Results 51 to 60 of about 16,769 (212)

Locating Heating Channels of the Solar Corona in a Plage Region with the Aid of High-resolution 10830 Å Filtergrams

The Astrophysical Journal
In this paper, with a set of high-resolution He i 10830 Å filtergrams, we select an area in a plage, very likely an extreme-ultraviolet (EUV) moss area, as an interface layer to follow the clues of coronal heating channels down to the photosphere.
Parida Hashim, Fangyu Xu, Ya Wang, Weijie Meng, Jinhua Shen, Yingna Su, Jianping Li, Zhenyu Jin, Haisheng Ji   +8 more
doaj   +1 more source

On Solving the Coronal Heating Problem

, 2006
This article assesses the current state of understanding of coronal heating, outlines the key elements of a comprehensive strategy for solving the problem, and warns of obstacles that must be overcome along the way.Comment: Accepted by Solar Physics ...
A. A. Pevtsov, A. A. van Ballegooijen, A. Bhattacharjee, A. De Groof, A. I. Braginskii, A. R. Winebarger, A. R. Winebarger, A. R. Winebarger, A. R. Winebarger, A. W. Hood, B. Edlen, B. Schmieder, B. V. Gudiksen, B. V. Gudiksen, B. V. Gudiksen, C. A. Mendoza-Briceno, C. H. Mandrini, C. J. Schrijver, C. J. Schrijver, C. J. Schrijver, C. J. Schrijver, C. J. Schrijver, C. J. Schrijver, C. Litwin, C. R. Foley, D. A. N. Mueller, D. A. Uzdensky, D. Berghmans, D. Biskamp, D. L. Hendrix, D. O. Gómez, D. Spadaro, D. Spadaro, D. Spadaro, D. T. Woods, D. W. Longcope, D. W. Longcope, D. W. Longcope, D. W. Savin, E. Landi, E. N. Parker, E. N. Parker, E. N. Parker, E. N. Parker, E. R. Priest, E. R. Priest, F. Q. Orrall, F. Reale, F. Reale, G. Del Zanna, G. Einaudi, G. H. Fisher, G. L. Withbroe, G. Vekstein, G. W. Inverarity, H. P. Warren, H. P. Warren, H. P. Warren, H. Peter, H. Socas-Navarro, I. De Moortel, I. Domínguez Cerdeña, J. A. Ionson, J. A. Ionson, J. A. Klimchuk, J. A. Klimchuk, J. A. Klimchuk, J. A. Klimchuk, J. A. Klimchuk, J. B. Taylor, J. B. Zirker, J. Birn, J. C. Raymond, J. D. Scudder, J. F. Drake, J. F. Luciani, J. F. Vesecky, J. Heyvaerts, J. J. Aly, J. Lean, J. M. Davila, J. M. Fontenla, J. M. Fontenla, J. T. Karpen, J. T. Karpen, J. T. Karpen, J. T. Karpen, J. T. Mariska, J. T. Schmelz, J. T. Schmelz, J. T. Schmelz, J. T. Schmelz, J. V. Hollweg, J. V. Hollweg, J. V. Hollweg, J. W. Brosius, James A. Klimchuk, K. Galsgaard, K. P. Dere, L. J. Porter, L. J. Porter, L. M. Sarro, L. Ofman, L. Ofman, L. Ofman, M. A. Berger, M. A. Weber, M. C. López Fuentes, M. G. Linton, M. Hoshino, M. J. Aschwanden, M. J. Aschwanden, M. J. Aschwanden, M. J. Aschwanden, M. J. Aschwanden, M. J. Aschwanden, M. Ugai, N. Nitta, P. A. Sturrock, P. C. H. Martens, P. Dmitruk, P. Démoulin, P. J. Cargill, P. J. Cargill, P. J. Cargill, P. L. Similon, P. Mazzotta, P. Testa, R. A. Kopp, R. B. Dahlburg, R. B. Dahlburg, R. Erdélyi, R. F. Stein, R. K. Ulrich, R. L. Moore, R. Lionello, R. Lionello, R. M. Close, R. M. Kulsrud, R. Muller, R. Muller, R. Roussel-Dupree, R. S. Steinolfson, R. W. Walsh, R. W. Walsh, R.W Walsh, S. J. Bradshaw, S. J. Bradshaw, S. K. Antiochos, S. K. Antiochos, S. K. Antiochos, S. K. Antiochos, S. K. Antiochos, S. K. Solanki, S. Nagata, S. Patsourakos, S. Poedts, S. Yashiro, T. E. Berger, T. G. Forbes, T. I. Gombosi, T. J. Bogdan, T. Shimizu, T. Yokoyama, U. Feldman, U. Feldman, U. Feldman, U. Narain, V. M. Nakariakov, W. Collins, W. Grotrian, Y. Mok   +171 more
core   +1 more source

