6 citations · 13 across the 5 of their papers we have counts for
5 papers
Little Red Dots and Supermassive Black Hole Seed Formation in Ultralight Dark Matter Halos
Dongsu Bak, Jae-Weon Lee
We explore a possible mechanism for the formation of supermassive black hole (SMBH) seeds at the centers of ultralight dark matter (ULDM) halos in the early Universe. We investigat…
Machine Learns Quantum Complexity
Dongsu Bak, Su-Hyeong Kim, Sangnam Park +1
We study how a machine based on deep learning algorithms learns Krylov spread complexity in quantum systems with N x N random Hamiltonians drawn from the Gaussian unitary ensemble.…
Weak-lensing Mass Reconstruction of Galaxy Clusters with a Convolutional Neural Network -- II: Application to Next-Generation Wide-Field Surveys
Sangjun Cha, M. James Jee, Sungwook E. Hong +3
Traditional weak-lensing mass reconstruction techniques suffer from various artifacts, including noise amplification and the mass-sheet degeneracy. In Hong et al. (2021), we demons…
Final parsec problem of black hole mergers and ultralight dark matter
Hyeonmo Koo, Dongsu Bak, Inkyu Park +2
When two galaxies merge, they often produce a supermassive black hole binary (SMBHB) at their center. Numerical simulations with stars and cold dark matter show that SMBHBs typical…
Analyzing Planar Galactic Halo Distributions with Fuzzy/Cold Dark Matter Models
Sangnam Park, Dongsu Bak, Jae-Weon Lee +1
We perform a numerical comparison between the fuzzy dark matter model and the cold dark matter model, focusing on formation of satellite galaxy planes around massive galaxies. Such…