{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:GEXZ4IHZ2Z43PHANJJ3Q4CCV52","short_pith_number":"pith:GEXZ4IHZ","canonical_record":{"source":{"id":"1902.00359","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-20T21:53:42Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"15b5754265cc36e7dec33f7d404f1054046b73d98ab350126070fac35b130ef6","abstract_canon_sha256":"ee521e566ceef69a326def878b0e9c791175ba038545f0dbed2059f3597d5dc9"},"schema_version":"1.0"},"canonical_sha256":"312f9e20f9d679b79c0d4a770e0855eeb82bf51080d8f07a75b7d4996105daca","source":{"kind":"arxiv","id":"1902.00359","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.00359","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"1902.00359v1","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.00359","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"GEXZ4IHZ2Z43","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"GEXZ4IHZ2Z43PHAN","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"GEXZ4IHZ","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:GEXZ4IHZ2Z43PHANJJ3Q4CCV52","target":"record","payload":{"canonical_record":{"source":{"id":"1902.00359","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-20T21:53:42Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"15b5754265cc36e7dec33f7d404f1054046b73d98ab350126070fac35b130ef6","abstract_canon_sha256":"ee521e566ceef69a326def878b0e9c791175ba038545f0dbed2059f3597d5dc9"},"schema_version":"1.0"},"canonical_sha256":"312f9e20f9d679b79c0d4a770e0855eeb82bf51080d8f07a75b7d4996105daca","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:54:57.662663Z","signature_b64":"XCbzD4T+SGJ7H3/31O5VT8QiiOlGk3vRQ4CRguBWFxUdQhHsid/JSC4ZiuNyMq8dtH/DqNEeadmIphYM/tERCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"312f9e20f9d679b79c0d4a770e0855eeb82bf51080d8f07a75b7d4996105daca","last_reissued_at":"2026-05-17T23:54:57.662226Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:54:57.662226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.00359","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":"2026-05-17T23:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GI6GKlMogT6f/y678J+DNWvCTC9MnQGia/acJB8h6VNZNIwLMgev8GdQOCasNxYDMkwSYYPTkLkZvbLThKThAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T05:16:37.879792Z"},"content_sha256":"ac8ea5b1cb04b0bc4516bd913d62f02fb475a1d30da6506f8f3447000fb6390d","schema_version":"1.0","event_id":"sha256:ac8ea5b1cb04b0bc4516bd913d62f02fb475a1d30da6506f8f3447000fb6390d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:GEXZ4IHZ2Z43PHANJJ3Q4CCV52","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Instabilities in nonrelativistic spherically symmetric self-gravitating accretion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["gr-qc"],"primary_cat":"astro-ph.HE","authors_text":"Satadal Datta","submitted_at":"2019-01-20T21:53:42Z","abstract_excerpt":"We consider time dependent problem in perturbative approach for a nonrelativistic inviscid spherically symmetric accretion model where the effect of the gravity of the medium is considered in Newtonian gravity framework. We consider spherically symmetric nonrelativistic accretion, i.e. Bondi accretion with self-gravity. Our approach is perturbative in the linear order of perturbation regime. We introduce linear perturbation over the existing steady state solution of the system. The analysis has two features, one is that the linear perturbation in mass accretion rate in such irrotational invisc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.00359","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":"2026-05-17T23:54:57Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UWjszFpudI5j3VxwH16xv8WacI/eacrOaAzljXCGPUuAiqMJ7Vlu7MPe5ZR70HfatKDAQcDscWAmoRqyoHnvDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T05:16:37.880134Z"},"content_sha256":"1350cd1ec854f58306ee915a8e91508f4afe6e0d3ca6ca94d8c61de3d1a11bce","schema_version":"1.0","event_id":"sha256:1350cd1ec854f58306ee915a8e91508f4afe6e0d3ca6ca94d8c61de3d1a11bce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GEXZ4IHZ2Z43PHANJJ3Q4CCV52/bundle.json","state_url":"https://pith.science/pith/GEXZ4IHZ2Z43