Other
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...392..272r&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 392, no. 1, June 10, 1992, p. 272-276.
Other
14
Cosmic Rays, Heliosphere, Hydrogen, Interplanetary Medium, Spectrum Analysis, Astronomical Models, Cosmochemistry, Interstellar Matter, Pioneer 10 Space Probe, Radiation Distribution, Voyager 2 Spacecraft
Scientific paper
It is shown that the bulge observed in the 1987 Voyager 2 hydrogen spectrum, relative to the spectrum measured in 1985, can be explained naturally as a simple modulation phenomenon, as well as by the detection of anomalous hydrogen, as was the case in the past. The bulging increases with increasing radial distance, and with decreasing strength of modulation. The fundamental reason for this effect is the subtle change of the convective adiabatic limit of the modulation with radial distance and with modulation strength. At radial distances in excess of approximately 40 AU, adiabatic losses become small enough for an anomalous hydrogen component to be detectable. The results have an important bearing on the calculation of the intensities of the anomalous components of other species, like He, N, O, Ne, and Ar.
Moraal Harm
Reinecke P. L. J.
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