Kavli Affiliate: Roberto Maiolino | Summary:Recent observations revealed that distant galaxies have bursty star formation histories, regulated by stellar or active galactic nuclei (AGN) feedback and gas inflows. According to theoretical models, feedback preferentially removes metal-rich gas, while subsequent starbursts are triggered by mergers and newly-accreted gas that is generally less enriched than the galaxy […]

Kavli Affiliate: Roberto Maiolino | Summary:Recent observations revealed that distant galaxies have bursty star formation histories, regulated by stellar or active galactic nuclei (AGN) feedback and gas inflows. According to theoretical models, feedback preferentially removes metal-rich gas, while subsequent starbursts are triggered by mergers and newly-accreted gas that is generally less enriched than the galaxy […]

Kavli Affiliate: Roberto Maiolino | Summary:We test whether "Little Red Dots" (LRDs) are dust-reddened, high-inclination counterparts of compact, blue broad-line AGNs ("Little Blue Dots", LBDs) powered by super-Eddington accretion. We model the central engine as a geometrically thick, radiation-pressure supported accretion flow whose funnel yields strongly anisotropic, intrinsically blue ionizing continua, coupled to an equatorially […]

Kavli Affiliate: George Efstathiou | Summary:Measurements from the Absolute Radiometer for Cosmology, Astrophysics, and Diffuse Emission 2 (ARCADE-2) reveal a strong radio background in the GHz frequency range. Since the cosmological 21-cm signal is measured relative to the background radiation temperature, the presence of a radio excess can significantly alter its characteristics. Previous studies have […]

Kavli Affiliate: Martin Haehnelt | Summary:Here we analyse the growth and feedback effects of massive black holes (MBHs) in the SEEDZ simulations. The most massive black holes grow to masses of $sim10^6$ M$_odot$ by $z=12.5$ during short bursts of super-Eddington accretion, sustained over a period of 5-30 Myr. We find that the determining factor that […]

Kavli Affiliate: Martin Haehnelt | Summary:Here we analyse the growth and feedback effects of massive black holes (MBHs) in the SEEDZ simulations. The most massive black holes grow to masses of $sim10^6$ M$_odot$ by $z=12.5$ during short bursts of super-Eddington accretion, sustained over a period of 5-30 Myr. We find that the determining factor that […]

Kavli Affiliate: Kaisey Mandel | Summary:We fit the multi-band light curves of 2,205 Type Ia supernovae (SNe~Ia) from the Zwicky Transient Facility DR2 with a one-zone radioactive decay model with a phenomenological addition to include Fe recombination physics. We find a strong correlation between inferred nickel mass and SALT2 stretch, which within our simplified modelling […]

Kavli Affiliate: Martin Haehnelt | Summary:Tomographic reconstruction of reionization is a long-sought goal. It would move the field beyond global summary statistics, such as the volume-averaged ionised fraction, to direct, field-level constraints on the ionization topology. With this in mind, we present TORRCH (TOmographic Reconstruction of the Reionization of Cosmic Hydrogen), a deep-learning framework that […]

Kavli Affiliate: Roberto Maiolino | Summary:In the local Universe, supermassive black hole (SMBH) masses strongly correlate with their host-galaxies’ stellar masses ($M_*$), but galaxies hosting faint AGN recently found by JWST may deviate from this relation. To constrain the M$_textBH$-M$_*$ relation at high redshift, we performed AGN-host image decomposition for 17 low-luminosity AGN galaxies at […]

Kavli Affiliate: Roberto Maiolino | Summary:Using JWST NIRCam imaging and grism spectroscopy from the JWST Advanced Deep Extragalactic Survey (JADES) Origins Fields, we report spectroscopic redshift measurements of 1,445 emission-line galaxies at $z=0-9$. Within this sample, we identify two prominent galaxy protoclusters at $z = 3.47$ and 3.69, each anchored by massive dusty star-forming galaxies […]