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Mostrando ítems 11-20 de 3614
Stellar cycles from photometric data: CoRoT stars
(EDP Sciences, 2015)
Newly discovered global temperature structures in the quiet sun at solar minimum
(IOP Publishing, 2012-08)
Magnetic loops are building blocks of the closed-field corona. While active region loops are readily seen in images taken at EUV and X-ray wavelengths, quiet-Sun (QS) loops are seldom identifiable and are therefore difficult ...
A study of the long term evolution in active region upflows
(Astronomical Soc Japan, 2017-06)
Since their discovery, upflows at the edges of active regions have attracted a lot of interest, primarily as they could potentially contribute to the slow solar wind. One aspect that has not been studied yet is how the ...
Submillimeter and X-ray observations of an X class flare
(Edp Sciences S ALes Ulis Cedex AFrança, 2009)
Small-scale and Global Dynamos and the Area and Flux Distributions of Active Regions, Sunspot Groups, and Sunspots: A Multi-database Study
(IOP Publishing, 2015-01)
In this work we take advantage of eleven different sunspot group, sunspot, and active region databases to characterize the area and flux distributions of photospheric magnetic structures. We find that, when taken separately, ...
Magnetic reconnection along quasi-separatrix layers as a drivers of ubiquitous active region outflows
(IOP Publishing, 2009-11)
Hinode´s EUV Imaging Spectrometer (EIS) has discovered ubiquitous outflows of a few to 50 km s<sup>-1</sup> from active regions (ARs). These outflows are most prominent at the AR boundary and appear over monopolar magnetic ...
The solar plasma conditions in the source regions of two explosive events
(Astronomy and Astrophysics, 2009)
Estimating the mass of CMEs from the analysis of EUV dimmings
(EDP Sciences, 2019-07)
Context. Reliable estimates of the mass of coronal mass ejections (CMEs) are required to quantify their energy and predict how they affect space weather. When a CME propagates near the observer's line of sight, these tasks ...
Parallel evolution of quasi-separatrix layers and active region upflows
(Iop Publishing, 2015-08-10)
Persistent plasma upflows were observed with Hinode?s EUV Imaging Spectrometer (EIS) at the edges of active region (AR) 10978 as it crossed the solar disk. We analyze the evolution of the photospheric magnetic and velocity ...
The solar plasma conditions in the source regions of two explosive events
(Astronomy and Astrophysics, 2009)