{"paper":{"title":"The transverse proximity effect in spectral hardness on the line of sight towards HE 2347-4342","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"(2) Hamburger Sternwarte, 3), (3) Universit\\\"at Potsdam), A. Dall'Aglio (1) ((1) Astrophysikalisches Institut Potsdam, C. Fechner (2, G. Worseck (1), L. Wisotzki (1)","submitted_at":"2007-04-02T13:31:00Z","abstract_excerpt":"We report the discovery of 14 quasars in the vicinity of HE2347-4342, one of the two quasars whose intergalactic HeII forest has been resolved with FUSE. By analysing the HI and the HeII opacity variations separately, no transverse proximity effect is detected near three foreground quasars of HE2347-4342: QSOJ23503-4328 (z=2.282, $\\vartheta=3.59$ arcmin), QSOJ23500-4319 (z=2.302, $\\vartheta=8.77$ arcmin) and QSOJ23495-4338 (z=2.690, $\\vartheta=16.28$ arcmin). This is primarily due to line contamination and overdensities probably created by large-scale structure. By comparing the HI absorption "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.0187","kind":"arxiv","version":2},"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"}