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Moduli spaces of rank 2 instanton sheaves on the projective space
We study the irreducible components of the moduli space of instanton sheaves
on , that is rank 2 torsion free sheaves with
satisfying . In particular, we
classify all instanton sheaves with , describing all the
irreducible components of their moduli space. A key ingredient for our argument
is the study of the moduli space of stable sheaves on
with Hilbert polynomial , which contains, as an
open subset, the moduli space of rank 0 instanton sheaves of multiplicity ;
we describe all the irreducible components of for .Comment: 22 page
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