Kavli Affiliate: Alexander P. Ji | First 5 Authors: Kaia R. Atzberger, Sam A. Usman, Alexander P. Ji, Lara R. Cullinane, Denis Erkal | Summary: Chemical abundances of stellar streams can be used to determine the nature of a stream’s progenitor. Here we study the progenitor of the recently discovered Leiptr stellar stream, which was […]
Kavli Affiliate: Nickolay Y. Gnedin | First 5 Authors: Hanjue Zhu, Ellen G. Zweibel, Nickolay Y. Gnedin, , | Summary: We investigate the 1D plane-parallel front connecting the warm ($10^4$ K) and hot ($10^6$ K) phases of the circumgalactic medium (CGM), focusing on the influence of cosmic rays (CRs) in shaping these transition layers. We […]
Kavli Affiliate: Clarence L. Chang | First 5 Authors: Robin Anthony-Petersen, Clarence L. Chang, Yen-Yung Chang, Luke Chaplinsky, Caleb W. Fink | Summary: We describe observations of low energy excess (LEE) events (background events observed in all light dark matter direct detection calorimeters) and noise in a two-channel silicon athermal phonon detector with 375 meV […]
Kavli Affiliate: Brian D. Nord | First 5 Authors: Paxson Swierc, Marcos Tamargo-Arizmendi, Aleksandra Ćiprijanović, Brian D. Nord, | Summary: Modeling strong gravitational lenses is prohibitively expensive for modern and next-generation cosmic survey data. Neural posterior estimation (NPE), a simulation-based inference (SBI) approach, has been studied as an avenue for efficient analysis of strong lensing […]
Kavli Affiliate: Alexander P. Ji | First 5 Authors: Harley Katz, Alexander P. Ji, O. Grace Telford, Peter Senchyna, | Summary: The first few cycles of JWST have identified an overabundance of UV-bright galaxies and a general excess of UV luminosity density at $zgtrsim10$ compared to expectations from most (pre-JWST) theoretical models. Moreover, some of […]
Kavli Affiliate: Alexander P. Ji | First 5 Authors: Harley Katz, Alexander P. Ji, O. Grace Telford, Peter Senchyna, | Summary: The first few cycles of JWST have identified an overabundance of UV-bright galaxies and a general excess of UV luminosity density at $zgtrsim10$ compared to expectations from most (pre-JWST) theoretical models. Moreover, some of […]
Kavli Affiliate: Alexander P. Ji | First 5 Authors: Harley Katz, Alexander P. Ji, O. Grace Telford, Peter Senchyna, | Summary: The first few cycles of JWST have identified an overabundance of UV-bright galaxies and a general excess of UV luminosity density at $zgtrsim10$ compared to expectations from most (pre-JWST) theoretical models. Moreover, some of […]
Kavli Affiliate: Marcela Carena | First 5 Authors: Ernesto Arganda, Marcela Carena, Martín de los Rios, Andres D. Perez, Duncan Rocha | Summary: The search for weakly interacting matter particles (WIMPs) is one of the main objectives of the High Luminosity Large Hadron Collider (HL-LHC). In this work we use Machine Learning (ML) techniques to […]
Kavli Affiliate: Marcela Carena | First 5 Authors: Ernesto Arganda, Marcela Carena, Martín de los Rios, Andres D. Perez, Duncan Rocha | Summary: The search for weakly interacting matter particles (WIMPs) is one of the main objectives of the High Luminosity Large Hadron Collider (HL-LHC). In this work we use Machine-Learning (ML) techniques to explore […]
Kavli Affiliate: Gordan Krnjaic | First 5 Authors: Aurora Ireland, Gordan Krnjaic, Takuya Okawa, , | Summary: The Standard Model of particle physics does not explain the origin of the universe’s baryon asymmetry or its primordial fluctuations. The Affleck-Dine mechanism is a well-motivated scenario for generating the baryon asymmetry through the post-inflationary dynamics of a […]