Lyman-alpha observations as a possible means for the detection of the heliospheric interface

Details Lyman-alpha observations as a possible means for the detection of the heliospheric interface Lyman-alpha observations as a possible means for the detection of the heliospheric interface

Sep 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993jgr....9815199q&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 98, no. A9, p. 15,199-15,210.

Statistics

Computation

14

Flow Velocity, Heliosphere, Interstellar Matter, Magnetohydrodynamic Flow, Plasma-Particle Interactions, Helium, Hydrogen, Interfaces, Lyman Alpha Radiation, Mathematical Models

Scientific paper

Monte Carlo modeling of the heliospheric interface pertubation indicates that the Lyman-alpha line profile varies in a different way from upwind to downwind direction, irrespective of the presence of a heliopause perturbation. Because some interaction models predict an H-density decrease at heliopause crossing along the wind, computations are conducted of the slope of the radial antisolar Lyman-alpha intensity between 15 and 50 AU, characterized by the variable 'gamma', for various models of H density. The use of Lyman-alpha intensity maps recorded at larger, 30-50 AU distances is also considered.

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