{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:2XGZ26DZGV2SX2N36W2R7WUTUO","short_pith_number":"pith:2XGZ26DZ","canonical_record":{"source":{"id":"0905.3437","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-21T04:32:32Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"f14c0514cdcdf20f65cfae64e1daa1d72fc433caa63d81076ed4dfa7ff282204","abstract_canon_sha256":"bd162d4b9ead2b97c7642a657e4296af4b503c8dcb33165e902b412a9bf3ae99"},"schema_version":"1.0"},"canonical_sha256":"d5cd9d787935752be9bbf5b51fda93a39daf65e6c00ed5c8c5064b9b82c420a2","source":{"kind":"arxiv","id":"0905.3437","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.3437","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"arxiv_version","alias_value":"0905.3437v1","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.3437","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"pith_short_12","alias_value":"2XGZ26DZGV2S","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"pith_short_16","alias_value":"2XGZ26DZGV2SX2N3","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"pith_short_8","alias_value":"2XGZ26DZ","created_at":"2026-07-04T15:42:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:2XGZ26DZGV2SX2N36W2R7WUTUO","target":"record","payload":{"canonical_record":{"source":{"id":"0905.3437","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-21T04:32:32Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"f14c0514cdcdf20f65cfae64e1daa1d72fc433caa63d81076ed4dfa7ff282204","abstract_canon_sha256":"bd162d4b9ead2b97c7642a657e4296af4b503c8dcb33165e902b412a9bf3ae99"},"schema_version":"1.0"},"canonical_sha256":"d5cd9d787935752be9bbf5b51fda93a39daf65e6c00ed5c8c5064b9b82c420a2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:42:48.913166Z","signature_b64":"bbGxbQXM6XfblN5hsIec3pQZMr2KVhhAuzL+zif459dj6+xZl+QtqZbw3B3avMlW6LO0aBepzsFIrph6gDVVCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d5cd9d787935752be9bbf5b51fda93a39daf65e6c00ed5c8c5064b9b82c420a2","last_reissued_at":"2026-07-04T15:42:48.912761Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:42:48.912761Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0905.3437","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":"2026-07-04T15:42:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"utVmKG4ZUrPWaeNN3zGZ6Zr8glCG1mHk9izpcSLCzL+LL43rCLrp3PfagelM50FzgACi3vC6fFzyHdrT4yEzAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:36:21.217372Z"},"content_sha256":"7d14d199c654473145ac324412d9dbceb94f9781e15427b6fcd14e7d39737dcc","schema_version":"1.0","event_id":"sha256:7d14d199c654473145ac324412d9dbceb94f9781e15427b6fcd14e7d39737dcc"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:2XGZ26DZGV2SX2N36W2R7WUTUO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Probing Turbulence in the Interstellar Medium of Galaxies","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":"2009-05-21T04:32:32Z","abstract_excerpt":"The power spectrum of HI intensity fluctuation of the interstellar medium carries information of the turbulence dynamics therein. We present a method to estimate the power spectrum of HI intensity fluctuation using radio interferometric observations. The method involves correlating the visibilities in the u-v plane at different baselines. This method is particularly use full for evaluating the power spectrum for the faint dwarf galaxies. We apply this method to 3 spiral galaxies and 5 dwarf galaxies. The measured power spectrum seem to follow a power law P_HI(U) = A U^\\alpha, suggesting turbul"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.3437","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0905.3437/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-04T15:42:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"evatbwbxmnjh+mjg1J8UIseBYD+66o3Wwyfy7JK1TwPwgB2PQz9dVTP3SgdLIg0rDT2AMAFJCNZBkp0A4jRaDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T09:36:21.217865Z"},"content_sha256":"97f42ac87343703ecd22e274a76c2901f79c92fec443003d7f314cd0d431ae37","schema_version":"1.0","event_id":"sha256:97f42ac87343703ecd22e274a76c2901f79c92fec443003d7f314cd0d431ae37"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2XGZ26DZGV2SX2N36W2R7WUTUO/bundle.json","state_url":"https://pith.science