Oscillatory integral operators in scattering theory Academic Article uri icon


  • We consider a particular Fourier integral operator with folding canonical relations, which arises in scattering theory: the Radon Transform of Melrose and Taylor. We obtain the regularity properties of this operator when the obstacle admits tangent planes with contact of precise order k (Theorem 1.1 and its Corollary). For these purposes, we derive asymptotic estimates for oscillatory integral operators in ℝn with folding canonical relations (Theorem 2.2). Asymptotics correspond to vanishing principal curvature of a fold of one of the projections from the canonical relation, and to small support of the localization of oscillatory integral operator.

author list (cited authors)

  • Comech, A.

publication date

  • December 1997