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Comparison of the GPM proper motions with the data from modern astrometric catalogues

Rybka, S. P.

Proper motions, positions, B, V magnitudes and (B-V) colors from the GPM catalogue were compared with those from the Lick NPM1, the Carlsberg CMC, and the ESA "Tycho-2" catalogues. It turned out that the systematic differences of proper motions were in the range from 2 to 4 mas/yr. The external data also proved that the accuracy of the GPM proper …

Correction to “Ion isotropy and ion resonant waves in the solar wind: Cassini observations”

Gurnett, Donald A.; Kellogg, Paul J.; Kurth, William S. +1 more

New version of the latitude set derived from observations with a prismatic astrolabe in Poltava

Khalyavina, L. Ya.; Kislitsa, K. M.; Borisyuk, T. Ye. +1 more

The latitude set derived from observations with the prismatic astrolabe in Poltava during 37 years (1964.5--2000.9) is revised in order to improve the reliability and validity of the observation results. To this purpose the accurate coordinates of the HIPPARCOS catalogue are used, and the method is applied which takes into account the instrumental…

A Stabilized 100-Megahertz and 1-Gigahertz Reference Frequency Distribution for Cassini Radio Science

Calhoun, M.; Sydnor, R.; Diener, W.

The development of the stabilized fiber-optic distribution assembly (SFODA) is reported. The system was developed to enable gravitational wave searches and atmospheric occultation experiments between the Cassini spacecraft and the NASA Deep Space Network. These experiments are conducted at 32-GHz (Ka-band) frequencies and demand the highest possib…

Space science and exploration in the 21st century

Bonnet, R. M.

Available from http://www.copernicus.org/EGU/annales/19/1201.htm;

Fine Structure in the Corona at High Latitudes at Solar Maximum

Suess, S.

Microstreams and pressure balance structures in fast solar wind were more easily detected at Ulysses at 2.2 AU over the poles than at Helios at 0.3 AU. This is because solar rotation leads to dynamic interactions between different speed regimes at a rate that depends on latitude for the same size features. Dynamic interactions make structures more…

Determination of the magnetic loop configuration of a solar flare

Sakurai, T.; Hanaoka, Y.

Observationally derived three-dimensional magnetic loop structures of solar flares tell us what type of magnetic configurations is actually responsible for the reconnection/energy release in solar flares. So far, the loop configuration has been discussed on a rather schematic basis, because of insufficient data coverage. However, now we have data …

Energetic Ions Observed at Low to High Latitudes in the Southern Heliosphere During Declining and Rising Solar Activity

Forsyth, R. J.; Goldstein, B. E.; Sanderson, T. R. +3 more

We present and compare observations of energetic protons during the two first transits of the Ulysses spacecraft from low to high latitudes in the southern heliosphere. Protons in the energy range 1.8 3.8 MeV from the COSPIN experiment are studied for global trends and in relation to some ambient structures in the solar wind (corotating interactio…

The Secret Inner Life of the Orion Nebula

Schultz, A. S. B.

Beneath the familiar surface of the Orion Nebula is a spectacular molecular hydrogen outflow from a young stellar object, of very unusual morphology. In this paper I briefly discuss this outflow, its possible origins, and its interaction with the Nebula.

Small scale structures of the heliospheric magnetic field and the propagation of cosmic rays

Balogh, A.; Nemeth, Z.; Erdos, G.

The heliospheric magnetic field is rich in highly fragmented small-scale structures. The magnetic background strongly influences the motion of the charged particles of relatively low rigidity. Using high time resolution magnetic field data measured by the magnetometer onboard Ulysses, we study the small-scale magnetic structures, including fractal…