Results 81 to 90 of about 429,319 (205)

Inference of the physical parameters of Hα-absorbing plasma structures in the quiet Sun

Astronomy & Astrophysics
On-disk Hα light-absorbing plasma structures such as mottles, fibrils, filaments, and Hα jets are observable magnetohydrodynamic features in the upper solar chromosphere.
Chae Jongchul, Kang Juhyung, Lee Kyoung-Sun, Lim Eun-Kyung, Madjarska Maria S., Kwak Hannah   +5 more
doaj   +1 more source

Long-lived particles and the quiet Sun

Physical Review D
The nuclear reaction network within the interior of the Sun is an efficient MeV physics factory and can produce long-lived particles generic to dark sector models. In this work we consider the sensitivity of satellite instruments, primarily the RHESSI spectrometer, that observe the quiet Sun in the MeV regime where backgrounds are low.
R. Andrew Gustafson, Ryan Plestid, Ian M. Shoemaker, Albert Zhou   +3 more
openaire   +5 more sources

Magnetic Coupling in the Quiet Solar Atmosphere

, 2009
Three kinds of magnetic couplings in the quiet solar atmosphere are highlighted and discussed, all fundamentally connected to the Lorentz force. First the coupling of the convecting and overshooting fluid in the surface layers of the Sun with the ...
A Tritschler, A Vögler, AG Wijn de, AI Shapiro, B Bovelet, B Pontieu De, BW Lites, BW Lites, BW Lites, BW Lites, BW Lites, CS Rosenthal, CU Keller, D Orozco Suárez, DJ Galloway, E Khomenko, E Khomenko, E Khomenko, E Wiehr, H Frisch, H Moradi, H Socas-Navarro, HC Spruit, I Domínguez Cerdeña, I Domínguez Cerdeña, J Hirzberger, J Sánchez Almeida, J Sánchez Almeida, JH Thomas, JO Stenflo, JO Stenflo, JP Mehltretter, JW Harvey, K Langhans, K Shibata, LHM Rouppe van der Voort, M Carlsson, M Faurobert, M Faurobert, M Faurobert-Scholl, M Faurobert-Scholl, M Fligge, M Sampoorna, M Schüssler, MJ Martínez González, N Bello González, N Bello González, N Bello González, N Meunier, NA Krivova, NO Weiss, O Steiner, O Steiner, O Steiner, O Steiner, O Steiner, P Foukal, PS Cally, PS Cally, PS Cally, R Centeno, R Ishikawa, R Ishikawa, R Muller, R Rezaei, R Rezaei, RB Dunn, RJ Rutten, RJ Rutten, S Shelyag, S Wedemeyer, S Wedemeyer-Böhm, SM Jefferies, SS Hasan, SS Hasan, SV Berdyugina, T Kosugi, T Wenzler, TA Carroll, TE Berger, TJ Bogdan, U Grossmann-Doerth, V Bommier, W Finsterle, WP Abbett, YD Zhugzhda, YD Zhugzhda, YD Zhugzhda, YD Zhugzhda, Ø Langangen   +89 more
core   +2 more sources

Features of correlation curves of the Siberian Radioheliograph

Solar-Terrestrial Physics
Correlation curves of the multi-frequency Siberian Radioheliograph (SRH) provide a sensitive indication and demonstrative representation of monitoring the microwave life of the active Sun.
Uralov Arkadiy, Lesovoi Sergey, Grechnev Victor, Globa Mariia   +3 more
doaj   +1 more source

Turbulent Suppression of Alfvénic Wave Resonances in Coronal Loops

The Astrophysical Journal
Alfvénic wave turbulence is a leading mechanism for explaining the heating of the solar corona and the acceleration of the solar wind. Alfvénic waves are observed to be prevalent throughout the inner corona.
Edris Tajfirouze, Richard Morton, Mahboubeh Asgari-Targhi   +2 more
doaj   +1 more source

Quiet Sun Explosive Events: Jets, Splashes, and Eruptions

, 2012
Explosive events are small transition region phenomena characterised by broad non-Gaussian wings in their line profiles. Images from the Solar Dynamics Observatory (SDO) give a first view of the plasma dynamics at the sites of explosive events seen in O ...
Innes, Davina, Teriaca, Luca
core   +1 more source

Hydrogen Lyman-alpha and Lyman-beta radiances and profiles in polar coronal holes

, 2009
The hydrogen Lyman-alpha plays a dominant role in the radiative energy transport in the lower transition region, and is important for the stud- ies of transition-region structure as well as solar wind origin. We investigate the Ly-alpha profiles obtained
Dammasch, Esser, Fontenla, Hui Tian, Jean-Claude Vial, Luca Teriaca, Teriaca, Teriaca, Teriaca, Tian, Warren, Werner Curdt, Xia   +12 more
core   +1 more source

Investigation of the D and E region during the IQSY Final report, 1964 - 1965 [PDF]

Nike-Apache rocket measurements of lower ionosphere during International Quiet Sun ...
Mc Kinnon, P. J., Smith, L. G., Weeks, L. H.   +2 more
core   +1 more source

Magnetic flux in the inter-network quiet Sun from comparison with numerical simulations

, 2005
Khomenko et al. estimate the mean magnetic field strength of the quiet Sun to be 20 G. The figure is smaller than several existing estimates, and it comes from the comparison between observed Zeeman polarization signals and synthetic signals from ...
Boldyrev, Bommier, Brandenburg, Domínguez Cerdeña, Domínguez Cerdeña, Faurobert, J. Sánchez Almeida, Khomenko, Kovitya, Maron, Nordlund, Sánchez Almeida, Trujillo Bueno, Vögler   +13 more
core   +1 more source

(Inter-)network structure and dynamics [PDF]

, 1999
The dynamical nature of the low solar atmosphere outside active regions is emphasized by recent observations an simulations alike. La Palma images,MDI maps,SUMER spectra,TRACE movies,hydro- dynamic shock simulations and magnetohy rodynamic sheet ...
Rutten, R.J.
core