Add to ORKGWe present a study of a high spatial resolution raster scan taken on-disk with the SoHO/SUMER spectrograph in a solar polar Coronal Hole (CH) region. We have anal-ysed the line shifts and widths of two EUV emitting ions, O iii 703.87 Å and Mg ix 706.02 Å. Our results confirm plasma outflows from CHs. In particular, the correlation between the intensity and the Doppler velocity in the case of the O iii line constitute the lowest precise indication of fast wind streams seen originating from the network boundaries in the transition region. Key words: Sun: EUV radiation; Doppler line-shifts; coronal holes; chromospheric network; fast solar wind. 1
We present an analysis of 14 ultraviolet emission lines belonging to different atoms and ions observ...
One of the keys to understand coronal heating is to understand the (magnetic) structure of the atmos...
12 Figures, Accepted for publication in ApJWe analyze data from the Solar and Heliospheric Observato...
Doppler-shift properties of the solar transition region (TR) and low corona are investigated in rela...
We present a study of a high spatial resolution raster acquired on-disk with the SUMER (Solar Ultra...
The heating of the solar corona and the origin and acceleration of the solar wind are among the impo...
We present an analysis of time series data acquired with the SUMER spectrograph on SoHO in coronal h...
We examine properties of line profiles as found with large raster scans of the solar corona acquired...
International audienceEstablishing the sources of the fast and slow solar wind is important for unde...
Using the correlation between the radiance or Doppler velocity and the extrapolated magnetic field, ...
Two decades ago it was discovered that emission lines from the solar transition region from the chro...
Intensity histograms of 14 EUV emission lines in a polar coronal hole, its equatorial extension, the...
Abstract. Coronal holes are the lowest density plasma components of the Sun’s outer atmosphere, and ...
A new spectroscopic method, aimed to derive the plasma electron density and outflow velocity in expa...
The north polar coronal hole and the wind originating from it have been the target of a week--long o...
We present an analysis of 14 ultraviolet emission lines belonging to different atoms and ions observ...
One of the keys to understand coronal heating is to understand the (magnetic) structure of the atmos...
12 Figures, Accepted for publication in ApJWe analyze data from the Solar and Heliospheric Observato...
Doppler-shift properties of the solar transition region (TR) and low corona are investigated in rela...
We present a study of a high spatial resolution raster acquired on-disk with the SUMER (Solar Ultra...
The heating of the solar corona and the origin and acceleration of the solar wind are among the impo...
We present an analysis of time series data acquired with the SUMER spectrograph on SoHO in coronal h...
We examine properties of line profiles as found with large raster scans of the solar corona acquired...
International audienceEstablishing the sources of the fast and slow solar wind is important for unde...
Using the correlation between the radiance or Doppler velocity and the extrapolated magnetic field, ...
Two decades ago it was discovered that emission lines from the solar transition region from the chro...
Intensity histograms of 14 EUV emission lines in a polar coronal hole, its equatorial extension, the...
Abstract. Coronal holes are the lowest density plasma components of the Sun’s outer atmosphere, and ...
A new spectroscopic method, aimed to derive the plasma electron density and outflow velocity in expa...
The north polar coronal hole and the wind originating from it have been the target of a week--long o...
We present an analysis of 14 ultraviolet emission lines belonging to different atoms and ions observ...
One of the keys to understand coronal heating is to understand the (magnetic) structure of the atmos...
12 Figures, Accepted for publication in ApJWe analyze data from the Solar and Heliospheric Observato...