January 25, 2024 – Kavli Institute Pre-Print Publications

Intensive Swift and LCO monitoring of PG 1302$-$102: AGN disk reverberation mapping of a supermassive black hole binary candidate

Posted by dbos January 25, 2024February 5, 2024MIT

Kavli Affiliate: Erin Kara | First 5 Authors: Tingting Liu, Rick Edelson, Juan V. Hernández Santisteban, Erin Kara, John Montano | Summary: We present an intensive multiwavelength monitoring campaign of the quasar PG 1302$-$102 with Swift and the Las Cumbres Observatory network telescopes. At $zsim0.3$, it tests the limits of the reverberation mapping (RM) technique […]

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Small-scale radio jets and tidal disruption events: A theory of high-luminosity compact symmetric objects

Posted by dbos January 25, 2024February 5, 2024Stanford

Kavli Affiliate: Roger D. Blandford | First 5 Authors: Andrew G. Sullivan, Roger D. Blandford, Mitchell C. Begelman, Mark Birkinshaw, Anthony C. S. Readhead | Summary: Double lobe radio sources associated with active galactic nuclei represent one of the longest studied groups in radio astronomy. A particular sub-group of double radio sources comprises the compact […]

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Black-Box Access is Insufficient for Rigorous AI Audits

Posted by dbos January 25, 2024MIT

Kavli Affiliate: Max Tegmark | First 5 Authors: Stephen Casper, Carson Ezell, Charlotte Siegmann, Noam Kolt, Taylor Lynn Curtis | Summary: External audits of AI systems are increasingly recognized as a key mechanism for AI governance. The effectiveness of an audit, however, depends on the degree of access granted to auditors. Recent audits of state-of-the-art […]

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Black-Box Access is Insufficient for Rigorous AI Audits

Posted by dbos January 25, 2024MIT

Kavli Affiliate: Max Tegmark | First 5 Authors: Stephen Casper, Carson Ezell, Charlotte Siegmann, Noam Kolt, Taylor Lynn Curtis | Summary: External audits of AI systems are increasingly recognized as a key mechanism for AI governance. The effectiveness of an audit, however, depends on the degree of system access granted to auditors. Recent audits of […]

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The BLAST Observatory: A Sensitivity Study for Far-IR Balloon-borne Polarimeters

Posted by dbos January 25, 2024Stanford

Kavli Affiliate: Susan E. Clark | First 5 Authors: The BLAST Observatory Collaboration, Gabriele Coppi, Simon Dicker, James E. Aguirre, Jason E. Austermann | Summary: Sensitive wide-field observations of polarized thermal emission from interstellar dust grains will allow astronomers to address key outstanding questions about the life cycle of matter and energy driving the formation […]

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The BLAST Observatory: A Sensitivity Study for Far-IR Balloon-borne Polarimeters

Posted by dbos January 25, 2024February 5, 2024Stanford

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Non-symmetrical sparking may hint “zits” on a pulsar surface

Posted by dbos January 25, 2024Peking

Kavli Affiliate: Renxin Xu | First 5 Authors: Zhengli Wang, Jiguang Lu, Jingchen Jiang, Shunshun Cao, Weiyang Wang | Summary: Pulsar electrodynamics could be relevant to the physics of stellar surface, which remains poorly understood for more than half a centenary and is difficult to probe due to the absence of direct and clear observational […]

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GauU-Scene: A Scene Reconstruction Benchmark on Large Scale 3D Reconstruction Dataset Using Gaussian Splatting

Posted by dbos January 25, 2024Peking

Kavli Affiliate: Zhuo Li | First 5 Authors: Butian Xiong, Zhuo Li, Zhen Li, , | Summary: We introduce a novel large-scale scene reconstruction benchmark using the newly developed 3D representation approach, Gaussian Splatting, on our expansive U-Scene dataset. U-Scene encompasses over one and a half square kilometres, featuring a comprehensive RGB dataset coupled with […]

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Comparison between time-domain and frequency-domain Bayesian inferences to inspiral-merger-ringdown gravitational-wave signals

Posted by dbos January 25, 2024February 5, 2024Peking

Kavli Affiliate: Lijing Shao | First 5 Authors: Hai-Tian Wang, Lijing Shao, , , | Summary: Time-domain (TD) Bayesian inference is important in ringdown analysis for gravitational wave (GW) astronomy. The validity of this method has been well studied by Isi and Farr [1]. Using GW190521 as an example, we study the TD method in […]

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