Mathematics – Probability
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.4701s&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #47.01; Bulletin of the American Astronomical Society, Vol. 34, p.1177
Mathematics
Probability
Scientific paper
The solar wind modulates the low-energy galactic cosmic ray flux in our solar system, but this modulation depends on the size and other properties of the heliosphere and the details of cosmic ray propagation. It has been repeatedly suggested that the cosmic ray flux on Earth, and presumably other habitable planets, should be greatly enhanced when the solar system passes through denser regions of the interstellar medium, but the importance of such events remains uncertain. We attempt to improve this situation using calculations of test planetary systems and their associated heliosphere analogues moving through a realistic continuous density and velocity field based on 3-dimensional hydrodynamical simulations representing the interstellar medium. Using simplified approximations for the dependence of heliosphere size on external density and relative velocity and for the dependence of cosmic ray modulation on heliosphere size and distance from the parent star, we follow the time series of cosmic ray fluxes at various distances from the parent star. From ensembles of these test particle time series' we estimate the probability distribution of cosmic ray fluxes and associated durations for a variety of model planetary systems. Implications for long-term fluctuations in planetary mutation rates and atmospheric chemistry are briefly discussed.
Scalo John
Smith Douglas
Vázquez-Semadeni Enrique
No associations
LandOfFree
Statistics of Galactic Cosmic Ray Modulation Variations Using Simulations of the Turbulent Interstellar Medium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Statistics of Galactic Cosmic Ray Modulation Variations Using Simulations of the Turbulent Interstellar Medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Statistics of Galactic Cosmic Ray Modulation Variations Using Simulations of the Turbulent Interstellar Medium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1890080