Results 71 to 80 of about 41,536 (207)

Nanoflare Evidence from Analysis of the X-Ray Variability of an Active Region Observed with Hinode/XRT [PDF]

, 2012
The heating of the solar corona is one of the big questions in astrophysics. Rapid pulses called nanoflares are among the best candidate mechanisms.
Kano, R., Klimchuk, J. A., Miceli, M., Reale, F., Terzo, S., Tsuneta, S.   +5 more
core   +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

Observations of the 2019 April 4 Solar Energetic Particle Event at the Parker Solar Probe [PDF]

, 2019
A solar energetic particle event was detected by the Integrated Science Investigation of the Sun (IS⊙IS) instrument suite on Parker Solar Probe (PSP) on 2019 April 4 when the spacecraft was inside of 0.17 au and less than 1 day before its second ...
Allen, R. C., Bale, S. D., Case, A. W., Christian, E. R., Cohen, C. M. S., Cummings, A. C., Davis, A. J., Desai, M. I., Giacalone, J., Hill, M. E., Joyce, C. J., Kasper, J. C., Korreck, K. E., Krimigis, S. M., Labrador, A. W., Leske, R. A., Livi, R., MacDowall, R. J., Malandraki, O., Matthaeus, W. H., McComas, D. J., McNutt, R. L., Jr., Mewaldt, R. A., Mitchell, D. G., Poduval, B., Posner, A., Pulupa, M., Rankin, J. S., Roelof, E. C., Schwadron, N. A., Stevens, M. L., Stone, E. C., Szalay, J. R., Vourlidas, A., Whittlesey, P., Wiedenbeck, M. E.   +35 more
core   +3 more sources

How Are the Abnormally Hot Chromosphere and Corona Heated by the Solar Magnetic Fields?

The Astrophysical Journal
The corona is a structure possessed by stars, including the Sun. The abnormal heating of the solar corona and chromosphere is one of the greatest mysteries in modern astronomy.
K. J. Li, J. C. Xu, W. Feng, J. L. Xie, X. J. Shi, L. H. Deng   +5 more
doaj   +1 more source

Effects of coronal disturbances on the ionization state of the solar wind [PDF]

A theoretical investigation of the relationship between physical conditions in coronal disturbances and the ionization states of the resulting perturbed solar wind was conducted.
Withbroe, G. L.
core   +1 more source

SWAP Observations of Post-flare Giant Arches in the Long-Duration 14 October 2014 Solar Eruption

, 2015
On 14 October 2014 the Sun Watcher with Active Pixels and Image Processing (SWAP) EUV solar telescope on-board the Project for On-Board Autonomy 2 (PROBA2) spacecraft observed an eruption that led to the formation of perhaps the largest post-eruptive ...
Seaton, Daniel B., West, Matthew J.
core   +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

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

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

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