Kavli Affiliate: Kejia Lee | First 5 Authors: Rui Wang, Zhen Yan, Zhiqiang Shen, KeJia Lee, Yajun Wu | Summary: The Gum Nebula is a faint supernova remnant extending about 40 degrees across the southern sky, potentially affecting tens of background pulsars. Though the view that the Gum Nebula acts as a potential scattering screen […]
Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Ahmed, H. Aihara | Summary: We present a measurement of the branching fraction and time-dependent charge-parity ($CP$) decay-rate asymmetries in $B^0 to J/psi pi^0$ decays. The data sample was collected with the Belle~II detector at the SuperKEKB asymmetric $e^+e^-$ […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Moira Andrews, M. Celeste Artale, Ankit Kumar, Kyoung-Soo Lee, Tess Florek | Summary: We investigate the physical properties and redshift evolution of simulated galaxies residing in protoclusters at cosmic noon, to understand the influence of the environment on galaxy formation. This work is to build clear expectations […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Moira Andrews, M. Celeste Artale, Ankit Kumar, Kyoung-Soo Lee, Tess Florek | Summary: We investigate the physical properties and redshift evolution of simulated galaxies residing in protoclusters at cosmic noon, to understand the influence of the environment on galaxy formation. This work is to build clear expectations […]
Kavli Affiliate: Ronald A. Remillard | First 5 Authors: Keith C. Gendreau, Dominic Maes, Ronald A. Remillard, Paul S. Ray, Zaven Arzoumanian | Summary: The Low Energy Modular Array (LEMA) is one of three instruments that compose the STROBE-X mission concept. The LEMA is a large effective-area, high throughput, non-imaging pointed instrument based on the […]
Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Paul S. Ray, Peter W. A. Roming, Andrea Argan, Zaven Arzoumanian, David R. Ballantyne | Summary: We give an overview of the science objectives and mission design of the Spectroscopic Time-Resolving Observatory for Broadband Energy X-rays (STROBE-X) observatory, which has been proposed as a NASA probe-class (~$1.5B) […]
Kavli Affiliate: Deepto Chakrabarty | First 5 Authors: Paul S. Ray, Peter W. A. Roming, Andrea Argan, Zaven Arzoumanian, David R. Ballantyne | Summary: We give an overview of the science objectives and mission design of the Spectroscopic Time-Resolving Observatory for Broadband Energy X-rays (STROBE-X) observatory, which has been proposed as a NASA probe-class (~$1.5B) […]
Kavli Affiliate: Alexander P. Ji | First 5 Authors: Joshua D. Simon, Ting S. Li, Alexander P. Ji, Andrew B. Pace, Terese T. Hansen | Summary: We present spectroscopy of the ultra-faint Milky Way satellites Eridanus III (Eri III) and DELVE 1. We identify eight member stars in each satellite and place non-constraining upper limits […]
Kavli Affiliate: Max Tegmark | First 5 Authors: Anish Mudide, Joshua Engels, Eric J. Michaud, Max Tegmark, Christian Schroeder de Witt | Summary: Sparse autoencoders (SAEs) are a recent technique for decomposing neural network activations into human-interpretable features. However, in order for SAEs to identify all features represented in frontier models, it will be necessary […]
Kavli Affiliate: Max Tegmark | First 5 Authors: Yuxiao Li, Eric J. Michaud, David D. Baek, Joshua Engels, Xiaoqing Sun | Summary: Sparse autoencoders have recently produced dictionaries of high-dimensional vectors corresponding to the universe of concepts represented by large language models. We find that this concept universe has interesting structure at three levels: 1) […]