{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:IKDNLHW7L2LLMUN4YU5Q6I2D3S","short_pith_number":"pith:IKDNLHW7","canonical_record":{"source":{"id":"astro-ph/0607414","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-18T13:42:20Z","cross_cats_sorted":[],"title_canon_sha256":"3ad377ec9d9373edb5ef2b5a9bf337bfdc6db60ea89becc4aa6790994ee1bb4e","abstract_canon_sha256":"769804fcb03945cd2a09407aa36ae7a15d21d59a4939505ca698a5f9f91b3ef6"},"schema_version":"1.0"},"canonical_sha256":"4286d59edf5e96b651bcc53b0f2343dcac4676622330eb3854b0f309930bee50","source":{"kind":"arxiv","id":"astro-ph/0607414","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0607414","created_at":"2026-05-18T01:40:30Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0607414v2","created_at":"2026-05-18T01:40:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0607414","created_at":"2026-05-18T01:40:30Z"},{"alias_kind":"pith_short_12","alias_value":"IKDNLHW7L2LL","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"IKDNLHW7L2LLMUN4","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"IKDNLHW7","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:IKDNLHW7L2LLMUN4YU5Q6I2D3S","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0607414","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-18T13:42:20Z","cross_cats_sorted":[],"title_canon_sha256":"3ad377ec9d9373edb5ef2b5a9bf337bfdc6db60ea89becc4aa6790994ee1bb4e","abstract_canon_sha256":"769804fcb03945cd2a09407aa36ae7a15d21d59a4939505ca698a5f9f91b3ef6"},"schema_version":"1.0"},"canonical_sha256":"4286d59edf5e96b651bcc53b0f2343dcac4676622330eb3854b0f309930bee50","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:40:30.041299Z","signature_b64":"zo0zQQ3Dc5D3kRlfWVAVCCk8Y9JZVUmlF0b+OIR2Pln+SUNkVxQxgHGeWOuHPIVCITJ5yA2VhZ0T7TW4+ca4Dg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4286d59edf5e96b651bcc53b0f2343dcac4676622330eb3854b0f309930bee50","last_reissued_at":"2026-05-18T01:40:30.040615Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:40:30.040615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0607414","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:40:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LOK1QH7GhPmcusjglTfmUu4FUg6d7UZ2ly1Xr0wd40LRAPT12FLuLNlyiYK1bOXQGrddb3vYRK2eLoT4dRC4Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:38:20.507054Z"},"content_sha256":"c9851c8705c61afa2a5adb2ead54b5d67d66d69026286a027e64f70fd0a05578","schema_version":"1.0","event_id":"sha256:c9851c8705c61afa2a5adb2ead54b5d67d66d69026286a027e64f70fd0a05578"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:IKDNLHW7L2LLMUN4YU5Q6I2D3S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A RIAF Interpretation for the Past Higher Activity of the Galactic Center Black Hole and the 511 keV Annihilation Emission","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"Tomonori Totani (Kyoto)","submitted_at":"2006-07-18T13:42:20Z","abstract_excerpt":"There are several lines of evidence that the super-massive black hole at the Galactic center had higher activities in the past than directly observed at present. Here I show that these lines of evidence can quantitatively and consistently be explained if the mean accretion rate during the past ~10^7 yrs has been ~10^{3-4} times higher than the current rate, by the picture of radiatively inefficient accretion flow (RIAF) and associated outflow that has been successfully applied to Sgr A*. I argue that this increased rate and its duration are theoretically reasonable in the Galactic center envir"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0607414","kind":"arxiv","version":2},"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":"2026-05-18T01:40:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sLsS+d+ZVCO3EmT/IBAk+mpUjdoFe7QE60+f6Rvdmb39O46oQEdlf2AWBYhsMNBXdizxBXtDIBiGKo/Og+CxCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T06:38:20.507532Z"},"content_sha256":"62e6ff3a7c9635fa697a6f3274a475cdc4180205b72b4ab0ec4e708f63851b72","schema_version":"1.0","event_id":"sha256:62e6ff3a7c9635fa697a6f3274a475cdc4180205b72b4ab0ec4e708f63851b72"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IKDNLHW7L2LLMUN4YU5Q6I2D3S/bundle.json","state_url":"https://pith.science/pith/IKDNLHW7L2LLMUN4YU5Q6I2D3S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IKDNLHW7L2LLMUN4YU5Q6I2D3S/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":"2026-05-26T06:38:20Z","links":{"resolver":"https://pith.science/pith/IKDNLHW7L2LLMUN4YU5Q6I2D3S","bundle":"https://pith.science/pith/IKDNLHW7L2LLMUN4YU5Q6I2D3S/bundle.json","state":"https://pith.science/pith/IKDNLHW7L2LLMUN4YU5Q6I2D3S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IKDNLHW7L2LLMUN4YU5Q6I2D3S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:IKDNLHW7L2LLMUN4YU5Q6I2D3S","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":"769804fcb03945cd2a09407aa36ae7a15d21d59a4939505ca698a5f9f91b3ef6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-18T13:42:20Z","title_canon_sha256":"3ad377ec9d9373edb5ef2b5a9bf337bfdc6db60ea89becc4aa6790994ee1bb4e"},"schema_version":"1.0","source":{"id":"astro-ph/0607414","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0607414","created_at":"2026-05-18T01:40:30Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0607414v2","created_at":"2026-05-18T01:40:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0607414","created_at":"2026-05-18T01:40:30Z"},{"alias_kind":"pith_short_12","alias_value":"IKDNLHW7L2LL","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"IKDNLHW7L2LLMUN4","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"IKDNLHW7","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:62e6ff3a7c9635fa697a6f3274a475cdc4180205b72b4ab0ec4e708f63851b72","target":"graph","created_at":"2026-05-18T01:40:30Z","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":"There are several lines of evidence that the super-massive black hole at the Galactic center had higher activities in the past than directly observed at present. Here I show that these lines of evidence can quantitatively and consistently be explained if the mean accretion rate during the past ~10^7 yrs has been ~10^{3-4} times higher than the current rate, by the picture of radiatively inefficient accretion flow (RIAF) and associated outflow that has been successfully applied to Sgr A*. I argue that this increased rate and its duration are theoretically reasonable in the Galactic center envir","authors_text":"Tomonori Totani (Kyoto)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-07-18T13:42:20Z","title":"A RIAF Interpretation for the Past Higher Activity of the Galactic Center Black Hole and the 511 keV Annihilation Emission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0607414","kind":"arxiv","version":2},"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:c9851c8705c61afa2a5adb2ead54b5d67d66d69026286a027e64f70fd0a05578","target":"record","created_at":"2026-05-18T01:40:30Z","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":"769804fcb03945cd2a09407aa36ae7a15d21d59a4939505ca698a5f9f91b3ef6","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-07-18T13:42:20Z","title_canon_sha256":"3ad377ec9d9373edb5ef2b5a9bf337bfdc6db60ea89becc4aa6790994ee1bb4e"},"schema_version":"1.0","source":{"id":"astro-ph/0607414","kind":"arxiv","version":2}},"canonical_sha256":"4286d59edf5e96b651bcc53b0f2343dcac4676622330eb3854b0f309930bee50","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4286d59edf5e96b651bcc53b0f2343dcac4676622330eb3854b0f309930bee50","first_computed_at":"2026-05-18T01:40:30.040615Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:40:30.040615Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"zo0zQQ3Dc5D3kRlfWVAVCCk8Y9JZVUmlF0b+OIR2Pln+SUNkVxQxgHGeWOuHPIVCITJ5yA2VhZ0T7TW4+ca4Dg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:40:30.041299Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0607414","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c9851c8705c61afa2a5adb2ead54b5d67d66d69026286a027e64f70fd0a05578","sha256:62e6ff3a7c9635fa697a6f3274a475cdc4180205b72b4ab0ec4e708f63851b72"],"state_sha256":"b59e36e1b4508d9d3b5e00cb17afdc14ba1ba4b43b582611d27fd45f3215be7b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HfCgmWGnBq9E8rKn0OeZYjioB5/NWEZSpgAAU7J34aDoH3B2QR1dzJeswFWMuWnzvxaVRwaD5KjsRa6ewYiPCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T06:38:20.510056Z","bundle_sha256":"de2129f805c8a96ffe4dfe291c5d82b99859d2b1ff290b00b7b2216a244593ae"}}