Results 81 to 90 of about 14,687 (203)

Turbulence in a Coronal Loop Excited by Photospheric Motions

Atmosphere, 2020
Photospheric motions are believed to be the source of coronal heating and of velocity fluctuations detected in the solar corona. A numerical model, based on the shell technique applied on reduced magnetohydrodynamics equations, is used to represent ...
Giuseppina Nigro, Francesco Malara, Antonio Vecchio, Leonardo Primavera, Francesca Di Mare, Vincenzo Carbone, Pierluigi Veltri   +6 more
doaj   +1 more source

Coronal Loop Heating by Nearly Incompressible Magnetohydrodynamic and Reduced Magnetohydrodynamic Turbulence Models

The Astrophysical Journal, 2023
The transport of waves and turbulence beyond the photosphere is central to the coronal heating problem. Turbulence in the quiet solar corona has been modeled on the basis of the nearly incompressible magnetohydrodynamic (NI MHD) theory to describe the ...
M. S. Yalim, G. P. Zank, M. Asgari-Targhi   +2 more
doaj   +1 more source

Relating magnetic reconnection to coronal heating

, 2015
It is clear that the solar corona is being heated and that coronal magnetic fields undergo reconnection all the time. Here we attempt to show that these two facts are in fact related - i.e. coronal reconnection generates heat.
Longcope, Dana W., Tarr, Lucas A.
core   +1 more source

STEREO REleASE+: Adding Robustness to Solar Proton Event Forecasting in the Heliosphere by Means of Automated Recognition of Type‐III Radio Bursts

Space Weather, Volume 23, Issue 12, December 2025.
Abstract This work reports on the real‐time implementation of a local solar proton event forecasting system at the Solar Terrestrial Relations Observatory—Ahead (STEREO‐A) spacecraft, namely STEREO REleASE+. The forecasting uses the finding that relativistic electrons provide the “earliest indication” that a solar particle event has started, arriving ...
Arik Posner, Olga Ε. Malandraki, Kostas Tziotziou, Michalis Karavolos, Henrik Dröge, Bernd Heber, Patrick Kühl, Lefteris Tsipis   +7 more
wiley   +1 more source

Are Heating Events in the Quiet Solar Corona Small Flares? Multiwavelength Observations of Individual Events [PDF]

Solar Physics, 2000
Temporary enhancements of the coronal emission measure in a quiet region have been shown to constitute a significant energy input. Here some relatively large events are studied for simultaneous brightenings in transition region lines and in radio emission. Associated emissions are discussed and tested for characteristics known from full-sized impulsive
Krucker, Sam, Benz, Arnold O.
openaire   +2 more sources

Antimicrobial prescribing guidelines for horses in Australia

Australian Veterinary Journal, Volume 103, Issue 12, Page 781-889, December 2025.
The growing problem of antimicrobial resistance also affects equine veterinarians with increasing frequency. Antimicrobial stewardship and responsible prescribing are essential for a future in which effective antimicrobials are available, as it is unlikely that new antimicrobials will become available for use in horses.
L Hardefeldt, K Thomas, S Page, J Norris, G Browning, C El Hage, A Stewart, J Gilkerson, G Muscatello, D Verwilghen, G van Galen, J Bauquier, R Cuming, B Reynolds, C Whittaker, E Wilkes, J Clulow, C Burden, L Begg   +18 more
wiley   +1 more source

The Structure and Dynamics of the Upper Chromosphere and Lower Transition Region as Revealed by the Subarcsecond VAULT Observations [PDF]

, 2009
The Very high Angular resolution ULtraviolet Telescope (VAULT) is a sounding rocket payload built to study the crucial interface between the solar chromosphere and the corona by observing the strongest line in the solar spectrum, the Ly-a line at 1216 ...
A. Vourlidas, A. Vourlidas, A.G. Wijn de, A.M. Title, A.O. Benz, B. de Pontieu, B. Pontieu de, B. Pontieu de, B. Pontieu De, B. Sanchez Andrade-Nuño, C. Emerich, C. M. Korendyke, C.J. Schrijver, C.J. Schrijver, C.M. Korendyke, D. Berghmans, D.E. Innes, D.K. Prinz, D.K. Prinz, E. Landi, E. Landi, F. Budnik, G. Stenborg, G. Tsiropoula, H. Peter, I. Nestoras, J. Fontenla, J. Koza, J. Trujillo Bueno, J.D. Purcell, J.D.F. Bartoe, J.E. Vernazza, J.F. Dowdy Jr., J.M. Fontenla, K. Wilhelm, K. Wilhelm, K.G. Puschmann, L. Ofman, L. Teriaca, L.D. Xia, P. Gouttebroze, P. Gouttebroze, P. Judge, P. Judge, R.J. Rutten, R.M. Bonnet, R.M. Bonnet, S. Krucker, S. Patsourakos, S. Patsourakos, S.C. Miller Jr., S.K. Antiochos, T.J. Okamoto, T.N. Woods, U. Feldman, U. Feldman, U. Feldman, U. Feldman, U. Schühle, W. Curdt, Y. Lin, Ø. Langangen   +61 more
core   +2 more sources

Exploring the Validation Results of the Advanced Solar Particle Events Casting System (ASPECS)

Space Weather, Volume 23, Issue 11, November 2025.
Abstract Solar Energetic Particle (SEP) events can adversely affect space and ground‐based systems. Space weather effects associated with SEP events can impact communication and navigation systems, spacecraft electronics and operations, space power systems, crewed space missions, and commercial aircraft operations.
Athanasios Papaioannou, George Vasalos, Kathryn Whitman, Philip Quinn, Anastasios Anastasiadis, Markus Leila Mays, Janet Barzilla, Chinwe Didigu, Christopher Light, Claudio Corti, Joycelyn Jones, Anna Chulaki, Hannah Hermann, Edward Semones   +13 more
wiley   +1 more source

Observations of Mini Coronal Dimmings Caused by Small-scale Eruptions in the Quiet Sun

The Astrophysical Journal Letters, 2023
Small-scale eruptions could play an important role in coronal heating, generation of solar energetic particles (SEPs), and mass source of the solar wind.
Rui Wang, Ying D. Liu, Xiaowei Zhao, Huidong Hu   +3 more
doaj   +1 more source

Space Weather Impact of Three Solar Flares Observed by the POEMAS Telescope at 45 and 90 GHz

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract Solar flares are often associated with coronal mass ejections (CMEs) that, when directed toward Earth, can disrupt the magnetosphere and impact space weather. In this study, we investigate three long‐duration solar flares observed in 2012 by the POlarization Emission of Millimeter Activity at the Sun (POEMAS) telescopes at 45 and 90 GHz.
Adriana Valio, Karla F. Lopez, José Luis Gamonal Valenzuela, Ruben M. Romero Ramírez, Dougas F. da Silva   +4 more
wiley   +1 more source