{"paper":{"title":"Bipolar ionization cones in the Extended Narrow-Line Region of nearby QSO2s","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Bruno Dall'Agnol de Oliveira, Giuseppina Fabbiano, Henrique Roberto Schmitt, Luis Colina, Luis Felipe Longo Micchi, Martin Elvis, Michael Crenshaw, Peter Maksym, Steven Kraemer, Thaisa Storchi-Bergmann, Travis Cody Fischer","submitted_at":"2018-10-15T09:44:19Z","abstract_excerpt":"We have used narrow-band [OIII]$\\lambda\\lambda$4959,5007 and H$\\alpha$+[NII]$\\lambda\\lambda6548,84$ Hubble Space Telescope (HST) images of 9 luminous (L[OIII]$>10^{42}$erg s$^{-1}$) type 2 QSOs with redshifts $0.1<z<0.5$ in order to constrain the geometry of their Extended Narrow-Line Regions (ENLR), as recent ground-based studies suggest these regions become more spherical at high luminosities due to destruction of the torus. We find instead elongated ENLRs reaching 4 to 19 kpc from the nucleus and bipolar ionization cones in [OIII]/(H$\\alpha$+[NII]) excitation maps indicating that the torus "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.06246","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"}