/pith/2XGZ26DZGV2SX2N36W2R7WUTUO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2XGZ26DZGV2SX2N36W2R7WUTUO/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":"2026-08-05T09:36:21Z","links":{"resolver":"https://pith.science/pith/2XGZ26DZGV2SX2N36W2R7WUTUO","bundle":"https://pith.science/pith/2XGZ26DZGV2SX2N36W2R7WUTUO/bundle.json","state":"https://pith.science/pith/2XGZ26DZGV2SX2N36W2R7WUTUO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2XGZ26DZGV2SX2N36W2R7WUTUO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:2XGZ26DZGV2SX2N36W2R7WUTUO","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":"bd162d4b9ead2b97c7642a657e4296af4b503c8dcb33165e902b412a9bf3ae99","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-21T04:32:32Z","title_canon_sha256":"f14c0514cdcdf20f65cfae64e1daa1d72fc433caa63d81076ed4dfa7ff282204"},"schema_version":"1.0","source":{"id":"0905.3437","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.3437","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"arxiv_version","alias_value":"0905.3437v1","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.3437","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"pith_short_12","alias_value":"2XGZ26DZGV2S","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"pith_short_16","alias_value":"2XGZ26DZGV2SX2N3","created_at":"2026-07-04T15:42:48Z"},{"alias_kind":"pith_short_8","alias_value":"2XGZ26DZ","created_at":"2026-07-04T15:42:48Z"}],"graph_snapshots":[{"event_id":"sha256:97f42ac87343703ecd22e274a76c2901f79c92fec443003d7f314cd0d431ae37","target":"graph","created_at":"2026-07-04T15:42:48Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0905.3437/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The power spectrum of HI intensity fluctuation of the interstellar medium carries information of the turbulence dynamics therein. We present a method to estimate the power spectrum of HI intensity fluctuation using radio interferometric observations. The method involves correlating the visibilities in the u-v plane at different baselines. This method is particularly use full for evaluating the power spectrum for the faint dwarf galaxies. We apply this method to 3 spiral galaxies and 5 dwarf galaxies. The measured power spectrum seem to follow a power law P_HI(U) = A U^\\alpha, suggesting turbul","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":"2009-05-21T04:32:32Z","title":"Probing Turbulence in the Interstellar Medium of Galaxies"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.3437","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":"sha256:7d14d199c654473145ac324412d9dbceb94f9781e15427b6fcd14e7d39737dcc","target":"record","created_at":"2026-07-04T15:42:48Z","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":"bd162d4b9ead2b97c7642a657e4296af4b503c8dcb33165e902b412a9bf3ae99","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-05-21T04:32:32Z","title_canon_sha256":"f14c0514cdcdf20f65cfae64e1daa1d72fc433caa63d81076ed4dfa7ff282204"},"schema_version":"1.0","source":{"id":"0905.3437","kind":"arxiv","version":1}},"canonical_sha256":"d5cd9d787935752be9bbf5b51fda93a39daf65e6c00ed5c8c5064b9b82c420a2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d5cd9d787935752be9bbf5b51fda93a39daf65e6c00ed5c8c5064b9b82c420a2","first_computed_at":"2026-07-04T15:42:48.912761Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:42:48.912761Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"bbGxbQXM6XfblN5hsIec3pQZMr2KVhhAuzL+zif459dj6+xZl+QtqZbw3B3avMlW6LO0aBepzsFIrph6gDVVCg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:42:48.913166Z","signed_message":"canonical_sha256_bytes"},"source_id":"0905.3437","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:7d14d199c654473145ac324412d9dbceb94f9781e15427b6fcd14e7d39737dcc","sha256:97f42ac87343703ecd22e274a76c2901f79c92fec443003d7f314cd0d431ae37"],"state_sha256":"518f691763f5a52be20e953c2122fc91dbd869743aea5221a178eb0a0f19be86"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0b7nx7iFll8gEEkmxte/L36Hu5D0bKWvFi3fwDQKsh19DoORBNtszMqNX7+I4qY0yEq3EercflgUWMfc+uWgAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T09:36:21.221376Z","bundle_sha256":"9d6f128ed40eccb7723f6dff77064e28469c88f8b90d025f1981b1e747f82310"}}