 15-30% of the high redshift broad line AGN […]
Kavli Affiliate: Debora Sijacki | First 5 Authors: Ignas Juodžbalis, Ignas Juodžbalis, , , | Summary: Recent discoveries of faint active galactic nuclei (AGN) at the redshift frontier have revealed a plethora of broad Halpha emitters with optically red continua, named Little Red Dots (LRDs), which comprise 15-30% of the high redshift broad line AGN […]
Kavli Affiliate: George Efstathiou | First 5 Authors: Jiten Dhandha, Jiten Dhandha, , , | Summary: The cosmic 21-cm signal is a promising probe of the early Universe, owing to its sensitivity to the thermal state of the neutral intergalactic medium (IGM) and properties of the first luminous sources. In this work, we constrain the […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Xihan Ji, Xihan Ji, , , | Summary: Recent JWST observations have revealed a puzzling population of optically red and compact galaxies with peculiar "V"-shaped spectra at high redshift, known as "Little Red Dots" (LRDs). Until now, most spectroscopically confirmed LRDs are found at z > 4 […]