An iterative CMB lensing estimator minimizing instrumental noise bias

Kavli Affiliate: Anthony Challinor | 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 spectrum from the observed CMB maps. We introduce a new CMB […]


Continue.. An iterative CMB lensing estimator minimizing instrumental noise bias

Overmassive black holes in the early Universe can be explained by gas-rich, dark matter-dominated galaxies

Kavli Affiliate: Roberto Maiolino | Summary:JWST has revealed the apparent evolution of the black hole (BH)-stellar mass ($M_mathrmBH$-$M_rmast$) relation in the early Universe, while remaining consistent with the BH-dynamical mass ($M_mathrmBH$-$M_mathrmdyn$) relation. We predict BH masses for $z>3$ galaxies in the high-resolution THESAN-ZOOM simulations by assuming the $M_mathrmBH$-$M_mathrmdyn$ relation is fundamental. Even without live BH […]


Continue.. Overmassive black holes in the early Universe can be explained by gas-rich, dark matter-dominated galaxies

Characterising the Standardisation Properties of Type Ia Supernovae in the z band with Hierarchical Bayesian Modelling

Kavli Affiliate: Kaisey Mandel | Summary:Type Ia supernovae (SNe Ia) are standardisable candles: their peak magnitudes can be corrected for correlations between light curve properties and their luminosities to precisely estimate distances. Understanding SN Ia standardisation across wavelength improves methods for correcting SN Ia magnitudes. Using 150 SNe Ia from the Foundation Supernova Survey and […]


Continue.. Characterising the Standardisation Properties of Type Ia Supernovae in the z band with Hierarchical Bayesian Modelling

The Pandora project. II: how non-thermal physics drives bursty star formation and temperate mass-loaded outflows in dwarf galaxies

Kavli Affiliate: Martin Haehnelt | Summary:Dwarf galaxies provide powerful laboratories for studying galaxy formation physics. Their early assembly, shallow gravitational potentials, and bursty, clustered star formation histories make them especially sensitive to the processes that regulate baryons through multi-phase outflows. Using high-resolution, cosmological zoom-in simulations of a dwarf galaxy from textitthe Pandora suite, we explore […]


Continue.. The Pandora project. II: how non-thermal physics drives bursty star formation and temperate mass-loaded outflows in dwarf galaxies

A black hole in a near-pristine galaxy 700 million years after the Big Bang

Kavli Affiliate: Debora Sijacki | First 5 Authors: Roberto Maiolino, Hannah Uebler, Francesco D’Eugenio, Jan Scholtz, Ignas Juodzbalis | Summary: The recent discovery of a large number of massive black holes within the first two billion years after the Big Bang, as well as their peculiar properties, have been largely unexpected based on the extrapolation […]


Continue.. A black hole in a near-pristine galaxy 700 million years after the Big Bang

A black hole in a near-pristine galaxy 700 million years after the Big Bang

Kavli Affiliate: Roberto Maiolino| First 5 Authors: Roberto Maiolino, Roberto Maiolino, , , | Summary:The recent discovery of a large number of massive black holes within the first two billion years after the Big Bang, as well as their peculiar properties, have been largely unexpected based on the extrapolation of the properties of luminous quasars. […]


Continue.. A black hole in a near-pristine galaxy 700 million years after the Big Bang

A black hole in a near-pristine galaxy 700 million years after the Big Bang

Kavli Affiliate: Roberto Maiolino | Summary:The recent discovery of a large number of massive black holes within the first two billion years after the Big Bang, as well as their peculiar properties, have been largely unexpected based on the extrapolation of the properties of luminous quasars. These findings have prompted the development of several theoretical […]


Continue.. A black hole in a near-pristine galaxy 700 million years after the Big Bang

A black hole in a near-pristine galaxy 700 million years after the Big Bang

Kavli Affiliate: Roberto Maiolino | Summary:The recent discovery of a large number of massive black holes within the first two billion years after the Big Bang, as well as their peculiar properties, have been largely unexpected based on the extrapolation of the properties of luminous quasars. These findings have prompted the development of several theoretical […]


Continue.. A black hole in a near-pristine galaxy 700 million years after the Big Bang

The Lyman-$α$ emitter bispectrum as a probe of reionization morphology

Kavli Affiliate: Martin Haehnelt | Summary:Ly$α$ emitters (LAEs) have now been discovered out to redshift $z=13$, and are valuable probes of the reionization history at redshifts beyond the reach of other currently available tracers. Most inferences of the neutral hydrogen fraction from LAE observations rely on one-point and two-point statistics like the luminosity function and […]


Continue.. The Lyman-$α$ emitter bispectrum as a probe of reionization morphology

When relics were made: vigorous stellar rotation and low dark matter content in the massive ultra-compact galaxy GS-9209 at z=4.66

Kavli Affiliate: Roberto Maiolino | Summary:JWST uncovered a large number of massive quiescent galaxies (MQGs) at $z>3$, which theoretical models struggle to reproduce. Explaining the number density of such objects requires extremely high conversion efficiency of baryons into stars in early dark matter halos. Using stellar kinematics, we can investigate the processes shaping the mass […]


Continue.. When relics were made: vigorous stellar rotation and low dark matter content in the massive ultra-compact galaxy GS-9209 at z=4.66