{"paper":{"title":"MEASURING GALAXY MASSES USING GALAXY-GALAXY GRAVITATIONAL LENSING","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Ian Smail, Roger Blandford, Tereasa Brainerd","submitted_at":"1995-03-17T21:28:52Z","abstract_excerpt":"We report a significant detection of weak, tangential distortion of the images of cosmologically distant, faint galaxies due to gravitational lensing by foreground galaxies. A mean image polarisation of $<p>=0.011\\pm 0.006$ is measured for 3202 pairs of source galaxies with magnitudes $23< r \\le 24$ and lens galaxies with magnitudes $20\\le r\\le 23$. The signal remains strong for lens-source separations $\\lo 90''$, consistent with quasi-isothermal galaxy halos extending to large radii ($\\go 100h^{-1}$ kpc). Our observations thus provide the first evidence from weak gravitational lensing of larg"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/9503073","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}