Accounting for object detection bias in weak gravitational lensing studies

no code implementations • 8 Oct 2020 • Henk Hoekstra, Arun Kannawadi, Thomas D. Kitching

We find that MetaDetection is able to account for blending, leading to average multiplicative biases that meet requirements for Stage IV surveys, provided a sufficiently accurate model for the point spread function is available.

Object Detection Cosmology and Nongalactic Astrophysics

Towards Machine-assisted Meta-Studies: The Hubble Constant

no code implementations • 31 Jan 2019 • Tom Crossland, Pontus Stenetorp, Sebastian Riedel, Daisuke Kawata, Thomas D. Kitching, Rupert A. C. Croft

We present an approach for automatic extraction of measured values from the astrophysical literature, using the Hubble constant for our pilot study.

Second-Generation Curvelets on the Sphere

no code implementations • 17 Nov 2015 • Jennifer Y. H. Chan, Boris Leistedt, Thomas D. Kitching, Jason D. McEwen

We present a new second-generation curvelet transform, where scale-discretised curvelets are constructed directly on the sphere.

Information Theory Instrumentation and Methods for Astrophysics Information Theory