3–11 Jul 2025
University of Adelaide
Australia/Adelaide timezone
Please note: Timetable is provisional for the time being!

Unveiling Gravitational Lenses in Colour: Multi-band Reconstruction of Sixteen Lensed Systems with PISCO

9 Jul 2025, 10:45
15m
Darling West (University of Adelaide)

Darling West

University of Adelaide

Speaker

Huimin Qu (The University of Sydney)

Description

The growing flood of gravitational lensing data in the era of big-data astronomy brings both opportunities and challenges—particularly in modeling efficiency and the reliability of inferences from a given dataset.
In this work, we reconstruct 16 strong lens candidates using multi-band PISCO data from the Magellan Telescope, employing a scalable pipeline that jointly models all four bands (z, i, r, g) while correcting for image misalignments. This approach significantly reduces parameter uncertainties and uncovers lens systems with complex mass distributions, substructures, and potential exotic configurations. A further comparison with HST-based reconstructions will help clarify the strengths and limitations of PISCO’s resolution in constraining lens models.

Author

Huimin Qu (The University of Sydney)

Co-authors

Daniel Ballard (The University of Sydney) Geraint Lewis

Presentation materials

There are no materials yet.