Arun Kannawadi

Observational Cosmologist. Research Software Engineer.

Photo by Stephanie Reif

I am an astrophysicist and a researcher in cosmology, the study of origin and evolution of the Universe. I am a faculty member (assistant research professor) in the Physics department at Duke University. Previously, I was a member of the research staff (associate research scholar) at the Department of Astrophysical Sciences, Princeton University.

I am interested in answering the questions about the distribution of (dark) matter in the Universe, also known as the large-scale structure and using it to understand the contents (dark matter and dark energy) of the Universe. To achieve this goal, I use various statistical techniques on large datasets obtained with telescopes, from ground and in space.

On a day-to-day basis, I work on image processing pipelines and algorithms that work at raw pixel-level data to extract useful information from millions (soon to be billions) of galaxies namely galaxy fluxes (and colors) and shapes. I am a member of the Data Management team of the Rubin Observatory project and I am in-charge of the software pipeline measuring the signal of weak gravitational lensing from the Legacy Survey of Space and Time (LSST).

selected publications

  1. MNRAS
    Mitigating the effects of undersampling in weak lensing shear estimation with metacalibration
    Arun Kannawadi, Erik Rosenberg, and Henk Hoekstra
    Monthly Notices of the Royal Astronomical Society, Apr 2021
  2. A&A
    KiDS-1000 Cosmology: Multi-probe weak gravitational lensing and spectroscopic galaxy clustering constraints
    Catherine Heymans, Tilman Tröster, Marika Asgari, and 31 more authors
    Astronomy and Astrophysics, Feb 2021
  3. A&A
    Accounting for object detection bias in weak gravitational lensing studies
    Henk Hoekstra, Arun Kannawadi, and Thomas D. Kitching
    Astronomy and Astrophysics, Feb 2021
  4. A&A
    KiDS+VIKING-450: Cosmic shear tomography with optical and infrared data
    H. Hildebrandt, F. Köhlinger, J. L. van den Busch, and 25 more authors
    Astronomy and Astrophysics, Jan 2020
  5. A&A
    Towards emulating cosmic shear data: revisiting the calibration of the shear measurements for the Kilo-Degree Survey
    Arun Kannawadi, Henk Hoekstra, Lance Miller, and 9 more authors
    Astronomy and Astrophysics, Apr 2019