{"paper":{"title":"Subaru Spectroscopy of the Giant Ly$\\alpha$ Nebula Associated with the High-$z$ Powerful Radio Galaxy 1243+036","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Japan), NAOJ), Tohoku Univ., Yoshiaki Taniguchi (Astronomical Institute, Youichi Ohyama (Subaru Telescope","submitted_at":"2003-12-20T06:09:06Z","abstract_excerpt":"We report results of our new spatially-resolved, optical spectroscopy of the giant Ly$\\alpha$ nebula around a powerful radio galaxy 1243+036 (4C+03.24) at $z=3.57$. The nebula is extended over $\\sim 30$ kpc from the nucleus, and forms a pair of cones or elongated bubbles. The high-velocity ($\\sim -1000$ km s$^{-1}$; blueshifted with respect to the systemic velocity) Ly$\\alpha$-emitting components are detected at both sides of the nucleus along its major axis. The northwestern nebula is more spectacular in its velocity shift (blueshifted by -1000 km s$^{-1}$ to -1400 km s$^{-1}$) and in its wid"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0312556","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"}