Results 111 to 120 of about 42,668 (331)

Structure and Evolution of Internally Heated Hot Jupiters

, 2017
Hot Jupiters receive strong stellar irradiation, producing equilibrium temperatures of $1000 - 2500 \ \mathrm{Kelvin}$. Incoming irradiation directly heats just their thin outer layer, down to pressures of $\sim 0.1 \ \mathrm{bars}$.
Komacek, Thaddeus D., Youdin, Andrew N.
core   +1 more source

Exploring the Carbon Simmering Phase: Reaction Rates, Mixing, and the Convective Urca Process [PDF]

, 2017
The neutron excess at the time of explosion provides a powerful discriminant among models of Type Ia supernovae. Recent calculations of the carbon simmering phase in single degenerate progenitors have disagreed about the final neutron excess.
J. Schwab, H'ector Mart'inez-Rodr'iguez, A. Piro, C. Badenes   +3 more
semanticscholar   +1 more source

A Biomarker‐Driven Ovary–Endometrium Organ‐on‐a‐Chip Mimicking 3D Multicellular Complexity and Menstrual Cyclicity for Predicting Reproductive Toxicity

Advanced Science, EarlyView.
We present a dual‐organ, biomarker‐integrated ovaryendometrium organ‐on‐a‐chip that recapitulates 3D tissue complexity, menstrual cycle dynamics, and hormonal crosstalk. This platform enables real‐time, cell‐typespecific fluorescent readouts of reproductive toxicity using ANGPTL4 and SERPINB2 as early‐response reporters.
Soo‐Rim Kim, Eun‐kyung Min, Choon‐Mi Lee, Chan Hum Park, Byung‐Chul Oh, YunJae Jung, In‐Sun Hong   +6 more
wiley   +1 more source

Magnetic Activity Evolution of Solar-like Stars. II. Sph–Ro Evolution of Kepler Main-sequence Targets

The Astrophysical Journal
There is now a large sample of stars observed by the Kepler satellite with measured rotation periods and photometric activity index S _ph . We use this data, in conjunction with stellar interiors models, to explore the interplay of magnetism, rotation ...
Savita Mathur, Ângela R. G. Santos, Zachary R. Claytor, Rafael A. García, Antoine Strugarek, Adam J. Finley, Quentin Noraz, Louis Amard, Paul G. Beck, Alfio Bonanno, Sylvain N. Breton, Allan S. Brun, Lyra Cao, Enrico Corsaro, Diego Godoy-Rivera, Stéphane Mathis, Dinil B. Palakkatharappil, Marc H. Pinsonneault, Jennifer van Saders   +18 more
doaj   +1 more source

Hydrodynamic simulations of shell convection in stellar cores

, 2011
Shell convection driven by nuclear burning in a stellar core is a common hydrodynamic event in the evolution of many types of stars. We encounter and simulate this convection (i) in the helium core of a low-mass red giant during core helium flash leading
A Chieffi, A Weiss, CA Meakin, CA Meakin, F Herwig, HJS Fernando, J Montalbán, L Siess, L Siess, M Mocák, M Mocák, N Iwamoto, NH Brummell, S Cassisi, SW Campbell, TM Brown   +15 more
core   +1 more source

ON THE ROLE OF TACHOCLINES IN SOLAR AND STELLAR DYNAMOS [PDF]

, 2015
Rotational shear layers at the boundary between radiative and convective zones, tachoclines, play a key role in the process of magnetic field generation in solar-like stars.
G. Guerrero, P. Smolarkiewicz, E. Pino, A. Kosovichev, N. Mansour   +4 more
semanticscholar   +1 more source

Thermally Induced Creep and Viscoelastic Behavior of Copper Micropillar Arrays

Advanced Science, EarlyView.
Copper micropillar arrays are fabricated by electrodeposition within through‐glass‐via, and their thermally induced time‐dependent deformation is quantified. Nanoindentation creep, EBSD, and TEM reveal a heat‐treatment‐driven transition between grain‐boundary‐mediated deformation and dislocation‐dominated creep, while Kelvin modeling captures ...
Miao Wang, Jihua Zhang, Libin Gao, Hongwei Chen, Wenbo Luo, Wenlei Li, Mingcheng Chen, Mengru Li, Dongbin Wang, Shuang Li, Ting Liu, Xingzhou Cai, Yong Li, Bin Peng, Wanli Zhang   +14 more
wiley   +1 more source

Properties of Turbulent Convection and Large-scale Flows in a Rotating F-type Star Revealed by 3D Realistic Radiative Hydrodynamic Simulations

The Astrophysical Journal
The nonlinear coupling between stellar convection and rotation is of great interest because it relates to understanding both stellar evolution and activity. We investigate the influence of rotation and the Coriolis force on the dynamics and thermodynamic
Irina N. Kitiashvili, Alexander G. Kosovichev, Alan A. Wray   +2 more
doaj   +1 more source

Critical Limitations in Cryogenic Laser Cooling of Solids: Symmetry‐Related Fluorescence Trapping and Condensation‐Induced Parasitic Heating

Advanced Science, EarlyView.
This study uncovers two overlooked bottlenecks in cryogenic laser cooling of solids: symmetry‐driven fluorescence trapping and water vapor condensation. We demonstrate that breaking sample symmetry enhances fluorescence escape, while condensation dominates parasitic heating below 135 K.
Biao Zhong, Jiayi Zhang, Haodong Yang, Lianzhong Deng, Mauro Tonelli, Ercang Luo   +5 more
wiley   +1 more source

3D Simulations of Semiconvection in Spheres: Turbulent Mixing and Layer Formation

The Astrophysical Journal
Semiconvection occurs in regions of stars and planets that are unstable to overturning convection according to the Schwarzschild criterion, but stable according to the Ledoux criterion.
J. R. Fuentes
doaj   +1 more source