3 papers
astro-ph1998
The Paradox of the Scale-Free Disks
Jeremy Goodman, Wyn Evans
Scale-free disks have no preferred length or time scale. The question has been raised whether such disks have a continuum of unstable linear modes or perhaps no unstable modes at a…
astro-ph1997
Lens Models with Density Cusps
Wyn Evans, Mark Wilkinson
Lens models appropriate for representing cusped galaxies and clusters are developed. The analogue of the odd number theorem for cusped density distributions is given. Density cusps…
astro-ph1996
Microlensing, or Galactic Twinkling
Wyn Evans
Microlensing has established itself as a powerful new method for the detection of baryonic dark matter in the Galaxy. The theory of microlensing is sketched and its similarity with…