Inhomogeneous Galactic Chemical Evolution: Modelling Ultra-Faint Dwarf Galaxies of the Large Magellanic Cloud

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Kavli Affiliate: Alexander P. Ji | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Ultra-faint dwarf galaxies are among the oldest and most metal-poor galaxies in the cosmos, observed to contain no traces of gas at the present time and a high dark matter mass fraction. Understanding the chemical abundance dispersion in such […]


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Comparison of Polarized Radiative Transfer Codes used by the EHT Collaboration

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Kavli Affiliate: Bradford A. Benson | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Interpretation of resolved polarized images of black holes by the Event Horizon Telescope (EHT) requires predictions of the polarized emission observable by an Earth-based instrument for a particular model of the black hole accretion system. Such predictions are generated […]


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Absorption of Vector Dark Matter Beyond Kinetic Mixing

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Kavli Affiliate: Gordan Krnjaic | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Massive vector particles are minimal dark matter candidates that motivate a wide range of laboratory searches, primarily exploiting a postulated kinetic mixing with the photon. However, depending on the high energy field content, the dominant vector dark matter (VDM) coupling […]


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Augment and Criticize: Exploring Informative Samples for Semi-Supervised Monocular 3D Object Detection

Posted by klaurent Peking, This Week: Astrophysics

Kavli Affiliate: Ke Wang | Authors: Zhenyu Li, Zhipeng Zhang, Heng Fan, Yuan He, Ke Wang, Xianming Liu, Junjun Jiang | Summary: In this paper, we improve the challenging monocular 3D object detection problem with a general semi-supervised framework. Specifically, having observed that the bottleneck of this task lies in lacking reliable and informative samples […]


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Janus monolayer ScXY (X$neq$Y=Cl, Br and I) for piezoelectric and valleytronic application: a first-principle prediction

Posted by klaurent Peking, This Week: Astrophysics

Kavli Affiliate: Ke Wang | Authors: San-Dong Guo, Xiao-Shu Guo, Shuo-Ning Si, Kai Cheng, Ke Wang, Yee Sin Ang | Summary: Coexistence of ferromagnetism, piezoelectricity and valley in two-dimensional (2D) materials is crucial to advance multifunctional electronic technologies. Here, Janus ScXY (X$neq$Y=Cl, Br and I) monolayers are predicted to be in-plane piezoelectric ferromagnetic (FM) semiconductors […]


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High-density reflection spectroscopy of black hole X-ray binaries in the hard state

Posted by klaurent MIT, This Week: Astrophysics

Kavli Affiliate: Erin Kara | Authors: Honghui Liu, Jiachen Jiang, Zuobin Zhang, Cosimo Bambi, Andrew C. Fabian, Javier A. Garcia, Adam Ingram, Erin Kara, James F. Steiner, John A. Tomsick, Dominic J. Walton, Andrew J. Young | Summary: We present a high-density relativistic reflection analysis of 21 spectra of six black hole X-ray binaries in […]


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SPT-CL J2215-3537: A Massive Starburst at the Center of the Most Distant Relaxed Galaxy Cluster

Posted by klaurent MIT, This Week: Astrophysics

Kavli Affiliate: Michael McDonald | Authors: Michael S. Calzadilla, Lindsey E. Bleem, Michael McDonald, Michael D. Gladders, Adam B. Mantz, Steven W. Allen, Matthew B. Bayliss, Anna-Christina Eilers, Benjamin Floyd, Julie Hlavacek-Larrondo, Gourav Khullar, Keunho J. Kim, Guillaume Mahler, Keren Sharon, Taweewat Somboonpanyakul, Brian Stalder, Antony A. Stark | Summary: We present the discovery of […]


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Anatomy of plasmons in generic Luttinger semimetals

Posted by klaurent Peking, This Week: Astrophysics

Kavli Affiliate: Jing Wang | Authors: Jing Wang, Ipsita Mandal | Summary: We investigate the parameter regimes favourable for the emergence of plasmons in isotropic, anisotropic, and band-mass asymmetric Luttinger semimetals (LSMs). An LSM harbours a quadratic band-crossing point (QBCP) in its bandstructure, where the upper and lower branches of dispersion are doubly degenrate. While […]


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Contrastive Self-supervised Learning in Recommender Systems: A Survey

Posted by klaurent Peking, This Week: Astrophysics

Kavli Affiliate: Ke Wang | Authors: Mengyuan Jing, Yanmin Zhu, Tianzi Zang, Ke Wang | Summary: Deep learning-based recommender systems have achieved remarkable success in recent years. However, these methods usually heavily rely on labeled data (i.e., user-item interactions), suffering from problems such as data sparsity and cold-start. Self-supervised learning, an emerging paradigm that extracts […]


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