Kavli Affiliate: Risa Wechsler | Summary:We present the most precise and lowest-mass weak lensing measurements of dwarf galaxies to date, enabled by spectroscopic lenses from the Dark Energy Spectroscopic Instrument (DESI) and photometric lenses from the Dark Energy Survey (DES) calibrated with DESI redshifts. Using DESI spectroscopy from the first data release, we construct clean […]
Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Helena Treiber, Helena Treiber, , , | Summary: We present the most precise and lowest-mass weak lensing measurements of dwarf galaxies to date, enabled by spectroscopic lenses from the Dark Energy Spectroscopic Instrument (DESI) and photometric lenses from the Dark Energy Survey (DES) calibrated with DESI […]
Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Helena Treiber, Helena Treiber, , , | Summary: We present the most precise and lowest-mass weak lensing measurements of dwarf galaxies to date, enabled by spectroscopic lenses from the Dark Energy Spectroscopic Instrument (DESI) and photometric lenses from the Dark Energy Survey (DES) calibrated with DESI […]
Kavli Affiliate: Hsiaowen Chen| First 5 Authors: [#item_custom_name[1, [#item_custom_name[2, [#item_custom_name[3, [#item_custom_name[4, [#item_custom_name[5| Summary:Autonomous Target Tracking (ATT) systems, especially ATT drones, are widely used in applications such as surveillance, border control, and law enforcement, while also being misused in stalking and destructive actions. Thus, the security of ATT is highly critical for real-world applications. Under the […]
Kavli Affiliate: Paul Schechter| First 5 Authors: Henrique Schechter Vera, Henrique Schechter Vera, , , | Summary:We introduce EmbeddingGemma, a new lightweight, open text embedding model based on the Gemma 3 language model family. Our innovative training recipe strategically captures knowledge from larger models via encoder-decoder initialization and geometric embedding distillation. We improve model robustness […]
Kavli Affiliate: Zhuo Li | First 5 Authors: Huizhen Shu, Huizhen Shu, , , | Summary: Achieving robust safety alignment in large language models (LLMs) while preserving their utility remains a fundamental challenge. Existing approaches often struggle to balance comprehensive safety with fine-grained controllability at the representation level. We introduce LATENTGUARD, a novel three-stage framework […]
Kavli Affiliate: Gregory Herczeg | Summary:We re-evaluate the star formation history of the nearby Sco-Cen OB Association with a comprehensive analysis of Gaia XP spectra of more than 7,800 potential members. New spectral classifications are obtained by fitting individual XP spectra with templates derived from empirical spectra of young stars. Combining these spectral classifications in […]
Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Min Fang, Min Fang, , , | Summary: We re-evaluate the star formation history of the nearby Sco-Cen OB Association with a comprehensive analysis of Gaia XP spectra of more than 7,800 potential members. New spectral classifications are obtained by fitting individual XP spectra with templates […]
Kavli Affiliate: Peter Walter | Authors: Udit Dalwadi, Advait Subramanian, Aniliese Deal, Julia Conrad, Meera Venkatesh, Morgane Boone, Pascal Egea, Lingjie He, Nimit Jain, John D Lee, Yuwei Liu, Lucas Reineke, Kazuki Saito, Nathaniel Talledge, Hannah Toutkoushian, Maxence Le Vasseur, Francesca Zappa, Raoul de Groot, Diego Acosta-Alvear, Christopher Arthur, Jodi Nunnari, Mauro Costa-Mattioli, James Crawford, […]
Kavli Affiliate: Kiyoshi Masui | Summary:Baryonic feedback is a leading contaminant in studying dark matter and cosmology using cosmic shear. This has meant omitting much of the data during cosmological inference, or forward-modeling the spatial distribution of gas around dark matter halos using analytical or hydrodynamical models for baryonic feedback, which introduces nuisance parameters and […]