The Heating of Solar Coronal Loops by Alfvén Wave Turbulence [PDF]

The Astrophysical Journal, 2017
Abstract In this paper we further develop a model for the heating of coronal loops by Alfvén wave turbulence (AWT). The Alfvén waves are assumed to be launched from a collection of kilogauss flux tubes in the photosphere at the two ends of the loop.
A. A. van Ballegooijen, M. Asgari-Targhi, A. Voss   +2 more
openaire   +4 more sources

Recent Development in Designing Electrocatalysts for Efficient and Selective Ammonia Oxidation Reaction

Advanced Energy and Sustainability Research, Volume 7, Issue 4, April 2026.
Ammonia oxidation reaction is a promising candidate for renewable energy conversion. The recent considerable progress in its mechanism understanding and catalyst development are summarized here along with the remaining challenges and perspectives regarding future development strategies.
Yeyu Deng, Zhixian Bao, Yuan Huang, Mingxin Cui, Yuan Chen, Hao Li, Li Wei   +6 more
wiley   +1 more source

Joule Heating and Anomalous Resistivity in the Solar Corona [PDF]

, 2008
Recent radioastronomical observations of Faraday rotation in the solar corona can be interpreted as evidence for coronal currents, with values as large as $2.5 \times 10^9$ Amperes (Spangler 2007).
Spangler, Steven R.
core   +4 more sources

Hyperdiffusion as a Mechanism for Solar Coronal Heating [PDF]

The Astrophysical Journal, 2008
9 pages (emulateapj style), 4 figures, ApJ, in press (v. 679; June 1, 2008)
van Ballegooijen, A. A., Cranmer, S. R.
openaire   +2 more sources

Accelerating Surface Composition Characterization of Thin‐Film Materials Libraries Using Multi‐Output Gaussian Process Regression

Advanced Intelligent Discovery, Volume 2, Issue 2, April 2026.
To integrate surface analysis into materials discovery workflows, Gaussian process regression is used to accurately predict surface compositions from rapidly acquired volume composition data (obtained by energy‐dispersive X‐ray spectroscopy), drastically reducing the number of required surface measurements on thin‐film materials libraries.
Felix Thelen, Florian Lourens, Alfred Ludwig   +2 more
wiley   +1 more source

Simulating the Solar Corona with Multiple Solar Photospheric Magnetic Maps during the 2024 April 8 Total Solar Eclipse

The Astrophysical Journal
The 2024 April 8 total solar eclipse provides a unique opportunity to study the solar corona. This work presents our simulations of the solar corona at the time of the eclipse based on magnetohydrodynamic modeling performed with the Alfvén Wave Solar ...
Xianyu Liu, Weihao Liu, Ward B. Manchester IV, Daniel T. Welling, Gábor Tóth, Tamas I. Gombosi, Marc L. DeRosa, Luca Bertello, Alexei A. Pevtsov, Alexander A. Pevtsov, Kevin Reardon, Kathryn Wilbanks, Amy Rewoldt, Lulu Zhao   +13 more
doaj   +1 more source

Are Nonthermal Velocities in Active Region Coronal Loops Anisotropic?

The Astrophysical Journal, 2023
We have measured line widths in active region coronal loops in order to determine whether the nonthermal broadening is anisotropic with respect to the magnetic field direction. These nonthermal velocities are caused by unresolved fluid motions.
Michael Hahn, Mahboubeh Asgari-Targhi, Daniel Wolf Savin   +2 more
doaj   +1 more source

Future high-resolution and high-cadence observations for unraveling small-scale explosive solar features

Frontiers in Astronomy and Space Sciences, 2023
Solar coronal jets are frequently occurring collimated ejections of solar plasma, originating from magnetically mixed polarity locations on the Sun of size scale comparable to that of a supergranule.
Alphonse C. Sterling, Ronald L. Moore, Ronald L. Moore, Navdeep K. Panesar, Navdeep K. Panesar, Tanmoy Samanta, Sanjiv K. Tiwari, Sanjiv K. Tiwari, Sabrina L. Savage   +8 more
doaj   +1 more source