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The atmospheric circulation in Venus is well known to exhibit strong super-rotation. However, the atmospheric mechanisms responsible for the formation of this super-rotation are still not fully understood. In this work, we developed a new…

Earth and Planetary Astrophysics · Physics 2016-12-07 João M. Mendonça , Peter L. Read

Radiative feedback from massive stars is a key process to understand how HII regions may enhance or inhibit star formation in pillars and globules at the interface with molecular clouds. We aim to contribute to model the interactions…

Solar and Stellar Astrophysics · Physics 2015-06-03 P. Tremblin , E. Audit , V. Minier , N. Schneider

Sub-nuclear fluctuations in the initial state of heavy-ion collisions impact not only transverse long-range correlations of small systems, but also the creation of longitudinal structures, seen in particle detectors as longitudinal…

Nuclear Theory · Physics 2025-04-02 Oscar Garcia-Montero , Sören Schlichting , Jie Zhu

We model the deepest observable layers of dark sunspot umbral atmospheres in terms of an empirical model which equally describes observed near infrared continuum intensities and line profiles. We use the umbral continuum intensity at 1.67…

Solar and Stellar Astrophysics · Physics 2012-10-17 Goetz Stellmacher , Eberhard Wiehr

We present a detailed three-dimensional radiative-hydrodynamical simulation of the well known irradiated exoplanet HD189733b. Our model solves the fully compressible Navier-Stokes equations coupled to wavelength-dependent radiative transfer…

Earth and Planetary Astrophysics · Physics 2015-06-12 Ian Dobbs-Dixon , Eric Agol

Convection initiation (CI) nowcasting remains a challenging problem for both numerical weather prediction models and existing nowcasting algorithms. In this study, object-based probabilistic deep learning models are developed to predict CI…

Atmospheric and Oceanic Physics · Physics 2025-07-23 Da Fan , Steven J. Greybush , David John Gagne , Eugene E. Clothiaux

The anomalously large radii of strongly irradiated exoplanets have remained a major puzzle in astronomy. Based on a 2D steady state atmospheric circulation model, the validity of which is assessed by comparison to 3D calculations, we reveal…

Earth and Planetary Astrophysics · Physics 2017-05-31 P. Tremblin , G. Chabrier , N. J. Mayne , D. S. Amundsen , I. Baraffe , F. Debras , B. Drummond , J. Manners , S. Fromang

We adopt the deep learning method CASI (Convolutional Approach to Shell Identification) and extend it to 3D (CASI-3D) to identify signatures of stellar feedback in molecular line spectra, such as 13CO. We adopt magneto-hydrodynamics…

Astrophysics of Galaxies · Physics 2020-02-19 Duo Xu , Stella S. R. Offner , Robert Gutermuth , Colin Van Oort

This paper experimentally investigates the convection in a fast rotating Tangent Cylinder (TC), for Ekman numbers down to $E=3.36\times10^{-6}$, in a configuration relevant to the liquid core of the Earth. In the apparatus, the TC results…

Fluid Dynamics · Physics 2018-05-09 Kélig Aujogue , Alban Pothérat , Binod Sreenivasan , François Debray

Interactions between galaxies leave distinguishable imprints in the form of tidal features which hold important clues about their mass assembly. Unfortunately, these structures are difficult to detect because they are low surface brightness…

We define a new strategy to scan jet substructure in heavy-ion collisions. The scope is multifold: (i) test the dominance of vacuum jet dynamics at early times, (ii) capture the transition from coherent to incoherent jet energy loss, and…

High Energy Physics - Phenomenology · Physics 2024-09-05 Leticia Cunqueiro , Daniel Pablos , Alba Soto-Ontoso , Martin Spousta , Adam Takacs , Marta Verweij

High transverse momentum (P_T) processes are considered to be an important tool to probe and understand the medium produced in ultrarelativistic heavy-ion collisions via the interaction of hard, perturbatively produced partons with the…

High Energy Physics - Phenomenology · Physics 2015-05-28 Thorsten Renk , Kari. J. Eskola

Polluted white dwarfs (WDs) with small surface convection zones deposit significant concentrations of heavy elements to the underlying radiative interior, presumably driving thermohaline convection. Current models of polluted WDs frequently…

Solar and Stellar Astrophysics · Physics 2025-03-28 Imogen G. Cresswell , Adrian E. Fraser , Evan B. Bauer , Evan H. Anders , Benjamin P. Brown

High-velocity clouds (HVCs) may fuel future star formation in the Milky Way, but they must first survive their passage through the hot halo. While recent work has improved our understanding of the survival criterion for cloud-wind…

Astrophysics of Galaxies · Physics 2025-08-28 Lori E. Porter , Matthew Abruzzo , Greg L. Bryan , Mary Putman , Yong Zheng , Drummond Fielding

Tidal disruption events (TDEs) may occur in supermassive black holes (SMBHs) surrounded by clouds. TDEs can generate ultrafast and large opening-angle outflow with a velocity of $\sim$ 0.01--0.2 c, which will collide with clouds with time…

High Energy Astrophysical Phenomena · Physics 2022-11-30 Jiashi Chen , Wei Wang

Tropical cyclones cause significant inland hazards, including wind damage and freshwater flooding, that depend strongly on how storm intensity evolves at and after landfall. Existing theoretical predictions for the time-dependent and…

Atmospheric and Oceanic Physics · Physics 2021-10-27 Jie Chen , Daniel R. Chavas

Weather radar echoes, correlated in both space and time, are the most important input data for short-term precipitation forecast. Motivated by real datasets, this paper is concerned with the spatio-temporal modeling of two-dimensional radar…

Methodology · Statistics 2016-10-03 Xiao Liu , Viknesswaran Gopal , Jayant Kalagnanam

Generative Deep Learning is a powerful tool for modeling of the Madden-Julian oscillation (MJO) in the tropics, yet its relationship to traditional theoretical frameworks remains poorly understood. Here we propose a video diffusion model,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Sulian Thual , Feiyang Cai , Jingjing Wang , Feng Luo

We study how different opacity-temperature scalings affect the dynamical evolution of irradiated gas clouds using time-dependent, radiation-hydrodynamics (rad-HD) simulations. When clouds are optically thick, the bright side heats up and…

High Energy Astrophysical Phenomena · Physics 2020-02-12 Sergei Dyda , Daniel Proga , Christopher S Reynolds

There is a critical need for efficient and reliable active flow control strategies to reduce drag and noise in aerospace and marine engineering applications. While traditional full-order models based on the Navier-Stokes equations are not…

Fluid Dynamics · Physics 2022-11-02 Indu Kant Deo , Rui Gao , Rajeev Jaiman