{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:2R7GHM6JSER54FZDCNLCV2MGDK","short_pith_number":"pith:2R7GHM6J","schema_version":"1.0","canonical_sha256":"d47e63b3c99123de172313562ae9861a98b111909aec5ef49dfa7fe5997f2a9c","source":{"kind":"arxiv","id":"0905.1450","version":1},"attestation_state":"computed","paper":{"title":"The Scale Height of NGC 1058 Measured from its HI Power Spectrum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ayesha Begum, Jayaram N. Chengalur, Prasun Dutta, Somnath Bharadwaj","submitted_at":"2009-05-10T04:58:39Z","abstract_excerpt":"We have measured the HI power spectrum of the nearly face-on spiral galaxy NGC 1058 from radio-interferometric observations using a visibility based estimator. The power spectrum is well fitted by two different power laws $P(U)=AU^{\\alpha}$, one with $\\alpha =- 2.5\\pm 0.6$ at small length-scales $(600 {\\rm pc} {\\rm to} 1.5 {\\rm kpc})$ and another with $\\alpha =- 1.0\\pm 0.2$ at large length-scales $(1.5 {\\rm kpc} {\\rm to} 10.0\n  {\\rm kpc})$. We interpret this change in the slope of the power spectrum as a transition from 3D turbulence at small length-scales to 2D turbulence in the plane of the "},"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":"0905.1450","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-10T04:58:39Z","cross_cats_sorted":[],"title_canon_sha256":"f067c9475c93b1a249e8eacf64099080ab7f9da8feb21864fc08e1b06d74dc1b","abstract_canon_sha256":"82cad80f6649f683a72a0f31c47baa19c997ecb1cddaa13096fc4c53c9f82022"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:13:46.072816Z","signature_b64":"gI97+I/y48tkZInPWZCBdrgsgU5zHfl4GldB5fvIbnO6gSo375g7501kAJlnp5pBmqI2FsGJOs/UqjNP4GfQCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d47e63b3c99123de172313562ae9861a98b111909aec5ef49dfa7fe5997f2a9c","last_reissued_at":"2026-05-18T02:13:46.072111Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:13:46.072111Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Scale Height of NGC 1058 Measured from its HI Power Spectrum","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"Ayesha Begum, Jayaram N. Chengalur, Prasun Dutta, Somnath Bharadwaj","submitted_at":"2009-05-10T04:58:39Z","abstract_excerpt":"We have measured the HI power spectrum of the nearly face-on spiral galaxy NGC 1058 from radio-interferometric observations using a visibility based estimator. The power spectrum is well fitted by two different power laws $P(U)=AU^{\\alpha}$, one with $\\alpha =- 2.5\\pm 0.6$ at small length-scales $(600 {\\rm pc} {\\rm to} 1.5 {\\rm kpc})$ and another with $\\alpha =- 1.0\\pm 0.2$ at large length-scales $(1.5 {\\rm kpc} {\\rm to} 10.0\n  {\\rm kpc})$. We interpret this change in the slope of the power spectrum as a transition from 3D turbulence at small length-scales to 2D turbulence in the plane of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.1450","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":"0905.1450","created_at":"2026-05-18T02:13:46.072240+00:00"},{"alias_kind":"arxiv_version","alias_value":"0905.1450v1","created_at":"2026-05-18T02:13:46.072240+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.1450","created_at":"2026-05-18T02:13:46.072240+00:00"},{"alias_kind":"pith_short_12","alias_value":"2R7GHM6JSER5","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_16","alias_value":"2R7GHM6JSER54FZD","created_at":"2026-05-18T12:25:58.018023+00:00"},{"alias_kind":"pith_short_8","alias_value":"2R7GHM6J","created_at":"2026-05-18T12:25:58.018023+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/2R7GHM6JSER54FZDCNLCV2MGDK","json":"https://pith.science/pith/2R7GHM6JSER54FZDCNLCV2MGDK.json","graph_json":"https://pith.science/api/pith-number/2R7GHM6JSER54FZDCNLCV2MGDK/graph.json","events_json":"https://pith.science/api/pith-number/2R7GHM6JSER54FZDCNLCV2MGDK/events.json","paper":"https://pith.science/paper/2R7GHM6J"},"agent_actions":{"view_html":"https://pith.science/pith/2R7GHM6JSER54FZDCNLCV2MGDK","download_json":"https://pith.science/pith/2R7GHM6JSER54FZDCNLCV2MGDK.json","view_paper":"https://pith.science/paper/2R7GHM6J","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0905.1450&json=true","fetch_graph":"https://pith.science/api/pith-number/2R7GHM6JSER54FZDCNLCV2MGDK/graph.json","fetch_events":"https://pith.science/api/pith-number/2R7GHM6JSER54FZDCNLCV2MGDK/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2R7GHM6JSER54FZDCNLCV2MGDK/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2R7GHM6JSER54FZDCNLCV2MGDK/action/storage_attestation","attest_author":"https://pith.science/pith/2R7GHM6JSER54FZDCNLCV2MGDK/action/author_attestation","sign_citation":"https://pith.science/pith/2R7GHM6JSER54FZDCNLCV2MGDK/action/citation_signature","submit_replication":"https://pith.science/pith/2R7GHM6JSER54FZDCNLCV2MGDK/action/replication_record"}},"created_at":"2026-05-18T02:13:46.072240+00:00","updated_at":"2026-05-18T02:13:46.072240+00:00"}