{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:5JMZQ4TQXDSL4BOJTXIBDQ573O","short_pith_number":"pith:5JMZQ4TQ","canonical_record":{"source":{"id":"1208.5386","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-08-27T13:27:28Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"e8bada7433e633bf02f353610db4b1c3bf4cb1307be2665e95dca6d603229c70","abstract_canon_sha256":"153a4bf89db1f7283f5c0caa977d1779c6b2f74e8b11b4bb5410f11fd758b3f0"},"schema_version":"1.0"},"canonical_sha256":"ea59987270b8e4be05c99dd011c3bfdbaeaa80954752e14acfca2d3d1036db2b","source":{"kind":"arxiv","id":"1208.5386","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5386","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5386v1","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5386","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"pith_short_12","alias_value":"5JMZQ4TQXDSL","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"5JMZQ4TQXDSL4BOJ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"5JMZQ4TQ","created_at":"2026-05-18T12:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:5JMZQ4TQXDSL4BOJTXIBDQ573O","target":"record","payload":{"canonical_record":{"source":{"id":"1208.5386","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-08-27T13:27:28Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"e8bada7433e633bf02f353610db4b1c3bf4cb1307be2665e95dca6d603229c70","abstract_canon_sha256":"153a4bf89db1f7283f5c0caa977d1779c6b2f74e8b11b4bb5410f11fd758b3f0"},"schema_version":"1.0"},"canonical_sha256":"ea59987270b8e4be05c99dd011c3bfdbaeaa80954752e14acfca2d3d1036db2b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:46:59.588260Z","signature_b64":"tyf1J9nICTToGhhAyR+sbR9U7BHBLhOttRk/xEEP+xIfJQiOy7rLBKhzkopmKN+sH9trVNc0soVulJF6g8/3DQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ea59987270b8e4be05c99dd011c3bfdbaeaa80954752e14acfca2d3d1036db2b","last_reissued_at":"2026-05-18T03:46:59.587769Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:46:59.587769Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.5386","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:46:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QSFZeY4fxOdVgi7ZJc8jsx2yfSc4TXiwj/DhEmqNvHZ946aePSx/DAaR/JYzoiIJKdFe4p9oAX08h6LUtKmACg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:38:21.028828Z"},"content_sha256":"708036c04db6811536b6ad58ea19359bfcbca85e25a7786c1a582640db0c0cd2","schema_version":"1.0","event_id":"sha256:708036c04db6811536b6ad58ea19359bfcbca85e25a7786c1a582640db0c0cd2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:5JMZQ4TQXDSL4BOJTXIBDQ573O","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing interstellar turbulence in spiral galaxies using HI power spectrum analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"Ayesha Begum, Jayaram N. Chengalur, Prasun Dutta, Somnath Bharadwaj","submitted_at":"2012-08-27T13:27:28Z","abstract_excerpt":"We estimate the \\HI intensity fluctuation power spectrum for a sample of 18 spiral galaxies chosen from THINGS. Our analysis spans a large range of length-scales from $\\sim 300 {\\rm pc}$ to $\\sim 16 {\\rm kpc}$ across the entire galaxy sample. We find that the power spectrum of each galaxy can be well fitted by a power law $P_{\\rm HI}(U) = A U^{\\alpha}$, with an index $\\alpha$ that varies from galaxy to galaxy. For some of the galaxies the scale-invariant power-law power spectrum extends to length-scales that are comparable to the size of the galaxy's disk. The distribution of $\\alpha$ is stron"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5386","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:46:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rSNGExjt7+EBrhIEOz6gU3mxmbFLjYRdgbE2Wl1KO277mzTG100MHiRsj/KllChABSxJkpQbVpbI9bIhAoT4DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T01:38:21.029188Z"},"content_sha256":"f372f346b579ce594f2493dc14d414680dab7a63af11f95f818f3d25d11c945d","schema_version":"1.0","event_id":"sha256:f372f346b579ce594f2493dc14d414680dab7a63af11f95f818f3d25d11c945d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/5JMZQ4TQXDSL4BOJTXIBDQ573O/bundle.json","state_url":"https://pith.science/pith/5JMZQ4TQXDSL4BOJTXIBDQ573O/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/5JMZQ4TQXDSL4BOJTXIBDQ573O/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-30T01:38:21Z","links":{"resolver":"https://pith.science/pith/5JMZQ4TQXDSL4BOJTXIBDQ573O","bundle":"https://pith.science/pith/5JMZQ4TQXDSL4BOJTXIBDQ573O/bundle.json","state":"https://pith.science/pith/5JMZQ4TQXDSL4BOJTXIBDQ573O/state.json","well_known_bundle":"https://pith.science/.well-known/pith/5JMZQ4TQXDSL4BOJTXIBDQ573O/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:5JMZQ4TQXDSL4BOJTXIBDQ573O","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"153a4bf89db1f7283f5c0caa977d1779c6b2f74e8b11b4bb5410f11fd758b3f0","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-08-27T13:27:28Z","title_canon_sha256":"e8bada7433e633bf02f353610db4b1c3bf4cb1307be2665e95dca6d603229c70"},"schema_version":"1.0","source":{"id":"1208.5386","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.5386","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"arxiv_version","alias_value":"1208.5386v1","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.5386","created_at":"2026-05-18T03:46:59Z"},{"alias_kind":"pith_short_12","alias_value":"5JMZQ4TQXDSL","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"5JMZQ4TQXDSL4BOJ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"5JMZQ4TQ","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:f372f346b579ce594f2493dc14d414680dab7a63af11f95f818f3d25d11c945d","target":"graph","created_at":"2026-05-18T03:46:59Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We estimate the \\HI intensity fluctuation power spectrum for a sample of 18 spiral galaxies chosen from THINGS. Our analysis spans a large range of length-scales from $\\sim 300 {\\rm pc}$ to $\\sim 16 {\\rm kpc}$ across the entire galaxy sample. We find that the power spectrum of each galaxy can be well fitted by a power law $P_{\\rm HI}(U) = A U^{\\alpha}$, with an index $\\alpha$ that varies from galaxy to galaxy. For some of the galaxies the scale-invariant power-law power spectrum extends to length-scales that are comparable to the size of the galaxy's disk. The distribution of $\\alpha$ is stron","authors_text":"Ayesha Begum, Jayaram N. Chengalur, Prasun Dutta, Somnath Bharadwaj","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-08-27T13:27:28Z","title":"Probing interstellar turbulence in spiral galaxies using HI power spectrum analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.5386","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:708036c04db6811536b6ad58ea19359bfcbca85e25a7786c1a582640db0c0cd2","target":"record","created_at":"2026-05-18T03:46:59Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"153a4bf89db1f7283f5c0caa977d1779c6b2f74e8b11b4bb5410f11fd758b3f0","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2012-08-27T13:27:28Z","title_canon_sha256":"e8bada7433e633bf02f353610db4b1c3bf4cb1307be2665e95dca6d603229c70"},"schema_version":"1.0","source":{"id":"1208.5386","kind":"arxiv","version":1}},"canonical_sha256":"ea59987270b8e4be05c99dd011c3bfdbaeaa80954752e14acfca2d3d1036db2b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ea59987270b8e4be05c99dd011c3bfdbaeaa80954752e14acfca2d3d1036db2b","first_computed_at":"2026-05-18T03:46:59.587769Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:46:59.587769Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tyf1J9nICTToGhhAyR+sbR9U7BHBLhOttRk/xEEP+xIfJQiOy7rLBKhzkopmKN+sH9trVNc0soVulJF6g8/3DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:46:59.588260Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.5386","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:708036c04db6811536b6ad58ea19359bfcbca85e25a7786c1a582640db0c0cd2","sha256:f372f346b579ce594f2493dc14d414680dab7a63af11f95f818f3d25d11c945d"],"state_sha256":"afa07acbf480a47939fd3262208a61ae72d7c904fb88e934d96271c7a0a39793"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KcMKm2KIlKmD4alD4DZ+7xdZOZiD1Yv6I12wBzbk/lADdCWZSf3VmyoOg/IJLlll7IF7pnZizt8bC2pJB87/Bg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T01:38:21.031388Z","bundle_sha256":"8236af3fcc47fb4d5dd6015826deafac478ae64d1e427cfd1de78c73c3a77f6a"}}