Results 31 to 40 of about 1,535,639 (228)

The Wisconsin Plasma Astrophysics Laboratory

, 2015
The Wisconsin Plasma Astrophysics Laboratory (WiPAL) is a flexible user facility designed to study a range of astrophysically relevant plasma processes as well as novel geometries that mimic astrophysical systems. A multi-cusp magnetic bucket constructed
Forest, CB, Endrizzi, D, Roesler, F, Siller, R, Khalzov, IV, Clark, M, Spitkovsky, Anatoly, Egedal, J, Stemo, A, Li, H, Schekochihin, A, Olson, J, Zweibel, E, Flanagan, K, Miesch, M, Cooper, CM, Schmitz, O, Brookhart, M, Peterson, E, Wallace, J, Nornberg, M, Desangles, V, Weisberg, D, Milhone, J   +23 more
core   +1 more source

Non-thermal electron acceleration in turbulent, post-flare coronal loops

Astronomy & Astrophysics
Context. The generation of energetic, non-thermal electrons during solar flares plays a critical role in energy transportation from the corona to the chromosphere, producing regions of observed intense X-ray emission.
Mora C., Bacchini F., Keppens R.
doaj   +1 more source

Capturing Thermal Effects Beyond the Zero‐Temperature Approximation Using the Uniform Electron Gas

Contributions to Plasma Physics, EarlyView.
ABSTRACT Density functional theory at finite temperatures often relies on the zero‐temperature approximation, which uses a ground‐state exchange‐correlation functional with thermalized densities. This approach, however, neglects the explicit temperature dependence of the exchange‐correlation free energy—a key factor in regimes such as warm dense matter,
Brianna Aguilar‐Solis, Brittany P. Harding, Aurora Pribram‐Jones   +2 more
wiley   +1 more source

Modelling electron beams in flux-rope coronal mass ejections

Astronomy & Astrophysics
Context. Counterstreaming suprathermal electron beams are frequently observed within interplanetary coronal mass ejections (CMEs) and are commonly interpreted as signatures of particle trapping along closed magnetic flux ropes.
Flossie M., Wijsen N., Poedts S.
doaj   +1 more source

Exact Calculation of Nonideal Fields Demonstrates Their Dominance of Injection in Relativistic Reconnection

The Astrophysical Journal Letters, 2023
Magnetic reconnection is an important source of energetic particles in systems ranging from astrophysics to the laboratory. The large separation of spatiotemporal scales involved makes it critical to determine the minimum physical model containing the ...
Samuel R. Totorica, Seiji Zenitani, Shuichi Matsukiyo, Mami Machida, Kazuhiro Sekiguchi, Amitava Bhattacharjee   +5 more
doaj   +1 more source

Unveiling New Perspectives on the Hirota–Maccari System With Multiplicative White Noise

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT In this study, we delve into the stochastic Hirota–Maccari system, which is subjected to multiplicative noise according to the Itô sense. The stochastic Hirota–Maccari system is significant for its ability to accurately model how stochastic affects nonlinear wave propagation, providing valuable insights into complex systems like fluid dynamics
Mohamed E. M. Alngar, Khaled A. Gepreel, Reham M. A. Shohib, Yakup Yildirim   +3 more
wiley   +1 more source

Microphysics in Astrophysical Plasmas [PDF]

Space Science Reviews, 2013
Although macroscale features dominate astrophysical images and energetics, the physics is controlled through microscale transport processes (conduction, diffusion) that mediate the flow of mass, momentum, energy, and charge. These microphysical processes manifest themselves in key (all) boundary layers and also operate within the body of the plasma ...
Schwartz, Steven J., Zweibel, Ellen G., Goldman, Martin   +2 more
openaire   +1 more source

Comparing Solar Structure Detection Methods in SDO/AIA Observations and the Application to Raw Uncalibrated Data

Journal of Geophysical Research: Machine Learning and Computation
Recent advances in solar physics increasingly rely on automated identification of coronal structures using machine learning. Yet most studies emphasize scientific performance without evaluating feasibility for onboard deployment to prioritize downlink ...
P. Gonidakis, F. Carella, E. Dineva, H‐J. Jeong, P. Antunes, A. Podobas, S. Raptis, V. Toy‐Edens, M. Jin, S. Poedts, J. Magdalenic, G. Miloshevich   +11 more
doaj   +1 more source

Construction optimization and functional applications of fluorescent nanodiamonds

Responsive Materials, EarlyView.
This review summarizes synthesis, surface modification and optical properties of fluorescent nanodiamonds. Their advances in quantum sensing, single‐photon emission and biomedicine are discussed, and existing challenges and future directions are presented.
Yunpeng Yang, Sen Zhang, Chao Chen, Wensi Yang, Zuanquan Chen, Rui Fan, Linlin Liu, Benjian Liu, Kang Liu, Zhibo Zhang, Bing Dai, Jiaqi Zhu   +11 more
wiley   +1 more source

Critical Kinetic Plasma Processes In Relativistic Astrophysics [PDF]

, 2005
Plasma astrophysics deals with collective plasma processes in astrophysical scenarios. As observational astronomy pushes towards unprecedented resolutions in space and time, the focus of theoretical research necessarily ventures towards a description of ...
Jaroschek, Claus
core   +1 more source