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Extreme ultraviolet observations of the solar corona: first results from the coronal diagnostic spectrometer on SOHO

Mason, H. E.; Harrison, R. A.; Culhane, J. L. +9 more

We present first results from the Coronal Diagnostic Spectrometer (CDS) aboard the ESA/NASA Solar and Heliospheric Observatory (SOHO). CDS is a double spectrometer operating in the 151-785 A˚ range. This region of the solar spectrum is rich in emission lines from trace elements in the solar atmosphere, which can be used to derive diagnostic inform…

On an improved geostationary catalog

Sochilina, A. S.; Kiladze, R. I.; Grigoriev, K. V. +1 more

In the previous geostationary catalog 1994 a possibility to calculate the evolution of orbital data with the aid of the initial improved orbits for a long-term interval was shown. This catalog was used for the identification of 12 000 photographic observations and for the ephemeris prediction. The new catalog of improved orbits is based on a more …

Observational signatures of nanoflare heated solar stellar coronae

Judge, P. G.; Hansteen, V. H.; Wikstøl, Ø.

Using time-dependent dynamical models of the radiating gas in coronal flux tubes, we identify features in UV spectral line profiles that can reveal the direction in which energy flows through the solar transition region, in observations without temporal or spatial resolution. The profile features survive spatial and temporal averaging through non-…

IACG Campaign III: solar events and their manifestation in interplanetary space and in geospace

Harrison, R. A.

In Spring 1994 the Inter Agency Consultative Group Campaign III was set up at a kick-off meeting in Sagamihara, Japan. The basic idea of Campaign III was to coordinate solar, interplanetary and near-Earth spacecraft in an effort to link solar and near-Earth observations relating to activity such as solar mass ejections, and features such as co-rot…

South-north and radial traverses through the zodiacal cloud.

Srama, R.; Grün, E.; Kissel, J. +17 more

The heliosphere at solar minimum and beyond. Proceedings. D0.2 Symposium of COSPAR Scientific Commission D which was held during the Thirty-first COSPAR Scientific Assembly, Birmingham (UK), 14 - 21 Jul 1996.

Marsden, R. G.; Page, D. E.

The following topics were dealt with: the main findings in Ulysses' exploration of high solar latitudes, modulation of the cosmic radiation, anomalous cosmic rays, the heliospheric boundary and direct detection of neutral helium from interstellar space.

On-line access to the heliospheric measurements at high latitudes using the ESA archive for ULYSSES data

Sanderson, T. R.; Marsden, R. G.; Tranquille, C.

Ulysses is currently making its second orbit of the Sun, having successfully provided unique and continuous measurements of heliospheric particles and fields as a function of heliographic latitude during its first passes of the solar polar regions. The new measurements will give an insight into the dynamics of the heliosphere at solar maximum, in …

Gradients and flows in Jupiter's magnetosphere determined from the anisotropies of ~1 MeV protons

Balogh, A.; Forsyth, R. J.; Dunlop, M. W. +4 more

For near-isotropic distributions of energetic ions, the field-perpendicular first order anisotropies which occur are due both to plasma flows transverse to B, and to field-perpendicular spatial gradients in the ion flux. A technique has been developed to separate these by examining the variation of the anisotropy with ion energy. This has been app…

The discovery of 8.7 S pulsations from the ultrasoft X-ray source 4U0142+61

Mereghetti, S.; Stella, L.; Israel, G. L.

We discovered a periodicity at ~8.7 s from the X-ray sources 4U0142+61, previously considered a possible black hole candidate on the basis of its ultrasoft spectrum. The pulsations are visible only in the 1-4 keV energy range, during an observation obtained with the EXOSAT satellite in August 1984. In the same data, periodic oscillations at 25 min…

The Sun and its role in the heliosphere. Proceedings. E2.2 Symposium of COSPAR Scientific Commission E held during the Thirty-first COSPAR Scientific Assembly, Birmingham (UK), 14 - 21 Jul 1996.

Antonucci, E.; Page, D. E.

The following topics were dealt with: solar corona, solar wind, structure, composition and variations, solar wind plasma, Ulysses measurements, heliospheric magnetic fields, interplanetary medium, interplanetary plasma and shocks, and energetic particle fluxes.