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Density of neutral interstellar hydrogen at the termination shock from Ulysses pickup ion observations

Möbius, E.; Bzowski, M.; Gloeckler, G. +2 more

Aims: By reevaluating a 13-month stretch of Ulysses SWICS H pickup ion measurements near 5 AU close to the ecliptic right after the previous solar minimum, this paper presents a determination of the neutral interstellar H density at the solar wind termination shock and implications for the density and ionization degree of hydrogen in the local int…

Determining the LIC H density from the solar wind slowdown

Liu, Y.; McComas, D. J.; Wang, C. +1 more

Context: The ionized solar wind interacts directly with the interstellar neutrals which flow into the heliosphere. These neutrals are ionized, mainly by charge exchange, then accelerated to the solar wind speed with the momentum and energy removed from the bulk flow of the solar wind. Thus, by measuring the solar wind slowdown, one can estimate th…

The directivity of solar type III bursts at hectometer and kilometer wavelengths: Wind-Ulysses observations

Maksimovic, M.; Bonnin, X.; Hoang, S.

We investigate the directivity of solar type III radio bursts at hectometer and kilometer wavelengths using radio data recorded simultaneously by the Wind and Ulysses spacecraft which are widely separated in heliocentric longitude and latitude. From the positions of the associated flares and the solar wind speed and plasma density measured aboard …

UV optical measurements of the Nozomi spacecraft interpreted with a two-component LIC-flow model

Bzowski, M.; Yoshikawa, I.; Takahashi, Y. +7 more

Aims: Following recent reports on spectroscopic observations by SWAN/SOHO suggesting that the flows of neutral interstellar helium and hydrogen in the inner heliosphere are slightly divergent, we tried to verify them on the basis of simultaneous photometric observations of heliospheric hydrogen and helium glows performed by a spacecraft located on…

Are there Kronian electrons in the inner heliosphere?

Fichtner, H.; Lange, D.

Context: As the largest in our solar system the Jovian magnetosphere is treated in the literature as the dominant source of a few-MeV electrons, which have been measured by various spacecraft. In particular, observations obtained with Ulysses have significantly broadened the available data base.
Aims: We simulated the transports of MeV electro…