PHANJJ3Q4CCV52/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GEXZ4IHZ2Z43PHANJJ3Q4CCV52/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":"2026-06-22T05:16:37Z","links":{"resolver":"https://pith.science/pith/GEXZ4IHZ2Z43PHANJJ3Q4CCV52","bundle":"https://pith.science/pith/GEXZ4IHZ2Z43PHANJJ3Q4CCV52/bundle.json","state":"https://pith.science/pith/GEXZ4IHZ2Z43PHANJJ3Q4CCV52/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GEXZ4IHZ2Z43PHANJJ3Q4CCV52/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:GEXZ4IHZ2Z43PHANJJ3Q4CCV52","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":"ee521e566ceef69a326def878b0e9c791175ba038545f0dbed2059f3597d5dc9","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-20T21:53:42Z","title_canon_sha256":"15b5754265cc36e7dec33f7d404f1054046b73d98ab350126070fac35b130ef6"},"schema_version":"1.0","source":{"id":"1902.00359","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.00359","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"arxiv_version","alias_value":"1902.00359v1","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.00359","created_at":"2026-05-17T23:54:57Z"},{"alias_kind":"pith_short_12","alias_value":"GEXZ4IHZ2Z43","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"GEXZ4IHZ2Z43PHAN","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"GEXZ4IHZ","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:1350cd1ec854f58306ee915a8e91508f4afe6e0d3ca6ca94d8c61de3d1a11bce","target":"graph","created_at":"2026-05-17T23:54:57Z","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 consider time dependent problem in perturbative approach for a nonrelativistic inviscid spherically symmetric accretion model where the effect of the gravity of the medium is considered in Newtonian gravity framework. We consider spherically symmetric nonrelativistic accretion, i.e. Bondi accretion with self-gravity. Our approach is perturbative in the linear order of perturbation regime. We introduce linear perturbation over the existing steady state solution of the system. The analysis has two features, one is that the linear perturbation in mass accretion rate in such irrotational invisc","authors_text":"Satadal Datta","cross_cats":["gr-qc"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-20T21:53:42Z","title":"Instabilities in nonrelativistic spherically symmetric self-gravitating accretion"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.00359","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:ac8ea5b1cb04b0bc4516bd913d62f02fb475a1d30da6506f8f3447000fb6390d","target":"record","created_at":"2026-05-17T23:54:57Z","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":"ee521e566ceef69a326def878b0e9c791175ba038545f0dbed2059f3597d5dc9","cross_cats_sorted":["gr-qc"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-01-20T21:53:42Z","title_canon_sha256":"15b5754265cc36e7dec33f7d404f1054046b73d98ab350126070fac35b130ef6"},"schema_version":"1.0","source":{"id":"1902.00359","kind":"arxiv","version":1}},"canonical_sha256":"312f9e20f9d679b79c0d4a770e0855eeb82bf51080d8f07a75b7d4996105daca","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"312f9e20f9d679b79c0d4a770e0855eeb82bf51080d8f07a75b7d4996105daca","first_computed_at":"2026-05-17T23:54:57.662226Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:54:57.662226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"XCbzD4T+SGJ7H3/31O5VT8QiiOlGk3vRQ4CRguBWFxUdQhHsid/JSC4ZiuNyMq8dtH/DqNEeadmIphYM/tERCg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:54:57.662663Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.00359","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ac8ea5b1cb04b0bc4516bd913d62f02fb475a1d30da6506f8f3447000fb6390d","sha256:1350cd1ec854f58306ee915a8e91508f4afe6e0d3ca6ca94d8c61de3d1a11bce"],"state_sha256":"525e6f28a5246bc0f6ba153effd57c48b2c67ecdca5cb5df1cce493f583eb891"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aizqTh3863w63PpXfLiJMq+suRMAJCJLWeqSJauKvsHvEHY1S0Uyz1WuKcDGlmFCHukmgPUv/LVbgjh+KLM8AQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T05:16:37.882093Z","bundle_sha256":"aea6aa5b056ba6751327daa6ecf09ad60753c624ef64e476250004328f2faaa6"}}