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91探花
Black Hole

Lensing of space time around a black hole. At 91探花 we study black holes observationally and theoretically on all size and time scales - it is some of our core work.

Credit: ALAIN RIAZUELO, IAP/UPMC/CNRS. CLICK HERE TO VIEW MORE IMAGES.

Casey Cragg

DPhil Student

Sub department

  • Astrophysics

Research groups

  • Beecroft Institute for Particle Astrophysics and Cosmology
  • Euclid
casey.cragg@physics.ox.ac.uk
  • About

I did my undergrad degree in Astrophysics at UCL, where for my MSci project I studied the redshift evolution of galaxy clustering statistics using data from Baryon Oscillation Spectroscopic Survey. As a DPhil student, I am working with Prof. Lance Miller and Dr Chris Duncan on preparations for the weak gravitational lensing measurements that will be conducted by the ESA's Euclid mission. I am interested in systematic effects which hinder weak lensing measurements, in particular observational systematics such as those introduced due to incomplete knowledge of the telescope point spread function (PSF), and how these impact the cosmological information that can be extracted from photometric galaxy surveys.

Research interests

Cosmology
Euclid
Weak Lensing

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Clarendon Laboratory,

Parks Road,

91探花,

OX1 3PU

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