A Time-Dependent Spectral Analysis of $γ$ Cassiopeiae

Kavli Affiliate: David P. Huenemoerder | First 5 Authors: Sean J. Gunderson, David P. Huenemoerder, José M. Torrejón, Dustin K. Swarm, Joy S. Nichols | Summary: We investigated the temporal and spectral features of $gamma$ Cassiopeiae’s X-ray emission within the context of the white dwarf accretion hypothesis. We find that the variabilities present in the […]


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Measurement of $B to K{}^{*}(892)γ$ decays at Belle II

Kavli Affiliate: T. Higuchi | First 5 Authors: Belle II Collaboration, I. Adachi, L. Aggarwal, H. Ahmed, H. Aihara | Summary: We present measurements of $B to K{}^{*}(892)gamma$ decays using $365,{rm fb}^{-1}$ of data collected from 2019 to 2022 by the Belle~II experiment at the SuperKEKB asymmetric-energy $e^+e^-$ collider. The data sample contains $(387 pm […]


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The HI Mass Function of the Local Universe: Combining Measurements from HIPASS, ALFALFA and FASHI

Kavli Affiliate: Jing Wang | First 5 Authors: Wenlin Ma, Hong Guo, Haojie Xu, Michael G. Jones, Chuan-Peng Zhang | Summary: We present the first HI mass function (HIMF) measurement for the recent FAST All Sky HI (FASHI) survey and the most complete measurements of HIMF in the local universe thus far. We obtained these […]


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A Recent Supermassive Black Hole Binary in the Galactic Center Unveiled by the Hypervelocity Stars

Kavli Affiliate: Xian Chen | First 5 Authors: Chunyang Cao, Fukun Liu, Shuo Li, Xian Chen, Ke Wang | Summary: When a binary of early-type stars from the young stellar populations in the Galactic center (GC) region is scattered to the vicinity of the supermassive black hole (SMBH) Sgr~$rm{A}^{*}$, one of the components would be […]


Continue.. A Recent Supermassive Black Hole Binary in the Galactic Center Unveiled by the Hypervelocity Stars

A Recent Supermassive Black Hole Binary in the Galactic Center Unveiled by the Hypervelocity Stars

Kavli Affiliate: Ke Wang | First 5 Authors: Chunyang Cao, Fukun Liu, Shuo Li, Xian Chen, Ke Wang | Summary: When a binary of early-type stars from the young stellar populations in the Galactic center (GC) region is scattered to the vicinity of the supermassive black hole (SMBH) Sgr~$rm{A}^{*}$, one of the components would be […]


Continue.. A Recent Supermassive Black Hole Binary in the Galactic Center Unveiled by the Hypervelocity Stars

Separating the control of moving and holding still in post-stroke arm paresis

Kavli Affiliate: Reza Shadmehr | Authors: Alkis M. Hadjiosif, Kahori Kita, Scott T. Albert, Robert A. Scheidt, Reza Shadmehr and John W. Krakauer | Summary: Moving and holding still have been posited to be under separate control regimes for both eye and arm movements. The paretic arm after stroke is notable for abnormalities both at […]


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Sex chromosome gene expression associated with vocal learning following hormonal manipulation in female zebra finches

Kavli Affiliate: Erich Jarvis | Authors: Matthew Davenport, Ha Na Choe, Hiroaki Matsunami and Erich D Jarvis | Summary: Zebra finches are sexually dimorphic vocal learners. Males learn to sing by imitating mature conspecifics, but females do not. Absence of song in females is associated with atrophy and apparent repression of several vocal learning brain […]


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Revealing EMRI/IMRI candidates with quasiperiodic ultrafast outflows

Kavli Affiliate: Dheeraj R. Pasham | First 5 Authors: Michal Zajaček, Petra Suková, Vladimír Karas, Dheeraj R. Pasham, Francesco Tombesi | Summary: The first detection of the quasiperiodic ultrafast outflow in the ASASSN-20qc system was reported by Pasham et al. (2024). The outflow is revealed in the soft X-ray spectra as an absorption feature, which […]


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The Geometry of Concepts: Sparse Autoencoder Feature Structure

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) […]


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Constraints on Long-Ranged Interactions Between Dark Matter and the Standard Model

Kavli Affiliate: Peter Graham | First 5 Authors: Zachary Bogorad, Peter Graham, Harikrishnan Ramani, , | Summary: Dark matter’s existence is known thanks to its gravitational interaction with Standard Model particles, but it remains unknown whether this is the only force present between them. While many searches for such new interactions with dark matter focus […]


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