Kavli Affiliate: Roberto Maiolino | First 5 Authors: Matilde Brazzini, Matilde Brazzini, , , | Summary: The majority of Little Red Dots (LRDs) hosting Active Galactic Nuclei (AGN) exhibits broad H$alpha$ emission, which recent studies propose originates from scattering off free electrons within an ionized and dense medium embedding the Broad Line Region (BLR), rather […]
Kavli Affiliate: Anthony Challinor | First 5 Authors: Carmen Embil Villagra, Carmen Embil Villagra, , , | Summary: We measure the amplitude of matter fluctuations over a wide range of redshifts by combining CMB lensing observations from ACT DR6 and $textitPlanck$ PR4 with the overdensity of quasars from Quaia, a $textitGaia$ and $textitunWISE$ quasar catalog. […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: William McClymont, William McClymont, , , | Summary: We present an analysis of metallicities and chemical abundances at $3<z<12$ in the THESAN-ZOOM simulations. We find that smoothly curved gas-phase and stellar mass-metallicity relations (MZR) are already in place at $zapprox12$ and evolve slowly ($sim$0.2 dex increase for […]
Kavli Affiliate: Blake Sherwin | First 5 Authors: Boris Bolliet, Boris Bolliet, , , | Summary: These notes are very much work-in-progress and simply intended to showcase, in various degrees of details (and rigour), some of the cosmology calculations that class_sz can do. We describe the class_sz code in C, Python and Jax. Based on […]
Kavli Affiliate: Blake Sherwin | First 5 Authors: Licong Xu, Licong Xu, , , | Summary: We present a multi-agent system for automation of scientific research tasks, cmbagent (https://github.com/CMBAgents/cmbagent). The system is formed by about 30 Large Language Model (LLM) agents and implements a Planning & Control strategy to orchestrate the agentic workflow, with no […]
Kavli Affiliate: Debora Sijacki | First 5 Authors: Callum Witten, Callum Witten, , , | Summary: Protoclusters represent the most extreme environments in the very early Universe. They form from large-scale dark matter overdensities, harbouring an overabundance of galaxies fed by large gas reservoirs. Their early and accelerated evolution results in a distinct difference in […]
Kavli Affiliate: Anthony Challinor | First 5 Authors: Louis Legrand, Louis Legrand, , , | Summary: Noise maps from CMB experiments are generally statistically anisotropic, due to scanning strategies, atmospheric conditions, or instrumental effects. Any mis-modeling of this complex noise can bias the reconstruction of the lensing potential and the measurement of the lensing power […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Francesco D’Eugenio, Ignas Juodžbalis, Xihan Ji, Jan Scholtz, Roberto Maiolino | Summary: We present a broad-line active galactic nucleus (AGN) at z = 5.077, observed with both NIRSpec/MSA and NIRSpec/IFU by the JADES and BlackTHUNDER surveys. The target exhibits all the hallmark features of a ‘Little Red […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: William McClymont, Sandro Tacchella, Xihan Ji, Rahul Kannan, Roberto Maiolino | Summary: JWST has revealed the apparent evolution of the black hole (BH)-stellar mass ($M_mathrm{BH}$-$M_rm{ast}$) relation in the early Universe, while remaining consistent the BH-dynamical mass ($M_mathrm{BH}$-$M_mathrm{dyn}$) relation. We predict BH masses for $z>3$ galaxies in the […]
Kavli Affiliate: Roberto Maiolino | First 5 Authors: Federica Loiacono, Roberto Gilli, Marco Mignoli, Giovanni Mazzolari, Roberto Decarli | Summary: We report the discovery of a little red dot (LRD), dubbed BiRD (‘big red dot’), at $z=2.33$ in the field around the $z=6.3$ quasar SDSSJ1030+0524. Using NIRCam images, we identified it as a bright outlier […]