Astrophysics – Page 57 – Kavli Institute Pre-Print Publications

Investigating the interplay between the coronal properties and the hard X-ray variability of active galactic nuclei with NuSTAR

Posted by dbos July 9, 2024Peking

Kavli Affiliate: Claudio Ricci | First 5 Authors: Roberto Serafinelli, Alessandra De Rosa, Alessia Tortosa, Luigi Stella, Fausto Vagnetti | Summary: Active galactic nuclei (AGN) are extremely variable in the X-ray band down to very short timescales. However, the driver behind the X-ray variability is still poorly understood. Previous results suggest that the hot corona […]

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TVR-Ranking: A Dataset for Ranked Video Moment Retrieval with Imprecise Queries

Posted by dbos July 9, 2024July 22, 2024Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Renjie Liang, Li Li, Chongzhi Zhang, Jing Wang, Xizhou Zhu | Summary: In this paper, we propose the task of textit{Ranked Video Moment Retrieval} (RVMR) to locate a ranked list of matching moments from a collection of videos, through queries in natural language. Although a few related […]

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Rotational Properties of Inverted Hybrid Stars

Posted by dbos July 8, 2024July 22, 2024Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Rodrigo Negreiros, Chen Zhang, Renxin Xu, , | Summary: We study the rotational properties of inverted hybrid stars (also termed cross stars), which have been recently proposed as a possible new class of compact stars characterized by an outer layer of quark matter and a core of […]

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Rotational Properties of Inverted Hybrid Stars

Posted by dbos July 8, 2024Peking

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GD-1 Stellar Stream and Cocoon in the DESI Early Data Release

Posted by dbos July 8, 2024July 22, 2024Stanford

Kavli Affiliate: Risa H. Wechsler | First 5 Authors: Monica Valluri, Parker Fagrelius, Sergey. E. Koposov, Ting S. Li, Oleg Y. Gnedin | Summary: We present ~ 126 new spectroscopically identified members of the GD-1 tidal stream obtained with the 5000-fiber Dark Energy Spectroscopic Instrument (DESI). We confirm the existence of a “cocoon” which is […]

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A massive, neutral gas reservoir permeating a galaxy proto-cluster after the reionization era

Posted by dbos July 8, 2024July 22, 2024Cambridge

Kavli Affiliate: Debora Sijacki | First 5 Authors: Kasper E. Heintz, Jake S. Bennett, Pascal A. Oesch, Albert Sneppen, Douglas Rennehan | Summary: Galaxy clusters are the most massive, gravitationally-bound structures in the Universe, emerging through hierarchical structure formation of large-scale dark matter and baryon overdensities. Early galaxy “proto-clusters” are believed to be important physical […]

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Revisiting the Ultraviolet Tail of the Primordial Gravitational Wave

Posted by dbos July 8, 2024July 22, 2024Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Shi Pi, Misao Sasaki, Ao Wang, Jianing Wang, | Summary: High-frequency primordial gravitational waves (PGWs) with wave numbers larger than the Hubble parameter at the end of inflation are originated from the ultraviolet (UV) modes, which are never stretched out of the horizon. Such a UV tail […]

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Revisiting for maximal flavor violating $Z^{‘}_{eμ}$ and its phenomenology constraints

Posted by dbos Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Jia Liu, Muyuan Song, Haohao Zhang, , | Summary: Lepton flavor violation (LFV), observed conclusively in neutrino oscillations, remains a pivotal area of investigation due to its absence in the Standard Model (SM). Beyond the Standard Model (BSM) physics explores charged lepton flavor violation (CLFV), particularly through […]

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Revisiting for maximal flavor violating $Z^{‘}_{eμ}$ and its phenomenology constraints

Posted by dbos Tokyo

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Ada-adapter:Fast Few-shot Style Personlization of Diffusion Model with Pre-trained Image Encoder

Posted by dbos July 8, 2024July 15, 2024Tokyo

Kavli Affiliate: Jia Liu | First 5 Authors: Jia Liu, Changlin Li, Qirui Sun, Jiahui Ming, Chen Fang | Summary: Fine-tuning advanced diffusion models for high-quality image stylization usually requires large training datasets and substantial computational resources, hindering their practical applicability. We propose Ada-Adapter, a novel framework for few-shot style personalization of diffusion models. Ada-Adapter […]

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