11 papers
SKAVLBI view of AGN jets in the early Universe
C. Spingola, M. Mezcua, Y. Liu +33
Active Galactic Nuclei (AGN) are among the brightest sources in the Universe, and those that are also jetted are uniquely valuable at the earliest epochs, because their relativisti…
Little Red Dot progenitors from Compact Starbursts: A Natural Path to Early AGN Formation
MatÃas Liempi, Muhammad A. Latif, Dominik R. G. Schleicher
The recent discovery of Little Red Dots (LRDs) by the James Webb Space Telescope has challenged traditional models of early galaxy and black hole co-evolution. The nature of these…
How Overmassive Black Holes Formed at Cosmic Dawn
Muhammad A. Latif, Daniel J. Whalen, Sadegh Khochfar +1
Overmassive black hole galaxies (OBGs) at redshifts 10, or 450 Myr after the Big Bang, are one of the most puzzling discoveries by the James Webb Space Telescope to date b…
Massive star clusters detected by JWST as natural birth places to form intermediate-mass black holes
Dominik R. G. Schleicher, MatÃas Liempi, Mirek Giersz +11
The James Webb Space Telescope (JWST) has detected, through gravitational lensing, several young massive star clusters (YMCs), which are considered as relevant building blocks of h…
Impact of subhalo dynamical friction heating on the formation of the first structures in the universe
Zhenyu Wu, Sadegh Khochfar, Muhammad A. Latif +2
We present a model for gas heating, driven by dynamical friction from orbiting subhalos within dark matter halos. Using data from the TNG50 simulation, we derive the subhalo mass f…
1000-10,000 M Primordial Stars Created the Nitrogen Excess in GS 3073 at
Devesh Nandal, Daniel J. Whalen, Muhammad A. Latif +1
The advent of the James Webb Space Telescope has revealed a wealth of new galaxies just a few hundred Myr after the Big Bang. Some of these galaxies exhibit unusual N/O ratios that…