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The SUMER spectral atlas of solar-disk features
- W. Curdt, P. Brekke, P. Lemaire
- Physics
- 1 August 2001
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 (Solar…
Bi-directional plasma jets produced by magnetic reconnection on the Sun
- D. Innes, B. Inhester, W. I. Axford, K. Wilhelm
- PhysicsNature
- 1 April 1997
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 is…
SUMER - Solar Ultraviolet Measurements of Emitted Radiation
- K. Wilhelm, W. Curdt, O. Siegmund
- PhysicsSUMER Solar Ultraviolet Measurements of Emitted…
- 1 November 1988
The instrument SUMER - Solar Ultraviolet Measurements of Emitted Radiation is designed to investigate structures and associated dynamical processes occurring in the solar atmosphere, from the…
The corona above polar coronal holes as seen by SUMER on SOHO
- K. Wilhelm, E. Marsch, M. Huber
- Physics
- 20 June 1998
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 processes…
Solar Wind Origin in Coronal Funnels
- C. Tu, Cheng Zhou, K. Wilhelm
- PhysicsScience
- 22 April 2005
TLDR
FIRST RESULTS OF THE SUMER TELESCOPE AND SPECTROMETER ON SOHO – II. Imagery and Data Management
- P. Lemaire, K. Wilhelm, M. Grewing
- Physics
- 1997
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, using…
ION TEMPERATURES IN A SOLAR POLAR CORONAL HOLE OBSERVED BY SUMER ON SOHO
- C. Tu, E. Marsch, K. Wilhelm, W. Curdt
- Physics
- 10 August 1998
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 Ultraviolet…
Properties of quiet-sun coronal plasmas at distances of 1.03 lt;= RS lt;= 1.50 along the solar equatorial plane
- U. Feldman, G. Doschek, U. Schühle, K. Wilhelm
- Physics
- 10 June 1999
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 streamer…
First results of the SUMER telescope and spectrometer-solar ultraviolet measurements of emitted radiation-on SOHO, I. Spectra and Spectroradiometry
- K. Wilhelm, P. Lemaire, P. Brekke
- Physics
- 1997
SUMER – the Solar Ultraviolet Measurements of the Emitted Radiation instrument on the Solar and Heliospheric Observatory (SOHO) – observed its first light on January 24, 1996, and subsequently…
Doppler Shifts in the Quiet-Sun Transition Region and Corona Observed with Sumer on Soho
- P. Brekke, D. Hassler, K. Wilhelm
- Physics
- 1 October 1997
New observations of systematic red shifts of transition region and coronal lines obtained with SUMER (Solar Ultraviolet Measurements of Emitted Radiation) on SOHO (the Solar and Heliospheric…
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