{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2006:D2CGQZRSN7EKIE3EZ522NYU7MA","short_pith_number":"pith:D2CGQZRS","canonical_record":{"source":{"id":"astro-ph/0604583","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-04-27T20:35:41Z","cross_cats_sorted":[],"title_canon_sha256":"93eda0e801cf0d6503546bfb981df1e170411d9eb698dbde86ac3bda33bcc01f","abstract_canon_sha256":"5cb2f1885adb599e534c23e0353d0e12b98a3d0534e1429fde6487a46309ed7b"},"schema_version":"1.0"},"canonical_sha256":"1e846866326fc8a41364cf75a6e29f603f407204b8c31469ff28f2f03a841a52","source":{"kind":"arxiv","id":"astro-ph/0604583","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0604583","created_at":"2026-05-18T04:29:04Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0604583v2","created_at":"2026-05-18T04:29:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0604583","created_at":"2026-05-18T04:29:04Z"},{"alias_kind":"pith_short_12","alias_value":"D2CGQZRSN7EK","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"D2CGQZRSN7EKIE3E","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"D2CGQZRS","created_at":"2026-05-18T12:25:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2006:D2CGQZRSN7EKIE3EZ522NYU7MA","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0604583","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2006-04-27T20:35:41Z","cross_cats_sorted":[],"title_canon_sha256":"93eda0e801cf0d6503546bfb981df1e170411d9eb698dbde86ac3bda33bcc01f","abstract_canon_sha256":"5cb2f1885adb599e534c23e0353d0e12b98a3d0534e1429fde6487a46309ed7b"},"schema_version":"1.0"},"canonical_sha256":"1e846866326fc8a41364cf75a6e29f603f407204b8c31469ff28f2f03a841a52","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:04.814294Z","signature_b64":"ior2NtUaqCg3JoezL/hfRF7uzytUadHpzkGhuqmAbr/BCY8PRKTShNYjiMRn82pIyXuWJlpynJY9AabO/3cwBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1e846866326fc8a41364cf75a6e29f603f407204b8c31469ff28f2f03a841a52","last_reissued_at":"2026-05-18T04:29:04.813935Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:04.813935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0604583","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":"2026-05-18T04:29:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0NExQigDyGyqHnR88vRHqlNvyamEOc4cF6nLD7kZr9Vf1qsPigpsM+m4Pl4+PvYvilCS4GiSpOKZQsvN9fZCDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:04:17.479023Z"},"content_sha256":"195272098f84dfc35018667aae12d7b27de424b29cb7eb3dd2a10a2019c0b379","schema_version":"1.0","event_id":"sha256:195272098f84dfc35018667aae12d7b27de424b29cb7eb3dd2a10a2019c0b379"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2006:D2CGQZRSN7EKIE3EZ522NYU7MA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Filaments, Bubbles, and Weak Shocks in the Gaseous Atmosphere of M87","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"A. Vikhlinin, C. Jones, E.Churazov, F. Owen, H. Bohringer, J. Eilek, M. Begelman, M. Markevitch, M. Pahre, P. Nulsen, R. Kraft, S. Heinz, W. Forman","submitted_at":"2006-04-27T20:35:41Z","abstract_excerpt":"We present the first results from a 500 ksec Chandra ACIS-I observation of M87. At soft energies (0.5-1.0 keV), we detect filamentary structures associated with the eastern and southwestern X-ray and radio arms. Many filaments are spatially resolved with widths of ~300 pc. This filamentary structure is particularly striking in the eastern arm where we suggest the filaments are outer edges of a series of plasma-filled, buoyant bubbles whose ages differ by ~6 x 10^6 years. These X-ray structures may be influenced by magnetic filamentation. At hard energies (3.5-7.5 keV), we detect a nearly circu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0604583","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":"2026-05-18T04:29:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KZsOVXSuskvPOxN2FGv4X0wN1b6tCWa+/n5qiP0MQv5efsKcwbl/BjHaCvahdRFQoHeEIuSbyInsWBgAdSluDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T17:04:17.479500Z"},"content_sha256":"9b5d1b511824477702a86ac037b5bf453d21db237a03637bc9554a04556d8c7a","schema_version":"1.0","event_id":"sha256:9b5d1b511824477702a86ac037b5bf453d21db237a03637bc9554a04556d8c7a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/D2CGQZRSN7EKIE3EZ522NYU7MA/bundle.json","state_url":"https://