Kavli Affiliate: Lina Necib | First 5 Authors: Tri Nguyen, Justin Read, Lina Necib, Siddharth Mishra-Sharma, Claude-André Faucher-Giguère | Summary: The Dark Matter (DM) distribution in dwarf galaxies provides crucial insights into both structure formation and the particle nature of DM. GraphNPE (Graph Neural Posterior Estimator), first introduced in Nguyen et al. (2023), is a […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Oliver Zier, Rahul Kannan, Aaron Smith, Ewald Puchwein, Mark Vogelsberger | Summary: Population III (Pop III) stars are the first stars in the Universe, forming from pristine, metal-free gas and marking the end of the cosmic dark ages. Their formation rate is expected to sharply decline after […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Alex M. Garcia, Alex M. Garcia, , , | Summary: The metallicity of galaxies, and its variation with galactocentric radius, provides key insights into the formation histories of galaxies and the physical processes driving their evolution. In this work, we analyze the radial metallicity gradients of star […]
Kavli Affiliate: Lina Necib | First 5 Authors: , , , , | Summary: The Dark Matter (DM) distribution in dwarf galaxies provides crucial insights into both structure formation and the particle nature of DM. GraphNPE (Graph Neural Posterior Estimator), first introduced in Nguyen et al. (2023), is a novel simulation-based inference framework that combines […]
Kavli Affiliate: Max Tegmark | First 5 Authors: David D. Baek, Max Tegmark, , , | Summary: In this paper, we investigate how model distillation impacts the development of reasoning features in large language models (LLMs). To explore this, we train a crosscoder on Qwen-series models and their fine-tuned variants. Our results suggest that the […]
Kavli Affiliate: Max Tegmark | First 5 Authors: David D. Baek, Max Tegmark, , , | Summary: In this paper, we investigate how model distillation impacts the development of reasoning features in large language models (LLMs). To explore this, we train a crosscoder on Qwen-series models and their fine-tuned variants. Our results suggest that the […]
Kavli Affiliate: Kejia Lee | First 5 Authors: Longfei Hao, Zhixuan Li, Faxin Shen, Yonghua Xu, Yuxiang Huang | Summary: In this paper, we present the linear decomposition method (LDM), which we developed to detect and analyze pulsar profile variations and mode changing behaviour. We developed LDM utilizing the likelihood function approach assuming the Gaussian […]
Kavli Affiliate: Huawei Zhang | First 5 Authors: Shunxuan He, Yang Huang, XinYi Li, Huawei Zhang, Gaochao Liu | Summary: Utilizing Zwicky Transient Facility (ZTF) data and existing RR Lyrae stars (RRLs) catalogs, this study achieves the first calibration of the $P – phi_{31} – R_{21} – text{[Fe/H]}$ and $P-phi_{31}-A_{2}-A_{1}-text{[Fe/H]}$ relations in the ZTF photometric […]
Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Oliver Zier, Oliver Zier, , , | Summary: We investigate the impact of ionizing external ultraviolet (UV) radiation on low-mass haloes ($M_h<10^10M_odot$) at high redshift using $1140M_odot$ baryonic resolution zoom-in simulations of seven regions from the THESAN-ZOOM project. We compare three simulation sets that differ in the […]
Kavli Affiliate: Zhuo Li | First 5 Authors: Zhuo Li, Yuhao Du, Xiaoqi Jiao, Yiwen Guo, Yuege Feng | Summary: Selecting high-quality and diverse training samples from extensive datasets plays a crucial role in reducing training overhead and enhancing the performance of Large Language Models (LLMs). However, existing studies fall short in assessing the overall […]