We investigate several versions of the telescope conjecture on localized categories of
spectra and implications between them. Generalizing the “finite localization” construction,
we show that, on such categories, localizing away from a set of strongly dualizable
objects is smashing. We classify all smashing localizations on the harmonic category,
-local category
and
-local
category, where
is the Brown–Comenetz dual of the sphere spectrum; all are localizations
away from strongly dualizable objects, although these categories have
no nonzero compact objects. The Bousfield lattices of the harmonic,
-local,
-local,
-local and
-local
categories are described, along with some lattice maps between them. One consequence is
that in none of these categories is there a nonzero object that squares to zero. Another is that
the
-local
category has localizing subcategories that are not Bousfield classes.