{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:RTQKH25EAKIQLMXO2H5IUXJ2B6","short_pith_number":"pith:RTQKH25E","schema_version":"1.0","canonical_sha256":"8ce0a3eba4029105b2eed1fa8a5d3a0f8dc661d522faba6489ccf43bd446c1ac","source":{"kind":"arxiv","id":"1604.02942","version":1},"attestation_state":"computed","paper":{"title":"The Stacked Lyman-Alpha Emission Profile from the Circum-Galactic Medium of z~2 Quasars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"(2) Max-Planck-Institut fuer Astronomie, (3) ETH, Fabrizio Arrigoni Battaia (1), Garching, Joseph F. Hennawi (2), J. Xavier Prochaska (4) ((1) ESO, Sebastiano Cantalupo (3), UC Santa Cruz), Zurich (4) UCO/Lick Observatory","submitted_at":"2016-04-11T13:20:20Z","abstract_excerpt":"In the context of the FLASHLIGHT survey, we obtained deep narrow band images of 15 $z\\sim2$ quasars with GMOS on Gemini-South in an effort to measure Ly$\\alpha$ emission from circum- and inter-galactic gas on scales of hundreds of kpc from the central quasar. We do not detect bright giant Ly$\\alpha$ nebulae (SB~10$^{-17}$ erg s$^{-1}$ cm$^{-2}$ arcsec$^{-2}$ at distances >50 kpc) around any of our sources, although we routinely ($\\simeq47$%) detect smaller scale <50 kpc Ly$\\alpha$ emission at this SB level emerging from either the extended narrow emission line regions powered by the quasars or"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1604.02942","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2016-04-11T13:20:20Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"61cfbf0c2e2170fdf6cf4ff3e6bd6a2a793601e7c792fc2f59876a78176b0478","abstract_canon_sha256":"d665f3f3d3ba0cb20a8383e028bf7a1383df529dc50f26db85da94a019453f07"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:02:04.367095Z","signature_b64":"LJ+oC2BevnvYx3dYeSf0wb5Lf19N5MLifVUzQPsrgN/2CWih70A5qihLBoFRJdW9P7lyTfaL6Mr+Y5GGoecqCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8ce0a3eba4029105b2eed1fa8a5d3a0f8dc661d522faba6489ccf43bd446c1ac","last_reissued_at":"2026-05-18T01:02:04.366446Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:02:04.366446Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Stacked Lyman-Alpha Emission Profile from the Circum-Galactic Medium of z~2 Quasars","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"(2) Max-Planck-Institut fuer Astronomie, (3) ETH, Fabrizio Arrigoni Battaia (1), Garching, Joseph F. Hennawi (2), J. Xavier Prochaska (4) ((1) ESO, Sebastiano Cantalupo (3), UC Santa Cruz), Zurich (4) UCO/Lick Observatory","submitted_at":"2016-04-11T13:20:20Z","abstract_excerpt":"In the context of the FLASHLIGHT survey, we obtained deep narrow band images of 15 $z\\sim2$ quasars with GMOS on Gemini-South in an effort to measure Ly$\\alpha$ emission from circum- and inter-galactic gas on scales of hundreds of kpc from the central quasar. We do not detect bright giant Ly$\\alpha$ nebulae (SB~10$^{-17}$ erg s$^{-1}$ cm$^{-2}$ arcsec$^{-2}$ at distances >50 kpc) around any of our sources, although we routinely ($\\simeq47$%) detect smaller scale <50 kpc Ly$\\alpha$ emission at this SB level emerging from either the extended narrow emission line regions powered by the quasars or"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1604.02942","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1604.02942","created_at":"2026-05-18T01:02:04.366537+00:00"},{"alias_kind":"arxiv_version","alias_value":"1604.02942v1","created_at":"2026-05-18T01:02:04.366537+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1604.02942","created_at":"2026-05-18T01:02:04.366537+00:00"},{"alias_kind":"pith_short_12","alias_value":"RTQKH25EAKIQ","created_at":"2026-05-18T12:30:41.710351+00:00"},{"alias_kind":"pith_short_16","alias_value":"RTQKH25EAKIQLMXO","created_at":"2026-05-18T12:30:41.710351+00:00"},{"alias_kind":"pith_short_8","alias_value":"RTQKH25E","created_at":"2026-05-18T12:30:41.710351+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/RTQKH25EAKIQLMXO2H5IUXJ2B6","json":"https://pith.science/pith/RTQKH25EAKIQLMXO2H5IUXJ2B6.json","graph_json":"https://pith.science/api/pith-number/RTQKH25EAKIQLMXO2H5IUXJ2B6/graph.json","events_json":"https://pith.science/api/pith-number/RTQKH25EAKIQLMXO2H5IUXJ2B6/events.json","paper":"https://pith.science/paper/RTQKH25E"},"agent_actions":{"view_html":"https://pith.science/pith/RTQKH25EAKIQLMXO2H5IUXJ2B6","download_json":"https://pith.science/pith/RTQKH25EAKIQLMXO2H5IUXJ2B6.json","view_paper":"https://pith.science/paper/RTQKH25E","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1604.02942&json=true","fetch_graph":"https://pith.science/api/pith-number/RTQKH25EAKIQLMXO2H5IUXJ2B6/graph.json","fetch_events":"https://pith.science/api/pith-number/RTQKH25EAKIQLMXO2H5IUXJ2B6/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/RTQKH25EAKIQLMXO2H5IUXJ2B6/action/timestamp_anchor","attest_storage":"https://pith.science/pith/RTQKH25EAKIQLMXO2H5IUXJ2B6/action/storage_attestation","attest_author":"https://pith.science/pith/RTQKH25EAKIQLMXO2H5IUXJ2B6/action/author_attestation","sign_citation":"https://pith.science/pith/RTQKH25EAKIQLMXO2H5IUXJ2B6/action/citation_signature","submit_replication":"https://pith.science/pith/RTQKH25EAKIQLMXO2H5IUXJ2B6/action/replication_record"}},"created_at":"2026-05-18T01:02:04.366537+00:00","updated_at":"2026-05-18T01:02:04.366537+00:00"}