Search Publications
Low frequency plasma waves in the solar wind: from ecliptic plane to the solar polar regions
Balogh, A.; Forsyth, R. J.; Lin, Naiguo +4 more
<B>Traveling from the ecliptic to the solar polar regions, Ulysses observed wave activity below the local electron cyclotron frequency, f_ce. In regions near the heliospheric current sheet (hereafter HCS regions), two wave modes are observed: (1) whistler mode electromagnetic waves near interplanetary shocks and during periods of rapidly inc…
Energetic particle anisotropies and remote magnetic connection at high solar latitudes
Fränz, M.; Keppler, E.; Burgess, D. +2 more
A very stable pattern of energetic particle events recurring with the solar rotation period dominates the Ulysses high latitude energetic particle observations during the current solar minimum. Most of these events can be associated with reverse shocks of corotating interaction regions (CIRs) but at latitudes above 50 deg there are either no shock…
Interplanetary variability in particle fluxes recorded by the low energy charged particle detector lion (40 KEV-6 MEV) on the soho spacecraft during its cruise phase to the L1 point
Kunow, H.; Muller-Mellin, R.; McKenna-Lawlor, Susan M. P. +6 more
Representative types of energetic particle phenomena recorded by the LION instrument on SOHO during its Transfer Phase to, and while in early Halo Orbit about, the L1 Lagrangian Point are presented. The data cover the period from 7 December 1995 (instrument switch on) until 9/10 July 1996 (when a particle event associated with the first Class X fl…
Diamagnetic effect of the ion pile-up region of comet halley
Neubauer, F. M.; Israelevich, P. L.; Ershkovich, A. I.
The ion pile-up region in the comet Halley ionosphere observed on the inbound leg of the Giotto trajectory is accompanied by a decrease of the magnetic field strength. This magnetic field dip is explained by means of a diamagnetic effect of the plasma density increase in the pile-up region. No similar magnetic effect of the enhanced plasma density…
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.