Search Publications
Specialized detector techniques and electronics of the ERNE instrument onboard SOHO
Valtonen, E.; Peltonen, J.; Eronen, T. +5 more
ERNE is designed to study the composition and energy spectra of particles encountered in interplanetary space in the energy range from 1 MeV/n to well beyond 500 MeV/n. Several innovative ideas had to be incorporated in the design of the instrument in order to fulfill the scientific requirements. Position-sensitive strip detectors are used in the …
R Coronae Borealis Stars, Dust, and Evolution
Clayton, Geoffrey C.
The ISO Spectrum of the Cloud Core M17-North
Henning, Th.; Klein, R.
Doppler receiver for Cassini radio science experiments
Comoretto, G.
The Ka band tracking capability of the Cassini spacecraft allows for greater accuracy in most Radio Science experiments, but can be used only with the Goldstone DSN complex, i.e. for one third of the total time. A digital receiver has been designed to allow receiving the Ka band signal from a generic VLBI antenna. The receiver interfaces with the …
Far-Infrared Photometry of Circumstellar Matter Around Intermediate Mass Stars
Burkert, A.; Ábrahám, P.; Henning, Th. +2 more
ISO Observations of Freshly Synthesized Supernova Material
Lagage, P. -O.
ISOCAM observations of Cassiopeia A (Cas A), the youngest supernova remnant known in our galaxy, are discussed. We show how these observations are of interest for the so-called Cas A Neon problem and how these observations have renewed the interest in supernovae as dust factories.
The shape of a sublimating ice surface at the bottom of a non-volatile cylinder: Monte Carlo simulations and 2-D analysis
Keller, H. U.; Markiewicz, W. J.; Skorov, Yu. V.
Gas flow rate at a cometary surface depends on the microscopic structure of the porous dust-ice material that makes up the nucleus. The standard model for the structure of such material is a bundle of cylindrical, non-crossing tubes. Even within this idealized model the emergent flux depends on the shape of the sublimating ice surface at the botto…
The Ulysses mission.
Smith, E. J.; Marsden, R. G.
Of the dozens of spacecraft sent to explore the solar system, only Ulysses has veered far from the ecliptic. Now looping over the sun's poles in an orbit as wide as Jupiter's, Ulysses has a unique view of the solar wind that is advancing stellar astrophysics.
AGB Stars and Supergiants in the Bar of the LMC
Omont, A.; Blommaert, J.; Loup, C. +2 more
Ulysses Finishes Its First Revolution Around the Sun
Keppler, Erhard
Results are presented of the Ulysses mission during its first orbit. There are new insights into the structure of the interplanetary magnetic field, the role of interstellar neutrals within the heliosphere, the acceleration of charged particles to very high energies in corotating interaction regions, the effect of these regions on the propagation …