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The SUMER spectral atlas of solar-disk features
A far-ultraviolet and extreme-ultraviolet (FUV, EUV) spectral atlas of the Sun between 670 Aa nd 1609 A in the rst order of diraction has been derived from observations obtained with the SUMER (SolarExpand
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SUMER — Solar Ultraviolet Measurements of Emitted Radiation
The instrument SUMER — Solar Ultraviolet Measurements of Emitted Radiation is designed to investigate structures and associated dynamical processes occurring in the solar atmosphere, from theExpand
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Bi-directional plasma jets produced by magnetic reconnection on the Sun
Magnetic reconnection, the process by which magnetic lines of force break and rejoin into a lower-energy configuration, is considered to be the fundamental process by which magnetic energy isExpand
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Solar Wind Origin in Coronal Funnels
The origin of the solar wind in solar coronal holes has long been unclear. We establish that the solar wind starts flowing out of the corona at heights above the photosphere between 5 megameters andExpand
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The corona above polar coronal holes as seen by SUMER on SOHO
In order to address two of the principal scientific objectives of the Solar and Heliospheric Observatory (SOHO), studies of the heating mechanisms of the solar corona and the acceleration processesExpand
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FIRST RESULTS OF THE SUMER TELESCOPE AND SPECTROMETER ON SOHO – II. Imagery and Data Management
SUMER – Solar Ultraviolet Measurements of Emitted Radiation – is not only an extreme ultraviolet (EUV) spectrometer capable of obtaining detailed spectra in the range from 500 to 1610 Å, but, usingExpand
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ION TEMPERATURES IN A SOLAR POLAR CORONAL HOLE OBSERVED BY SUMER ON SOHO
The temperatures of some highly charged ions in the southern solar polar coronal hole are determined from the widths of the extreme ultraviolet (EUV) lines measured by the SUMER (Solar UltravioletExpand
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Properties of quiet-sun coronal plasmas at distances of 1.03 lt;= RS lt;= 1.50 along the solar equatorial plane
We determine the physical properties, i.e., electron temperature, density, line-of-sight emission measure, and element-abundance variation with height, in the Sun's equatorial west limb streamerExpand
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Broadening of Si VIII lines observed in the solar polar coronal holes
We study the variation of the line width and electron density as a function of height above two coronal holes from forbidden spectral lines of Si viii. The spectra were obtained with the SolarExpand
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First Halley Multicolour Camera imaging results from Giotto
The first imaging results from the Halley Multicolour Camera (HMC) during the Giotto fly-by of comet Halley provide images centred on the brightest part of the inner coma which show the silhouette ofExpand
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