Results 41 to 50 of about 41,638 (224)

Data-driven model of the solar corona above an active region [PDF]

Astronomy & Astrophysics, 2019
Aims. We aim to reproduce the structure of the corona above a solar active region as seen in the extreme ultraviolet (EUV) using a three-dimensional magnetohydrodynamic (3D MHD) model. Methods. The 3D MHD data-driven model solves the induction equation and the mass, momentum, and energy balance.
J. Warnecke, H. Peter
openaire   +3 more sources

Magnetic Fields beneath Active Region Coronal Loops

The Astrophysical Journal
We examine the hypothesis that multipolar magnetic fields advected by photospheric granules can contribute to heating the active chromosphere and corona.
Philip G. Judge, L. Kleint, C. Kuckein
doaj   +1 more source

Alfvén Wave Connection between the Chromosphere and the Corona of the Sun: An Analytical Study

The Astrophysical Journal, 2023
Alfvén waves are closely relevant to the three outstanding problems in the solar corona: coronal heating, solar wind acceleration, and the fractionization of low first ionization potential (FIP) elements.
Jongchul Chae, Kyoung-Sun Lee
doaj   +1 more source

Chromospheric Anemone Jets as Evidence of Ubiquitous Reconnection

, 2008
The heating of the solar chromosphere and corona is a long-standing puzzle in solar physics. Hinode observations show the ubiquitous presence of chromospheric anemone jets outside sunspots in active regions.
A. M. Title, B. W. Lites, Cirtain, H. Watanabe, K. Ichimoto, K. Otsuji, K. Shibata, Katsukawa, N. Nishizuka, Okamoto, R. A. Shine, R. Kitai, S. Nagata, S. Nozawa, S. Tsuneta, S. UeNo, T. D. Tarbell, T. E. Berger, T. J. Okamoto, T. Kawate, T. Matsumoto, T. Nakamura, T. Shimizu, Y. Katsukawa, Y. Suematsu   +24 more
core   +1 more source

Microfluidic Engineering of Chitosan‐Coated Nanoemulsions for Controlled Release and Stability in Space Pharmaceutics

Advanced Materials Technologies, EarlyView.
Microfluidic engineering enables the fabrication of chitosan‐coated, melatonin‐loaded nanoemulsions with controlled release and enhanced physicochemical stability for space pharmaceutics. Interfacial biopolymer coating modulates droplet behavior under accelerated thermal stress and simulated microgravity.
Modupe Adebowale, Nguyen Van Duc Long, Philip M Williams, Volker Hessel   +3 more
wiley   +1 more source

Generation of Fast Magnetoacoustic Waves in the Corona by Impulsive Bursty Reconnection

The Astrophysical Journal
Fast-mode magnetohydrodynamic waves in the solar corona are often known to be produced by solar flares and eruptive prominences. Here, we simulate the effect of the interaction of an external perturbation on a magnetic null in the solar corona, which ...
Sripan Mondal, Abhishekh Kumar Srivastava, David I. Pontin, Eric R. Priest, R. Y. Kwon, Ding Yuan   +5 more
doaj   +1 more source

The role of torsional Alfven waves in coronal heating [PDF]

, 2009
In the context of coronal heating, among the zoo of MHD waves that exist in the solar atmosphere, Alfven waves receive special attention. Indeed, these waves constitute an attractive heating agent due to their ability to carry over the many different ...
Antiochos, Antolin, Antolin, Antolin, Aschwanden, Aschwanden, Aschwanden, Aschwanden, Aschwanden, Brosius, Chae, Cranmer, Erdelyi, Hara, Heggland, Heyvaerts, Hori, K. Shibata, Kigure, Kudoh, Kudoh, Landini, Matsumoto, Mendoza-Briceño, Moriyasu, Muller, Musielak, Nakariakov, Ofman, P. Antolin, Patsourakos, Reale, Ruderman, Takeuchi, Taroyan, Tsuneta, Van Doorsselaere, Verth, Verth, Williams, Yokoyama   +40 more
core   +1 more source

AI‐Assisted IoT‐Enabled ECG Monitoring: Integrating Foundational and Generative AI Tools for Sustainable Smart Healthcare—Recent Trends

AI &Innovation, EarlyView.
ABSTRACT The rapid evolution of the Internet of Things (IoT) has significantly advanced the field of electrocardiogram (ECG) monitoring, enabling real‐time, remote, and patient‐centric cardiac care. This paper presents a comprehensive survey of AI assisted IoT‐based ECG monitoring systems, focusing on the integration of emerging technologies such as ...
Amrita Choudhury, Kandarpa Kumar Sarma, Lachit Dutta   +2 more
wiley   +1 more source

Signatures of Slow Solar Wind Streams from Active Regions in the Inner Corona [PDF]

Solar Physics, 2012
Accepted for publication in Solar Physics; 31 Pages; 13 ...
Slemzin, V., Harra, L., Urnov, A., Kuzin, S., Goryaev, F., Berghmans, D.   +11 more
openaire   +2 more sources

Ubiquitous High-frequency Waves and Disturbances in the Active Region Corona Observed with Cryo-NIRSP

The Astrophysical Journal
The plasma of the solar corona harbors a multitude of coronal wave modes, some of which could be dissipated to provide the required energy and momentum to heat the corona and accelerate the solar wind.
Momchil E. Molnar, Richard Morton, Alin Paraschiv, Chris Gilly, Steven R. Cranmer, Kevin Reardon, Thomas Schad   +6 more
doaj   +1 more source