We are excited to announce the latest installment of echo-IA, UNBIAS: UNdoing Bias from Intrinsic Alignments in Stage IV surveys,
to be held at Utrecht University from Monday, August 31 – Friday, September 4 2026.

The core meeting will focus on hands-on collaboration, with most of the week dedicated to project incubation, technical discussions, and cross-survey coordination. Activities on Friday will build on work completed throughout the week, including final presentations, planning follow-ups, and group tag-ups.

Intrinsic Alignments
About echo-IA
Organizing Committee

Intrinsic Alignments

Intrinsic Alignments (IA) refer to the correlated orientations of galaxies due to the large-scale tidal fields in which they form. With Stage IV surveys such as Euclid, LSST, and DESI now delivering data, IA becomes increasingly more important to understand and constrain; not only to mitigate biases from weak lensing analyses, but also to get a deeper glimpse into galaxy formation history.

For background reading, we recommend:

UNBIAS will bring together survey collaborations, theorists, and simulators to tackle these challenges through collaborative work, cross-survey coordination, and focused technical discussions.

About echo-IA

The UNBIAS workshop is organized as part of echo-IA (Enabling Cosmology with Homogenized Observations of Intrinsic Alignments), a community initiative uniting measurement and modeling experts to coordinate analyses of IA in a common framework for future surveys.

Previous echo-IA workshops include:

Organizing Committee