Results 101 to 110 of about 41,638 (224)

High-spectral resolution solar microwave observations [PDF]

The application of high-spectral resolution microwave observations to the study of solar activity is discussed with particular emphasis on the frequency dependence of microwave emission from solar active regions.
Hurford, G. J.
core   +1 more source

Multispacecraft Observations of Protons and Helium Nuclei in Some Solar Energetic Particle Events toward the Maximum of Cycle 25

The Astrophysical Journal
The intricate behavior of particle acceleration and transport mechanisms complicates the overall efforts in formulating a comprehensive understanding of solar energetic particle (SEP) events; these efforts include observations of low-energy particles ...
S. Bartocci, R. Battiston, S. Benella, S. Beolè, W. J. Burger, P. Cipollone, A. Contin, M. Cristoforetti, C. De Donato, C. De Santis, A. Di Luca, F. M. Follega, G. Gebbia, R. Iuppa, M. Laurenza, A. Lega, M. Lolli, M. Martucci, G. Masciantonio, M. Mergè, M. Mese, C. Neubuser, R. Nicolaidis, F. Nozzoli, A. Oliva, G. Osteria, F. Palma, B. Panico, F. Perfetto, A. Perinelli, P. Picozza, E. Ricci, M. Ricci, S. B. Ricciarini, Z. Sahnoun, U. Savino, V. Scotti, M. Sorbara, A. Sotgiu, R. Sparvoli, P. Ubertini, V. Vilona, S. Zoffoli, P. Zuccon   +43 more
doaj   +1 more source

Coronal and chromospheric physics [PDF]

Achievements and completed results are discussed for investigations covering solar activity during the solar maximum mission and the solar maximum year; other studies of solar activity and variability; infrared and submillimeter photometry; solar-related
Jefferies, J. T., Landman, D. A., Orrall, F. Q.   +2 more
core   +1 more source

Energy Transport and Heating by Nonthermal Electrons in a Turbulent Solar Flare Environment

The Astrophysical Journal
The impulsive phase of a solar flare is known to generate strong turbulence and to transfer magnetic energy into accelerated electrons. Recognizing the importance of angular diffusion on the dynamics of the accelerated electrons, we extend previous ...
A. Gordon Emslie, Eduard P. Kontar
doaj   +1 more source

The energy source of the interplanetary medium and the heliosphere [PDF]

The activity of the interplanetary medium arises from occasional transient outbursts of the active corona and, for the most part, from the interaction of fast and slow streams in the solar wind.
Parker, Eugene N.
core   +1 more source

Challenges in Forecasting the Evolution of a Distorted CME Observed During the First Close Solar Orbiter Perihelion

The Astrophysical Journal
Coronal Mass Ejections (CMEs), drivers of the most severe Space Weather disturbances, are often assumed to evolve self-similarly during their propagation.
Alessandro Liberatore, Carlos R. Braga, Manuela Temmer, Greta M. Cappello, Daniele Telloni, Paulett C. Liewer, Angelos Vourlidas, Marco Velli, Daniel Heyner, Hans-Ulrich Auster, Ingo Richter, Daniel Schmid, David Fischer, Christian Möstl   +13 more
doaj   +1 more source

White Light Coronograph (WLC) and Ultra-Violet Coronal Spectrometer (UVCS) [PDF]

The white light coronagraph (WLC) and ultraviolet coronal spectrometer (UVCS) together reveal the corona and the roots of the solar wind from 1.5 to 6 solar radii from Sun center.
Moore, R. L.
core   +1 more source

SuNeRF: 3D Reconstruction of the Solar EUV Corona Using Neural Radiance Fields

The Astrophysical Journal Letters
To understand its evolution and the effects of its eruptive events, the Sun is permanently monitored by multiple satellite missions. The optically thin emission of the solar plasma and the limited number of viewpoints make it challenging to reconstruct ...
Robert Jarolim, Benoit Tremblay, Andrés Muñoz-Jaramillo, Kyriaki-Margarita Bintsi, Anna Jungbluth, Miraflor Santos, Angelos Vourlidas, James P. Mason, Sairam Sundaresan, Cooper Downs, Ronald M. Caplan   +10 more
doaj   +1 more source

Surface Alfven Wave Damping in a 3D Simulation of the Solar Wind

, 2009
Here we investigate the contribution of surface Alfven wave damping to the heating of the solar wind in minima conditions. These waves are present in regions of strong inhomogeneities in density or magnetic field (e.
Cohen, Cranmer, Cranmer, De Pontieu, Esser, Evans, Hasegawa, Heyvaerts, Jatenco-Pereira, Kohl, Lionello, M. Opher, Matthaeus, Matthaeus, Parker, Patsourakos, R. M. Evans, Roussev, Suzuki, T. I. Gombosi, Tomczyk, V. Jatenco-Pereira, Verdini   +22 more
core   +1 more source

Recurrent Jetlets Associated with the Disappearance of a Satellite Spot

The Astrophysical Journal
Recurrent small-scale eruptions are fascinating phenomena in the solar atmosphere, characterized by repeated energy buildup and release over short time intervals. However, their underlying physical mechanisms remain unclear.
Liheng Yang, Xiaoli Yan, Jun Zhang, Zhike Xue, Zhe Xu, Jincheng Wang, Yijun Hou, Yian Zhou, Defang Kong, Roslan Umar, Xinsheng Zhang, Qiaoling Li, Liping Yang   +12 more
doaj   +1 more source