Results 131 to 140 of about 14,709 (209)

Chromospheric evaporation as the driver of helium enrichment in active region solar wind: A case study

Astronomy & Astrophysics
Context. The physical mechanisms of helium abundance (AHe) depletion in the corona and solar wind are closely linked to coronal heating, solar wind origin, and acceleration processes. The relationships between the AHe in the solar wind and the properties
Ma Chi, Fu Hui, Madjarska Maria S., Shi Xinzheng, Huang Zhenghua, Xia Lidong   +5 more
doaj   +1 more source

Collisional damping of surface waves in the solar corona [PDF]

The damping of surface waves by viscosity and heat conduction is evaluated. For the solar corona, it is found that surface waves dissipate efficiently only if their periods are shorter than a few tens of seconds and only if the background magnetic field ...
Gordon, B. E., Hollweg, J. V.
core   +1 more source

Modeling Metric Gyrosynchrotron Radio Emission From the Quiet Solar Corona

The radio emission of the quiet Sun in the metric and decametric bands has not been well studied historically due to limitations of existing instruments. It is nominally dominated by thermal brehmsstrahlung of the solar corona, but may also include significant gyrosynchrotron emission, usually assumed to be weak under quiet conditions. In this work, we
Kozarev, Kamen, Nedal, Mohamed
openaire   +2 more sources

Metric and Decimetric Observations of the Quiet Solar Corona

, 1999
8th SOHO Workshop: Plasma Dynamics and Diagnostics in the Solar Transition Region and ...
Marque, C., Lantos, P., Delouis, J. M., Alissandrakis, C.   +3 more
openaire   +1 more source

Picoflares in the Quiet Solar Corona: Solar Orbiter Observations Halfway to the Sun

13 pages, 7 figures, submitted to Astronomy & Astrophysics (A&A)
Podladchikova, O., Warmuth, A., Harra, L., Dolla, L., Verbeeck, C., Mierla, M., Rodriguez, L., Parenti, S., Georgoulis, M. K., Hofmeister, S. J., Engler, N., West, M. J., Veronig, A. M., Antolin, P., Purkhart, S., Long, D. M., Buchlin, É., Haberreiter, M., Zhukov, A. N., Safari, H., Battaglia, A. F., Soubrié, E., Büchel, V., Gissot, S., De Groof, A., Gyo, M., Halain, J. P., Inhester, B., Kraaikamp, E., Müller, D., Pfiffner, D., Rochus, P., Schuller, F., Smith, P. J., Schmutz, W., Stegen, K.   +35 more
openaire   +2 more sources

Extreme-ultraviolet transient brightenings in the quiet-Sun corona

Astronomy & Astrophysics
Context. The extreme-ultraviolet (EUV) brightenings identified by Solar Orbiter, commonly known as campfires, are the smallest transient brightenings detected to date outside active regions in the solar corona. Aims. In order to understand their possible contribution to quiet-Sun heating, we investigated the spatio-temporal distribution of a large ...
Nancy Narang, Cis Verbeeck, Marilena Mierla, David Berghmans, Frédéric Auchère, Sergei Shestov, Véronique Delouille, Lakshmi Pradeep Chitta, Eric Priest, Daye Lim, Laurent R. Dolla, Emil Kraaikamp   +11 more
openaire   +2 more sources

Turbulent convection as a significant hidden provider of magnetic helicity in solar eruptions. [PDF]

Sci Rep, 2023
Toriumi S, Hotta H, Kusano K.
europepmc   +1 more source

Evidence for small-scale torsional Alfvén waves in the solar corona. [PDF]

Nat Astron
Morton RJ, Gao Y, Tajfirouze E, Tian H, Van Doorsselaere T, Schad TA.   +5 more
europepmc   +1 more source

Searching for a Solar Source of Magnetic-Field Switchbacks in Parker Solar Probe's First Encounter. [PDF]

Sol Phys, 2022
de Pablos D, Samanta T, Badman ST, Schwanitz C, Bahauddin SM, Harra LK, Petrie G, Mac Cormack C, Mac Cormack C, Mandrini CH, Raouafi NE, Martinez Pillet V, Velli M.   +12 more
europepmc   +1 more source

Spectroscopic Analysis and RHD Modeling of the First Ca II H and H ϵ Flare Spectra from DKIST/ViSP. [PDF]

Sol Phys
Tamburri C, Kowalski A, Cauzzi G, Kazachenko M, Tritschler A, Yadav R, French R, Notsu Y, Reardon K, Tristan I.   +9 more
europepmc   +1 more source