Compactification of M<SUB>P<SUB>3</SUB></SUB>(0,2) and Poncelet pairs of conics

Let M(0, 2) denote the quasi-projective variety of isomorphism classes of stable rank 2 vector bundles on P3(C) with C1=0 and C2=2 . In this paper we study a natural (irreducible) compactification of M(0, 2) and describe explicitly the sheaves on P3 which occur in the closure of M(0, 2) in the moduli space of semi-stable sheaves on P3 with c1= 0, c2=2 and c3=0