Results 71 to 80 of about 111 (106)

The Darkest Regions of Solar Polar Coronal Holes Observed by SUMER on SOHO

Astrophysics and Space Science, 1998
The plasma conditions above solar coronal holes are of considerable interest, because it is well established that the high-speed solar wind streams originate in these regions (see, e.g., Krieger et al., 1973; Geiss et al., 1995a; Woch et al., 1997), and the acceleration processes of the fast solar wind thus can be studied there.
openaire   +2 more sources

First Results of Tide SUMER Telescope and Spectrometer on SOHO

1997
SUMER — the Solar Ultraviolet Measurements of the Emitted Radiation instrument on the Solar and Reliospheric Observatory (SORO) — observed its first light on January 24, 1996, and subsequently obtained a detailed spectrum with detector B in the wavelength range from 660 to 1490 A (in first order) inside and above the limb in the north polar coronal ...
K. Wilhelm, P. Lemaire, W. Curdt, U. Schühle, E. Marsch, A. I. Poland, S. D. Jordan, R. J. Thomas, D. M. Hassler, M. C. E. Huber, J-.C. Vial, M. Kühne, O. H. W. Siegmund, A. Gabriel, J. G. Timothy, M. Grewing, U. Feldman, J. Hollandt, P. Brekke   +18 more
openaire   +1 more source

Intercalibration of SUMER and CDS on SOHO. III. SUMER and CDS-GIS. Solar and Heliospheric Observatory.

Applied optics, 2003
Simultaneous observation of the same solar sources with different instruments is one way to test prelaunch radiometric calibrations and to detect changes in responsivity with time of extreme-ultraviolet instruments in space. Here we present the results of intercalibration of the SUMER (Solar Ultraviolet Measurements of Emitted Radiation) spectrometer ...
Anuschka, Pauluhn, Jim, Lang, Eddie R, Breeveld, Sami K, Solanki, Udo, Schühle   +4 more
openaire   +1 more source

Ion Temperatures in a Solar Polar Coronal Hole Observed by Sumer onSOHO

Astrophysical Journal, 1998
Chuanyi Tu, Eckart Marsch, W Curdt
exaly  

First Results of the SUMER Telescope and Spectrometer on SOHO

1997
P. Lemaire, K. Wilhelm, W. Curdt, U. Schüle, E. Marsch, A. I. Poland, S. D. Jordan, R. J. Thomas, D. M. Hassler, J. C. Vial, M. Kühne, M. C. E. Huber, O. H. W. Siegmund, A. Gabriel, J. G. Timothy, M. Grewing   +15 more
openaire   +1 more source

Electron Density Diagnostics for the Solar Upper Atmosphere from Spectra Obtained by SUMER/SOHO

Astrophysical Journal, 1997
Martin Laming, Udo Schühle
exaly  

Intercalibration of SUMER and CDS on SOHO II SUMER detectors A and B and CDS NIS: erratum

Applied Optics, 2002
Anuschka Pauluhn, Isabelle Rüedi, Sami K. Solanki, Udo Schühle, Klaus Wilhelm, Jim Lang, William T. Thompson, Jörg Hollandt, M. C. E. Huber   +8 more
openaire   +1 more source

Highlights of the SUMER observations on SOHO

1997
Wilhelm, K., the Consortium, S.
openaire   +1 more source

Comment résumer des données ?

2020
exaly   +4 more sources

SUMER Measurements of Nonthermal Motions: Constraints on Coronal Heating Mechanisms

Astrophysical Journal, 1998
Udo Schühle
exaly