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Oral Qual: "Clusters, Lensing, and Dark Matter Substructure Simulation"
Start Date: 6/11/2013Start Time: 2:00 PM
End Date: 6/11/2013End Time: 3:00 PM

Event Description

Title: Clusters, Lensing, and Dark Matter Substructure Simulation

Graduate Student: Justin Bird

Abstract: Over the last two decades, gravitational lensing has served as one of the cornerstones in the development of our standard model of cosmology and extragalactic astronomy. Given the importance of accurately measuring the mass, shape, and substructure of individual galactic clusters, and given the enormous expense of long exposure observation, it is vital to produce high-resolution maps of substructure within individual clusters. In this paper, a second-order gravitational flexion reconstruction code is presented as a python module GalFlex. The module has complete integration into the current first-order galaxy simulation toolkit GalSim, part of the GREAT3 collaboration. This second-order field would allow a more accurate mass reconstruction pipeline for groups to test their lensing analysis techniques.

Advisor: Dr. David Goldberg
Contact Information:
Name: Justin Bird
Phone: (215) 895-2732
Email: justin.bird@drexel.edu
Location:
Disque Hall Room 919
Audience:
  • Current Students
  • Faculty

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