title: Observations and simulations of some divergent-light halos.
abstract: We deal with some halos generated by the divergent light from a nearby source. After discussing how the divergent light transforms some halo features, we give an outline of a method of handling the simulation of a divergent-light halo. The simulation method is then successfully tested on some well-documented halo observations. We also present a "simulation atlas" that shows halos produced by crystals of different shapes and for different light-source elevations and distances between the observer and the light source. The simulation method also admits a three-dimensional visualization ofthe phenomena.
authors.affiliation: Department of Theoretical Physics, Lund University, Sweden. larsg@thep.lu.se
authors.forename: Lars
authors.initials: L
authors.lastname: Gislén
authors.forename: Jan O
authors.initials: JO
authors.lastname: Mattsson