Interpretation of results in terms of physical models

  • Brian Harold May


In this chapter, I present the fully compensated averaged scans obtained in the two observing periods, 1971 and 1972, for all observed elongations, each with a fitted Gaussian curve, except as noted. From parameters derived from these fits, plots of average wavelength shift, line width and line depth against elongation are constructed. These observations, the Hicks, May and Reay (HMR) data, are compared with previous and all subsequent observations since 1974, and examined with reference to the predictions of various models. The models are based on various distributions of dust moving in prograde and retrograde solar orbits, and a new model is presented of interstellar material flowing through the Solar System. A geocentric component, and the effects of distant emitting matter are also considered. New theoretical models by various authors since 1974 are examined and compared with the data. Theories are advanced as to why there might be seasonal variations in the radial velocities measured in the Zodiacal Cloud (ZC).


Solar System Radial Velocity Dust Particle Radiation Pressure Physical Data 
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Copyright information

© Brian May 2007

Authors and Affiliations

  • Brian Harold May
    • 1
  1. 1.Astrophysics Group Department of PhysicsImperial CollegeLondonUK

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