{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2005:IPFIGAP3GU2P44XPVJQVGOC5LE","short_pith_number":"pith:IPFIGAP3","canonical_record":{"source":{"id":"astro-ph/0509796","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-09-27T09:04:07Z","cross_cats_sorted":[],"title_canon_sha256":"45c60167edd5f5029f5f531c343c5388f4d393b8c6501121099f82e93da47400","abstract_canon_sha256":"287b265a58f52254ca992a1417d745141b890b9cbe6fa3107ae75396affc5420"},"schema_version":"1.0"},"canonical_sha256":"43ca8301fb3534fe72efaa6153385d5935bf32d5b120a02992ef72ed2e631f63","source":{"kind":"arxiv","id":"astro-ph/0509796","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0509796","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0509796v1","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0509796","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"pith_short_12","alias_value":"IPFIGAP3GU2P","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"pith_short_16","alias_value":"IPFIGAP3GU2P44XP","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"pith_short_8","alias_value":"IPFIGAP3","created_at":"2026-07-04T17:15:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2005:IPFIGAP3GU2P44XPVJQVGOC5LE","target":"record","payload":{"canonical_record":{"source":{"id":"astro-ph/0509796","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2005-09-27T09:04:07Z","cross_cats_sorted":[],"title_canon_sha256":"45c60167edd5f5029f5f531c343c5388f4d393b8c6501121099f82e93da47400","abstract_canon_sha256":"287b265a58f52254ca992a1417d745141b890b9cbe6fa3107ae75396affc5420"},"schema_version":"1.0"},"canonical_sha256":"43ca8301fb3534fe72efaa6153385d5935bf32d5b120a02992ef72ed2e631f63","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:15:14.417970Z","signature_b64":"wvT6trgJnvc8oq/ST7BaZ513jw/VGjJsu63fZRE54JXgrGs35nOSQqcy4U62JkBnyuYIljKgUWzarMrREc5DCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"43ca8301fb3534fe72efaa6153385d5935bf32d5b120a02992ef72ed2e631f63","last_reissued_at":"2026-07-04T17:15:14.417451Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:15:14.417451Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"astro-ph/0509796","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":"2026-07-04T17:15:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KkafmRjf5U0u0vKLSm+Zy9iHEGdVIM6dApjPnDHAo7T7iRjQ+2gxahl8pAWKBL986ZkMgnsLo4JAtPE6YvmXAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T07:02:16.409521Z"},"content_sha256":"90a3ed4d87f2a39de56921cc69503ee16fff83b288f4873b3dccaa607b5a93f7","schema_version":"1.0","event_id":"sha256:90a3ed4d87f2a39de56921cc69503ee16fff83b288f4873b3dccaa607b5a93f7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2005:IPFIGAP3GU2P44XPVJQVGOC5LE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A variable Quasi-Periodic Ocillation in M82 X-1. Timing and spectral analysis of XMM-Newton and RossiXTE observations","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"L. Zampieri, P. Casella, P. Mucciarelli, P. Ranalli, T. Belloni","submitted_at":"2005-09-27T09:04:07Z","abstract_excerpt":"We report results from a spectral and timing analysis of M82 X-1, one of the brightest known ultraluminous X-ray sources. Data from a new 105 ks {\\it XMM-Newton} observation of M82 X-1, performed in April 2004, and of archival {\\it RossiXTE} observations are presented. A very soft thermal component is present in the {\\it XMM} spectrum. Although it is not possible to rule out a residual contamination from the host galaxy, modelling it with a standard accretion disk would imply a black hole mass of $\\approx 10^3 M_{\\odot}$. An emission line was also detected at an energy typical for fluorescent "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0509796","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/astro-ph/0509796/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":"2026-07-04T17:15:14Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vaRQTsX1eOPIVYmLNKZtQ3nGDQeDOObIeh/TdP6T+NEBOUP1yZIAsZC3SZ+GtC/cpUZgxYR4IRZfUIMggGbyAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T07:02:16.410413Z"},"content_sha256":"9042b0eca3969bf42ca5d828755281aeeb1756edcc627be9d444239005922c83","schema_version":"1.0","event_id":"sha256:9042b0eca3969bf42ca5d828755281aeeb1756edcc627be9d444239005922c83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IPFIGAP3GU2P44XPVJQVGOC5LE/bundle.json","state_url":"https://pith.science/pith/IPFIGAP3GU2P44XPVJQVGOC5LE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IPFIGAP3GU2P44XPVJQVGOC5LE/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":"2026-08-07T07:02:16Z","links":{"resolver":"https://pith.science/pith/IPFIGAP3GU2P44XPVJQVGOC5LE","bundle":"https://pith.science/pith/IPFIGAP3GU2P44XPVJQVGOC5LE/bundle.json","state":"https://pith.science/pith/IPFIGAP3GU2P44XPVJQVGOC5LE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IPFIGAP3GU2P44XPVJQVGOC5LE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2005:IPFIGAP3GU2P44XPVJQVGOC5LE","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":"287b265a58f52254ca992a1417d745141b890b9cbe6fa3107ae75396affc5420","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-09-27T09:04:07Z","title_canon_sha256":"45c60167edd5f5029f5f531c343c5388f4d393b8c6501121099f82e93da47400"},"schema_version":"1.0","source":{"id":"astro-ph/0509796","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"astro-ph/0509796","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"arxiv_version","alias_value":"astro-ph/0509796v1","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.astro-ph/0509796","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"pith_short_12","alias_value":"IPFIGAP3GU2P","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"pith_short_16","alias_value":"IPFIGAP3GU2P44XP","created_at":"2026-07-04T17:15:14Z"},{"alias_kind":"pith_short_8","alias_value":"IPFIGAP3","created_at":"2026-07-04T17:15:14Z"}],"graph_snapshots":[{"event_id":"sha256:9042b0eca3969bf42ca5d828755281aeeb1756edcc627be9d444239005922c83","target":"graph","created_at":"2026-07-04T17:15:14Z","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/astro-ph/0509796/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We report results from a spectral and timing analysis of M82 X-1, one of the brightest known ultraluminous X-ray sources. Data from a new 105 ks {\\it XMM-Newton} observation of M82 X-1, performed in April 2004, and of archival {\\it RossiXTE} observations are presented. A very soft thermal component is present in the {\\it XMM} spectrum. Although it is not possible to rule out a residual contamination from the host galaxy, modelling it with a standard accretion disk would imply a black hole mass of $\\approx 10^3 M_{\\odot}$. An emission line was also detected at an energy typical for fluorescent ","authors_text":"L. Zampieri, P. Casella, P. Mucciarelli, P. Ranalli, T. Belloni","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2005-09-27T09:04:07Z","title":"A variable Quasi-Periodic Ocillation in M82 X-1. Timing and spectral analysis of XMM-Newton and RossiXTE observations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"astro-ph/0509796","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":"sha256:90a3ed4d87f2a39de56921cc69503ee16fff83b288f4873b3dccaa607b5a93f7","target":"record","created_at":"2026-07-04T17:15:14Z","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":"287b265a58f52254ca992a1417d745141b890b9cbe6fa3107ae75396affc5420","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2005-09-27T09:04:07Z","title_canon_sha256":"45c60167edd5f5029f5f531c343c5388f4d393b8c6501121099f82e93da47400"},"schema_version":"1.0","source":{"id":"astro-ph/0509796","kind":"arxiv","version":1}},"canonical_sha256":"43ca8301fb3534fe72efaa6153385d5935bf32d5b120a02992ef72ed2e631f63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"43ca8301fb3534fe72efaa6153385d5935bf32d5b120a02992ef72ed2e631f63","first_computed_at":"2026-07-04T17:15:14.417451Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:15:14.417451Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wvT6trgJnvc8oq/ST7BaZ513jw/VGjJsu63fZRE54JXgrGs35nOSQqcy4U62JkBnyuYIljKgUWzarMrREc5DCA==","signature_status":"signed_v1","signed_at":"2026-07-04T17:15:14.417970Z","signed_message":"canonical_sha256_bytes"},"source_id":"astro-ph/0509796","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90a3ed4d87f2a39de56921cc69503ee16fff83b288f4873b3dccaa607b5a93f7","sha256:9042b0eca3969bf42ca5d828755281aeeb1756edcc627be9d444239005922c83"],"state_sha256":"0973fd1c91732fe84fbfcbd801a62accebcacc37302e14c610aef63c72f3f9c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qfrrNkw0ue9T5ZACCqJHFsmfGjZolMAsclX+ETdyg55U8Tu17SaqExRx5rrpusqa9Ll98yEgSKEnVF2ADDcLBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T07:02:16.416832Z","bundle_sha256":"13e68804cef6698874933f7338af15583d7ad384b2f09198649b2da9a38bc2bf"}}