Observational Signatures of Disk Winds in Protoplanetary Disks: Differentiating Magnetized and Photoevaporative Outflows With Fully Coupled Thermochemistry

Posted by Peking

Kavli Affiliate: Lile Wang | First 5 Authors: Xiao Hu, Jaehan Bae, Zhaohuan Zhu, Lile Wang, | Summary: Magnetized winds and photoevaporative winds are critical in shaping protoplanetary disk evolution. Using 2D axisymmetric (magneto-)hydrodynamic simulations with Athena++ implementing fully coupled thermochemistry, we investigate the signatures of the two winds in CO and [C~I] ALMA observations, […]


Continue.. Observational Signatures of Disk Winds in Protoplanetary Disks: Differentiating Magnetized and Photoevaporative Outflows With Fully Coupled Thermochemistry

The effects of different cooling and heating function models on a simulated analog of NGC300

Posted by Chicago

Kavli Affiliate: Nickolay Y. Gnedin | First 5 Authors: David Robinson, Camille Avestruz, Nickolay Y. Gnedin, Vadim A. Semenov, | Summary: Gas cooling and heating rates are vital components of hydrodynamic simulations. However, they are computationally expensive to evaluate exactly with chemical networks or photoionization codes. We compare two different approximation schemes for gas cooling […]


Continue.. The effects of different cooling and heating function models on a simulated analog of NGC300

Accurate method for ultralight axion CMB and matter power spectra

Posted by Chicago

Kavli Affiliate: Wayne Hu | First 5 Authors: Rayne Liu, Wayne Hu, Daniel Grin, , | Summary: Ultralight axions (ULAs) with masses $10^{-33} lesssim m/{rm eV} lesssim 10^{-12}$ are well motivated in string-inspired models and can be part or all of the dark energy or the dark matter in this range. Since the ULA field […]


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Pointing Accuracy Improvements for the South Pole Telescope with Machine Learning

Posted by Stanford

Kavli Affiliate: Chao-Lin Kuo | First 5 Authors: P. M. Chichura, A. Rahlin, A. J. Anderson, B. Ansarinejad, M. Archipley | Summary: We present improvements to the pointing accuracy of the South Pole Telescope (SPT) using machine learning. The ability of the SPT to point accurately at the sky is limited by its structural imperfections, […]


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Inverse Design of Nonlinear Mechanics of Bio-inspired Materials Through Interface Engineering and Bayesian Optimization

Posted by Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Wei Zhang, Mingjian Tang, Haoxuan Mu, Xingzi Yang, Xiaowei Zeng | Summary: In many biological materials such as nacre and bone, the material structure consists of hard grains and soft interfaces, with the interfaces playing a significant role in the material’s mechanical behavior. This type of structures […]


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ClarityEthic: Explainable Moral Judgment Utilizing Contrastive Ethical Insights from Large Language Models

Posted by Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Yuxi Sun, Wei Gao, Jing Ma, Hongzhan Lin, Ziyang Luo | Summary: With the rise and widespread use of Large Language Models (LLMs), ensuring their safety is crucial to prevent harm to humans and promote ethical behaviors. However, directly assessing value valence (i.e., support or oppose) by […]


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Data-Driven Modeling for On-Demand Flow Prescription in Fan-Array Wind Tunnels

Posted by Caltech

Kavli Affiliate: Morteza Gharib | First 5 Authors: Alejandro A. Stefan-Zavala, Isabel Scherl, Ioannis Mandralis, Steven L. Brunton, Morteza Gharib | Summary: Fan-array wind tunnels are an emerging technology to design bespoke wind fields through grids of individually controllable fans. This design is especially suited for the turbulent, dynamic, non-uniform flow conditions found close to […]


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Vortex-Induced Rings and Gaps within Protoplanetary Disks

Posted by Peking

Kavli Affiliate: Ruobing Dong | First 5 Authors: Xiaoyi Ma, Pinghui Huang, Cong Yu, Ruobing Dong, | Summary: Observations of protoplanetary disks have revealed the presence of both crescent-shaped and ring-like structures in dust continuum emission. These crescents are thought to arise from dust-trapping vortices generated by the Rossby Wave Instability (RWI), which induces density […]


Continue.. Vortex-Induced Rings and Gaps within Protoplanetary Disks

Vortex-Induced Rings and Gaps within Protoplanetary Disks

Posted by Peking

Kavli Affiliate: Ruobing Dong | First 5 Authors: Xiaoyi Ma, Pinghui Huang, Cong Yu, Ruobing Dong, | Summary: Observations of protoplanetary disks have revealed the presence of both crescent-shaped and ring-like structures in dust continuum emission. These crescents are thought to arise from dust-trapping vortices generated by the Rossby Wave Instability (RWI), which induces density […]


Continue.. Vortex-Induced Rings and Gaps within Protoplanetary Disks