Results 31 to 40 of about 14,687 (203)

Coronal global EIT waves as tools for multiple diagnostics [PDF]

, 2007
Observations in EUV lines of the solar corona revealed large scale propagating waves generated by eruptive events able to travel across the solar disk for large distances. In the low corona, CMEs are known to generate, e.g. EIT waves which can be used to
I. Ballai, M. Douglas, Nowak
core   +1 more source

Can the Solar Wind be Driven by Magnetic Reconnection in the Sun's Magnetic Carpet? [PDF]

, 2010
The physical processes that heat the solar corona and accelerate the solar wind remain unknown after many years of study. Some have suggested that the wind is driven by waves and turbulence in open magnetic flux tubes, and others have suggested that ...
Adriaan A. van Ballegooijen, Amari, Antiochos, Antiochos, Aschwanden, Axford, Baker, Banaszkiewicz, Berger, Beveridge, Bruno, Bryans, Buchlin, Cadavid, Cairns, Camporeale, Cranmer, Cranmer, Cranmer, Cranmer, Crouch, De Pontieu, De Rosa, Edmondson, Edmondson, Fang, Feldman, Fisk, Giacalone, Goldbaum, Gudiksen, Guglielmino, Hagenaar, Hagenaar, Hagenaar, Hagenaar, Hagenaar, Hansteen, Harra, Hollweg, Isobe, Ito, Jiang, Keller, Kubo, Lionello, Lites, Livi, Longcope, Longcope, Lynch, Lynch, Martínez González, Matsumoto, Matthaeus, Moreno-Insertis, Morita, Nicol, Pariat, Parnell, Peter, Press, Priest, Pucci, Rast, Regnier, Rieutord, Savcheva, Schrijver, Schrijver, Schrijver, Schwadron, Scullion, Shibata, Shimojo, Shimojo, Shimojo, Simon, Simon, Stein, Steven R. Cranmer, Sánchez Almeida, Title, van Ballegooijen, van Ballegooijen, Verdini, Wang, Wang, Wang, Welsch, Yeates, Zhang   +91 more
core   +1 more source

Probing the Quiet Solar Atmosphere from the Photosphere to the Corona [PDF]

Solar Physics, 2018
We investigate the morphology and temporal variability of a quiet Sun network region in different solar layers. The emission in several EUV spectral lines through both raster and slot time series, recorded by EIS/Hinode is studied along with H$ $ observations and high resolution spectropolarimetric observations of the photospheric magnetic field.
Ioannis Kontogiannis, Costis Gontikakis, Georgia Tsiropoula, Kostas Tziotziou   +3 more
openaire   +2 more sources

A nanoflare model of quiet Sun EUV emission [PDF]

, 2006
Nanoflares have been proposed as the main source of heating of the solar corona. However, detecting them directly has so far proved elusive, and extrapolating to them from the properties of larger brightenings gives unreliable estimates of the power-law ...
A. Pauluhn, Arzner, Aschwanden, Aschwanden, Audard, Brkovic, Datlowe, Güdel, Harrison, Innes, Krucker, Lin, Lu, Mitra-Kraev, Parker, Parnell, Pauluhn, Rosner, S. K. Solanki, Torrence, Vekstein, Wilhelm, Wilhelm, Winebarger, Withbroe   +24 more
core   +2 more sources

Study of Radio Transients from the Quiet Sun during an Extremely Quiet Time

The Astrophysical Journal, 2023
In this work, we study a class of recently discovered meter-wave solar transients referred to as Weak Impulsive Narrowband Quiet Sun Emission (WINQSEs).
Surajit Mondal, Divya Oberoi, Ayan Biswas   +2 more
doaj   +1 more source

First NuSTAR Limits on Quiet Sun Hard X-Ray Transient Events [PDF]

, 2017
We present the first results of a search for transient hard X-ray (HXR) emission in the quiet solar corona with the \textit{Nuclear Spectroscopic Telescope Array} (\textit{NuSTAR}) satellite. While \textit{NuSTAR} was designed as an astrophysics mission,
Boggs, Steven E., Caspi, Amir, Christensen, Finn E., Craig, William W., Glesener, Lindsay, Grefenstette, Brian W., Hailey, Charles J., Hannah, Iain G., Harrison, Fiona A., Hudson, Hugh S., Krucker, Säm, Kuhar, Matej, Madsen, Kristin K., Marsh, Andrew J., Smith, David M., Stern, Daniel, White, Stephen M., Wright, Paul J., Zhang, William W.   +18 more
core   +5 more sources

Radio impulsive events in quiet solar corona and Axion Quark Nugget Dark Matter [PDF]

Physical Review D, 2020
maths the published version (Phys. Rev. D). Additional comments on non- Poissonian clustering processes and on suppression of the impulsive radio events at low frequencies below 98 ...
Ge, Shuailiang, Siddiqui, Md Shahriar Rahim, Van Waerbeke, Ludovic, Zhitnitsky, Ariel   +3 more
openaire   +3 more sources

Link between the chromospheric network and magnetic structures of the corona [PDF]

, 2006
Recent work suggested that the traditional picture of the corona above the quiet Sun being rooted in the magnetic concentrations of the chromospheric network alone is strongly questionable.
Beck, Domínguez Cerdeña, Faurobert, Giovanelli, H. Peter, Lagg, Lin, Lin, Livingston, S. Jendersie, Scherrer, Schrijver, Schrijver, Socas-Navarro, Sánchez Almeida, Tu, Vögler, Xia   +17 more
core   +2 more sources

High-frequency Decayless Waves with Significant Energy in Solar Orbiter/EUI Observations

The Astrophysical Journal, 2023
High-frequency wave phenomena present a great deal of interest as one of the possible candidates to contribute to the energy input required to heat the corona as a part of the alternating current heating theory.
Elena Petrova, Norbert Magyar, Tom Van Doorsselaere, David Berghmans   +3 more
doaj   +1 more source

Correlation analysis of solar flux absolute measurements at 161 and 245 MHz

Solar-Terrestrial Physics, 2023
Solar emission in meter waves originates from upper layers of the solar corona. We present absolute measurements of solar flux from Irkutsk Incoherent Scatter Radar (161 MHz frequency) and Learmonth Observatory (245 MHz frequency). We perform correlation
Setov A. G., Kushnarev D. S.
doaj   +1 more source