Physics
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998phla..250...67z&link_type=abstract
Physics Letters A, Volume 250, Issue 1-3, p. 67-74.
Physics
7
Microlensing, Dark Matter, Nonbaryonic Dark Matter, Gravitational Lenses
Scientific paper
Recently Belokurov and Sazhin considered polarization curves during microlensing for non-compact objects. They concluded that the polarization curves for compact and non-compact objects demonstrated very distinguishable shapes, but light curves had similar shapes for compact and non-compact objects in those cases. We analyse their samples and show that the polarization curves coincided for compact and non-compact objects because the radii of non-compact objects are much smaller than the Einstein-Chwolson radius. If the radii of non-compact objects are much greater than the Einstein-Chwolson radius, then the differences between the polarization curves for compact and non-compact objects are connected with the singularity (degeneracy) of the isothermal sphere model, since the differences disappear in the framework of the non-singular isothermal sphere model.
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