Using the Ca II lines in T Tauri stars to infer the abundance of refractory elements in the innermost disk regions

Kavli Affiliate: Gregory J. Herczeg | First 5 Authors: Marbely Micolta, Nuria Calvet, Thanawuth Thanathibodee, Gladis Magris C., Carlo F. Manara | Summary: We present a study of the abundance of calcium in the innermost disk of 70 T Tauri stars in the star-forming regions of Chamaeleon I, Lupus and Orion OB1b. We use calcium […]


Continue.. Using the Ca II lines in T Tauri stars to infer the abundance of refractory elements in the innermost disk regions

Chemical Abundances in the Leiptr Stellar Stream: A Disrupted Ultra-faint Dwarf Galaxy?

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 […]


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Cosmic Ray Mediated Thermal Fronts in the Warm-Hot Circumgalactic Medium

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 […]


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LiNeS: Post-training Layer Scaling Prevents Forgetting and Enhances Model Merging

Kavli Affiliate: Ke Wang | First 5 Authors: Ke Wang, Nikolaos Dimitriadis, Alessandro Favero, Guillermo Ortiz-Jimenez, Francois Fleuret | Summary: Large pre-trained models exhibit impressive zero-shot performance across diverse tasks, but fine-tuning often leads to catastrophic forgetting, where improvements on a target domain degrade generalization on other tasks. To address this challenge, we introduce LiNeS, […]


Continue.. LiNeS: Post-training Layer Scaling Prevents Forgetting and Enhances Model Merging

A Repeating Fast Radio Burst Source in a Low-Luminosity Dwarf Galaxy

Kavli Affiliate: Kiyoshi W. Masui | First 5 Authors: Danté M. Hewitt, Mohit Bhardwaj, Alexa C. Gordon, Aida Kirichenko, Kenzie Nimmo | Summary: We present the localization and host galaxy of FRB 20190208A, a repeating source of fast radio bursts (FRBs) discovered using CHIME/FRB. As part of the PRECISE repeater localization program on the EVN, […]


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An Extreme Radio Fluctuation of Pulsar B1929$+$10

Kavli Affiliate: Renxin Xu | First 5 Authors: Zhengli Wang, Shunshun Cao, Jiguang Lu, Yulan Liu, Xun Shi | Summary: We report the detection of an extreme flux decrease accompanied by clear dispersion measure (DM) and rotation measure (RM) variations for pulsar B1929+10 during the 110-minute radio observation with the Five-hundred-meter Aperture Spherical radio Telescope […]


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Ion manipulation from liquid Xe to vacuum: Ba-tagging for a nEXO upgrade and future 0νb{eta}b{eta} experiments

Kavli Affiliate: Giorgio Gratta | First 5 Authors: Dwaipayan Ray, Robert Collister, Hussain Rasiwala, Lucas Backes, Ali V. Balbuena | Summary: Neutrinoless double beta decay ($0 nu beta beta$) provides a way to probe physics beyond the Standard Model of particle physics. The upcoming nEXO experiment will search for $0nubetabeta$ decay in $^{136}$Xe with a […]


Continue.. Ion manipulation from liquid Xe to vacuum: Ba-tagging for a nEXO upgrade and future 0νb{eta}b{eta} experiments

Low Energy Backgrounds and Excess Noise in a Two-Channel Low-Threshold Calorimeter

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 […]


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Universality in the Near-Side Energy-Energy Correlator

Kavli Affiliate: Feng Yuan | First 5 Authors: Xiaohui Liu, Werner Vogelsang, Feng Yuan, Hua Xing Zhu, | Summary: We investigate the energy-energy correlator (EEC) of hadrons produced on the same side in $e^+e^-$ annihilation or in leading jets in $pp$ collisions. We observe a remarkable universality of the correlator. Using a non-perturbative transverse momentum […]


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AEOS: Star-by-Star Cosmological Simulations of Early Chemical Enrichment and Galaxy Formation

Kavli Affiliate: Anna Frebel | First 5 Authors: Kaley Brauer, Andrew Emerick, Jennifer Mead, Alexander P. Ji, John H. Wise | Summary: The AEOS project introduces a series of high-resolution cosmological simulations that model star-by-star chemical enrichment and galaxy formation in the early Universe, achieving 1 pc resolution. These simulations capture the complexities of galaxy […]


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