Astrophysics – Kavli Institute Pre-Print Publications

Tracing 3-D Magnetic Field Structure Using Dust Polarization and the Zeeman Effect

Posted by dbos November 15, 2024November 18, 2024Stanford, This Week: Astrophysics

Kavli Affiliate: Susan E. Clark | First 5 Authors: Brandon Shane, Blakesley Burkhart, Laura Fissel, Susan E. Clark, Philip Mocz | Summary: The characterization of magnetic fields within molecular clouds is fundamental to understanding star formation processes. Accurately gauging the three-dimensional structure of these fields presents a challenge, as observational techniques such as dust polarization […]

Continue..

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

Posted by dbos This Week: Astrophysics, Tokyo

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 […]

Continue..

Quantum similarity learning for anomaly detection

Posted by dbos November 15, 2024November 18, 2024This Week: Astrophysics, Tokyo

Kavli Affiliate: Masahito Yamazaki | First 5 Authors: A. Hammad, Mihoko M. Nojiri, Masahito Yamazaki, , | Summary: Anomaly detection is a vital technique for exploring signatures of new physics Beyond the Standard Model (BSM) at the Large Hadron Collider (LHC). The vast number of collisions generated by the LHC demands sophisticated deep learning techniques. […]

Continue..

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

Posted by dbos November 15, 2024November 18, 2024Peking, This Week: Astrophysics

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 so far by combining the […]

Continue..

Entanglement asymmetry and symmetry defects in boundary conformal field theory

Posted by dbos November 14, 2024November 18, 2024This Week: Astrophysics, Tokyo

Kavli Affiliate: Hirosi Ooguri | First 5 Authors: Yuya Kusuki, Sara Murciano, Hirosi Ooguri, Sridip Pal, | Summary: A state in a quantum system with a given global symmetry, $G$, can be sensitive to the presence of boundaries, which may either preserve or break this symmetry. In this work, we investigate how conformal invariant boundary […]

Continue..

Tidally distorted stars are triaxial pulsators

Posted by dbos November 14, 2024November 18, 2024MIT, This Week: Astrophysics

Kavli Affiliate: Saul Rappaport | First 5 Authors: Jim Fuller, Saul Rappaport, Rahul Jayaraman, Don Kurtz, Gerald Handler | Summary: Stars in close binaries are tidally distorted, and this has a strong effect on their pulsation modes. We compute the mode frequencies and geometries of tidally distorted stars using perturbation theory, accounting for the effects […]

Continue..

Cancelling mod-2 anomalies by Green-Schwarz mechanism with $B_{μν}$

Posted by dbos This Week: Astrophysics, Tokyo

Kavli Affiliate: Yuji Tachikawa | First 5 Authors: Shota Saito, Yuji Tachikawa, , , | Summary: We study if and when mod-2 anomalies can be canceled by the Green-Schwarz mechanism with the introduction of an antisymmetric tensor field $B_{munu}$. As explicit examples, we examine $SU(2)$ and more general $Sp(n)$ gauge theories in four and eight […]

Continue..

$S^5$: New insights from deep spectroscopic observations of the tidal tails of the globular clusters NGC 1261 and NGC 1904

Posted by dbos November 13, 2024November 18, 2024Chicago, This Week: Astrophysics

Kavli Affiliate: Alexander P. Ji | First 5 Authors: Petra Awad, Ting S. Li, Denis Erkal, Reynier F. Peletier, Kerstin Bunte | Summary: As globular clusters (GCs) orbit the Milky Way, their stars are tidally stripped forming tidal tails that follow the orbit of the clusters around the Galaxy. The morphology of these tails is […]

Continue..

The THESAN project: tracking the expansion and merger histories of ionized bubbles during the Epoch of Reionization

Posted by dbos November 13, 2024November 18, 2024MIT, This Week: Astrophysics

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Nathan Jamieson, Aaron Smith, Meredith Neyer, Rahul Kannan, Enrico Garaldi | Summary: The growth of ionized hydrogen bubbles in the intergalactic medium around early luminous objects is a fundamental process during the Epoch of Reionization (EoR). In this study, we analyze bubble sizes and their evolution using […]

Continue..

Intelligent Adaptive Metasurface in Complex Wireless Environments

Posted by dbos November 13, 2024November 18, 2024Peking, This Week: Astrophysics

Kavli Affiliate: Ran Wang | First 5 Authors: Han Qing Yang, Jun Yan Dai, Hui Dong Li, Lijie Wu, Meng Zhen Zhang | Summary: The programmable metasurface is regarded as one of the most promising transformative technologies for next-generation wireless system applications. Due to the lack of effective perception ability of the external electromagnetic environment, […]

Continue..