pith.science/pith/D2CGQZRSN7EKIE3EZ522NYU7MA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/D2CGQZRSN7EKIE3EZ522NYU7MA/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":"2026-05-25T17:04:17Z","links":{"resolver":"https://pith.science/pith/D2CGQZRSN7EKIE3EZ522NYU7MA","bundle":"https://pith.science/pith/D2CGQZRSN7EKIE3EZ522NYU7MA/bundle.json","state":"https://pith.science/pith/D2CGQZRSN7EKIE3EZ522NYU7MA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/D2CGQZRSN7EKIE3EZ522NYU7MA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:D2CGQZRSN7EKIE3EZ522NYU7MA","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":"5cb2f1885adb599e534c23e0353d0e12b98a3d0534e1429fde6487a46309ed7b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-04-27T20:35:41Z","title_canon_sha256":"93eda0e801cf0d6503546bfb981df1e170411d9eb698dbde86ac3bda33bcc01f"},"schema_version":"1.0","source":{"id":"astro-ph/0604583","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0604583","created_at":"2026-05-18T04:29:04Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0604583v2","created_at":"2026-05-18T04:29:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0604583","created_at":"2026-05-18T04:29:04Z"},{"alias_kind":"pith_short_12","alias_value":"D2CGQZRSN7EK","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"D2CGQZRSN7EKIE3E","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"D2CGQZRS","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:9b5d1b511824477702a86ac037b5bf453d21db237a03637bc9554a04556d8c7a","target":"graph","created_at":"2026-05-18T04:29:04Z","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 present the first results from a 500 ksec Chandra ACIS-I observation of M87. At soft energies (0.5-1.0 keV), we detect filamentary structures associated with the eastern and southwestern X-ray and radio arms. Many filaments are spatially resolved with widths of ~300 pc. This filamentary structure is particularly striking in the eastern arm where we suggest the filaments are outer edges of a series of plasma-filled, buoyant bubbles whose ages differ by ~6 x 10^6 years. These X-ray structures may be influenced by magnetic filamentation. At hard energies (3.5-7.5 keV), we detect a nearly circu","authors_text":"A. Vikhlinin, C. Jones, E.Churazov, F. Owen, H. Bohringer, J. Eilek, M. Begelman, M. Markevitch, M. Pahre, P. Nulsen, R. Kraft, S. Heinz, W. Forman","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2006-04-27T20:35:41Z","title":"Filaments, Bubbles, and Weak Shocks in the Gaseous Atmosphere of M87"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0604583","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":"sha256:195272098f84dfc35018667aae12d7b27de424b29cb7eb3dd2a10a2019c0b379","target":"record","created_at":"2026-05-18T04:29:04Z","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":"5cb2f1885adb599e534c23e0353d0e12b98a3d0534e1429fde6487a46309ed7b","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2006-04-27T20:35:41Z","title_canon_sha256":"93eda0e801cf0d6503546bfb981df1e170411d9eb698dbde86ac3bda33bcc01f"},"schema_version":"1.0","source":{"id":"astro-ph/0604583","kind":"arxiv","version":2}},"canonical_sha256":"1e846866326fc8a41364cf75a6e29f603f407204b8c31469ff28f2f03a841a52","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1e846866326fc8a41364cf75a6e29f603f407204b8c31469ff28f2f03a841a52","first_computed_at":"2026-05-18T04:29:04.813935Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:04.813935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ior2NtUaqCg3JoezL/hfRF7uzytUadHpzkGhuqmAbr/BCY8PRKTShNYjiMRn82pIyXuWJlpynJY9AabO/3cwBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:04.814294Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0604583","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:195272098f84dfc35018667aae12d7b27de424b29cb7eb3dd2a10a2019c0b379","sha256:9b5d1b511824477702a86ac037b5bf453d21db237a03637bc9554a04556d8c7a"],"state_sha256":"511e2d88796d2d43765e685f61db6e514ba7baf2fcab6592a71c702f07f4ad91"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"E+zL5oKUWz0l/KDC9ThEIrSq0pRPP0he1RTPyazC843Zd/U4/QWZRrKnDg5JyTA06XudoMf3BPzWd7oy/rMQCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T17:04:17.482858Z","bundle_sha256":"1fb54b5b638a92f0a50c59845f5723cd8dbc0dcdaa2f00fe1acc926537580dfd"}}