1. The Collimation Signatures of Gamma-Ray Bursts: Jet Properties and Energetic Inferred from X-ray Afterglow Observations Open Access Author: Racusin, Judith Lea Title: The Collimation Signatures of Gamma-Ray Bursts: Jet Properties and Energetic Inferred from X-ray Afterglow Observations Graduate Program: Astronomy and Astrophysics Keywords: AstrophysicsX-raysGamma-ray burstsAfterglows File: Download racusin_thesis.pdf Committee Members: David Nelson Burrows, Dissertation Advisor/Co-AdvisorDavid Nelson Burrows, Committee Chair/Co-ChairPeter Istvan Meszaros, Committee MemberJohn Andrew Nousek, Committee MemberDerek Brindley Fox, Committee MemberPaul Sommers, Committee Member