research
A Cosmic Lens Resolved a Quiet Galaxy to 70 Parsecs
Three magnified images exposed a surprisingly diffuse post-starburst system at redshift 5.18.
Summary
Three magnified images exposed a surprisingly diffuse post-starburst system at redshift 5.18.
A foreground galaxy cluster magnified a massive post-starburst galaxy at redshift 5.18 into three images, giving the team an estimated physical resolution near 70 parsecs—about seven times finer than JWST's normal blur at that distance. The galaxy's half-light radius was twice the expected size, its central stellar surface density was lower, and ionized gas sat off center. The authors say that geometry challenges a simple compact-core quenching picture for this object.
Why it matters
Three magnified images exposed a surprisingly diffuse post-starburst system at redshift 5.18.
Limits and context
No additional limitation was separately recorded.
Key claims
Three magnified images exposed a surprisingly diffuse post-starburst system at redshift 5.18.
Evidence: source-2026-09-24-009
Sources
- arXiv preprint 2609.28474arXiv · primary research
Corrections
No corrections have been recorded for this story.