Search Results for author: Arun Kannawadi

Found 3 papers, 1 papers with code

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

Paper
Add Code

KiDS-1000 catalogue: Weak gravitational lensing shear measurements

2 code implementations • 3 Jul 2020 • Benjamin Giblin, Catherine Heymans, Marika Asgari, Hendrik Hildebrandt, Henk Hoekstra, Benjamin Joachimi, Arun Kannawadi, Konrad Kuijken, Chieh-An Lin, Lance Miller, Tilman Tröster, Jan Luca van den Busch, Angus H. Wright, Maciej Bilicki, Chris Blake, Jelte de Jong, Andrej Dvornik, Thomas Erben, Fedor Getman, Nicola R. Napolitano, Peter Schneider, HuanYuan Shan

We present weak lensing shear catalogues from the fourth data release of the Kilo-Degree Survey, KiDS-1000, spanning 1006 square degrees of deep and high-resolution imaging.

Cosmology and Nongalactic Astrophysics

Paper
Code

KiDS+VIKING-450: Improved cosmological parameter constraints from redshift calibration with self-organising maps

no code implementations • 8 May 2020 • Angus H. Wright, Hendrik Hildebrandt, Jan Luca van den Busch, Catherine Heymans, Benjamin Joachimi, Arun Kannawadi, Konrad Kuijken

We present updated cosmological constraints for the KiDS+VIKING-450 cosmic shear dataset (KV450), estimated using redshift distributions and photometric samples defined using self organising maps (SOMs).

Cosmology and Nongalactic Astrophysics

Paper
Add Code

Cannot find the paper you are looking for? You can Submit a new open access paper.