Astrophysics – Page 37 – Kavli Institute Pre-Print Publications

Millihertz Oscillations Near the Innermost Orbit of a Supermassive Black Hole

Posted by dbos January 3, 2025MIT

Kavli Affiliate: Ronald A. Remillard | First 5 Authors: Megan Masterson, Erin Kara, Christos Panagiotou, William N. Alston, Joheen Chakraborty | Summary: Recent discoveries from time-domain surveys are defying our expectations for how matter accretes onto supermassive black holes (SMBHs). The increased rate of short-timescale, repetitive events around SMBHs, including the newly-discovered quasi-periodic eruptions (QPEs), […]

Continue..

Millihertz Oscillations Near the Innermost Orbit of a Supermassive Black Hole

Posted by klaurent January 3, 2025MIT

Continue..

FEASTS: Radial Distribution of HI surface densities down to 0.01 M$_{odot}$ pc$^{-2}$ of 35 Nearby Galaxies

Posted by dbos January 2, 2025January 13, 2025Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Jing Wang, Dong Yang, Xuchen Lin, Qifeng Huang, Zhijie Qu | Summary: We present the HI surface density ($Sigma_{rm HI}$) radial distributions based on total-power HI images obtained by FAST in the FEASTS program, for 35 galaxies with inclinations lower than 72 degree. We derive the HI […]

Continue..

Testing the Froggatt-Nielsen Mechanism with Lepton Violation

Posted by dbos December 31, 2024January 13, 2025Chicago

Kavli Affiliate: Gordan Krnjaic | First 5 Authors: Claudia Cornella, David Curtin, Gordan Krnjaic, Micah Mellors, | Summary: The Froggatt-Nielsen (FN) mechanism offers an elegant explanation for the observed masses and mixings of Standard Model fermions. In this work, we systematically study FN models in the lepton sector, identifying a broad range of charge assignments […]

Continue..

VideoRefer Suite: Advancing Spatial-Temporal Object Understanding with Video LLM

Posted by dbos December 31, 2024January 13, 2025Peking

Kavli Affiliate: Li Xin Li | First 5 Authors: Yuqian Yuan, Hang Zhang, Wentong Li, Zesen Cheng, Boqiang Zhang | Summary: Video Large Language Models (Video LLMs) have recently exhibited remarkable capabilities in general video understanding. However, they mainly focus on holistic comprehension and struggle with capturing fine-grained spatial and temporal details. Besides, the lack […]

Continue..

VideoRefer Suite: Advancing Spatial-Temporal Object Understanding with Video LLM

Posted by dbos December 31, 2024Peking

Continue..

VideoRefer Suite: Advancing Spatial-Temporal Object Understanding with Video LLM

Posted by klaurent December 31, 2024Peking

Continue..

Online Video Understanding: A Comprehensive Benchmark and Memory-Augmented Method

Posted by dbos December 31, 2024January 13, 2025Peking

Kavli Affiliate: Jing Wang | First 5 Authors: Zhenpeng Huang, Xinhao Li, Jiaqi Li, Jing Wang, Xiangyu Zeng | Summary: Multimodal Large Language Models (MLLMs) have shown significant progress in offline video understanding. However, applying these models to real-world scenarios, such as autonomous driving and human-computer interaction, presents unique challenges due to the need for […]

Continue..

Primordial Black Hole Formation from Power Spectrum with Finite-width

Posted by dbos December 31, 2024January 13, 2025Tokyo

Kavli Affiliate: Misao Sasaki | First 5 Authors: Shi Pi, Misao Sasaki, Volodymyr Takhistov, Jianing Wang, | Summary: Primordial Black Holes (PBHs) can form from gravitational collapse of large overdensities in the early Universe, giving rise to rich phenomena in astrophysics and cosmology. We develop a novel, general, and accurate method based on theory of […]

Continue..

Primordial Black Hole Formation from Power Spectrum with Finite-width

Posted by dbos December 31, 2024Tokyo

Continue..