{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:CE7FTNT6BEBFVR3MM7POSWMCHV","short_pith_number":"pith:CE7FTNT6","canonical_record":{"source":{"id":"1010.5675","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-27T13:09:59Z","cross_cats_sorted":[],"title_canon_sha256":"de6af203d7a5497b8e57b15aaa942aa06acbfc560885841f382c564fab9dc661","abstract_canon_sha256":"a03fa90f2c1e122dbe134ffda89fd2b0e3a5dc5eee7e09f31b4340dfbcf3281b"},"schema_version":"1.0"},"canonical_sha256":"113e59b67e09025ac76c67dee959823d758a4c15dc1fea2bc96e1eba07bf25b7","source":{"kind":"arxiv","id":"1010.5675","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.5675","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"arxiv_version","alias_value":"1010.5675v1","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.5675","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"pith_short_12","alias_value":"CE7FTNT6BEBF","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"CE7FTNT6BEBFVR3M","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"CE7FTNT6","created_at":"2026-05-18T12:26:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:CE7FTNT6BEBFVR3MM7POSWMCHV","target":"record","payload":{"canonical_record":{"source":{"id":"1010.5675","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-27T13:09:59Z","cross_cats_sorted":[],"title_canon_sha256":"de6af203d7a5497b8e57b15aaa942aa06acbfc560885841f382c564fab9dc661","abstract_canon_sha256":"a03fa90f2c1e122dbe134ffda89fd2b0e3a5dc5eee7e09f31b4340dfbcf3281b"},"schema_version":"1.0"},"canonical_sha256":"113e59b67e09025ac76c67dee959823d758a4c15dc1fea2bc96e1eba07bf25b7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:55.852153Z","signature_b64":"sjXd71A/vgx166ccOtUaajezReJ2jQLZZSiBemce1gagyS0pPdh/qeuNIqXHxl9fHo7fZW/0YlTnWJZpZRGTDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"113e59b67e09025ac76c67dee959823d758a4c15dc1fea2bc96e1eba07bf25b7","last_reissued_at":"2026-05-18T02:04:55.851668Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:55.851668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1010.5675","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":"2026-05-18T02:04:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"glajBqwanA1s050OIORVPU9pXENedSkuyg2UeU5euSByT3Q7MtPuhig5UG0EPYWKhVcopxI7FPcHz8FmFUh2DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:06:03.242773Z"},"content_sha256":"e645fa192016144e2e12ed4af92f8e89bfb91401092d7fb3d44ee6061e44ea26","schema_version":"1.0","event_id":"sha256:e645fa192016144e2e12ed4af92f8e89bfb91401092d7fb3d44ee6061e44ea26"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:CE7FTNT6BEBFVR3MM7POSWMCHV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The population of ULXs in the spiral galaxy NGC 2276","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"(2) Universita' Milano-Bicocca, Anna Wolter (1), Emanuele Ripamonti (2) ((1) INAF-OABrera, Fabio Pizzolato (1), Italy, Italy), Michela Mapelli (2), Milano, Stefano Rota (2)","submitted_at":"2010-10-27T13:09:59Z","abstract_excerpt":"We present results for X-ray point sources in the Sc galaxy NGC 2276, obtained by analyzing Chandra data. The galaxy is known to be very active in many wavelengths, possibly due to gravitational interaction with the central elliptical of the group, NGC 2300. However, previous XMM-Newton observations resulted in the detection of only one bright ULX and extended hot gas emission. We present here the X-ray population in NGC 2276 which comprises 17 sources. We found that 6 of them are new ULX sources in this spiral galaxy resolved for the first time by Chandra. We constructed the Luminosity Functi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.5675","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":"2026-05-18T02:04:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nz3calgifI2TNcS95MbIonoenbBXrOXuwipN/mlvkFuVxRE5hzLwJ3XnhO+XIE+2usFWmnoKgNHIj8Xp3phIAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T19:06:03.243476Z"},"content_sha256":"6fa1bbc1983bacc3d21aafd0918c03afbd46adfff5ea15985cffaa35b45cd6a0","schema_version":"1.0","event_id":"sha256:6fa1bbc1983bacc3d21aafd0918c03afbd46adfff5ea15985cffaa35b45cd6a0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CE7FTNT6BEBFVR3MM7POSWMCHV/bundle.json","state_url":"https://pith.science/pith/CE7FTNT6BEBFVR3MM7POSWMCHV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CE7FTNT6BEBFVR3MM7POSWMCHV/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":"2026-05-28T19:06:03Z","links":{"resolver":"https://pith.science/pith/CE7FTNT6BEBFVR3MM7POSWMCHV","bundle":"https://pith.science/pith/CE7FTNT6BEBFVR3MM7POSWMCHV/bundle.json","state":"https://pith.science/pith/CE7FTNT6BEBFVR3MM7POSWMCHV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CE7FTNT6BEBFVR3MM7POSWMCHV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:CE7FTNT6BEBFVR3MM7POSWMCHV","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":"a03fa90f2c1e122dbe134ffda89fd2b0e3a5dc5eee7e09f31b4340dfbcf3281b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-27T13:09:59Z","title_canon_sha256":"de6af203d7a5497b8e57b15aaa942aa06acbfc560885841f382c564fab9dc661"},"schema_version":"1.0","source":{"id":"1010.5675","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1010.5675","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"arxiv_version","alias_value":"1010.5675v1","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.5675","created_at":"2026-05-18T02:04:55Z"},{"alias_kind":"pith_short_12","alias_value":"CE7FTNT6BEBF","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"CE7FTNT6BEBFVR3M","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"CE7FTNT6","created_at":"2026-05-18T12:26:05Z"}],"graph_snapshots":[{"event_id":"sha256:6fa1bbc1983bacc3d21aafd0918c03afbd46adfff5ea15985cffaa35b45cd6a0","target":"graph","created_at":"2026-05-18T02:04:55Z","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 results for X-ray point sources in the Sc galaxy NGC 2276, obtained by analyzing Chandra data. The galaxy is known to be very active in many wavelengths, possibly due to gravitational interaction with the central elliptical of the group, NGC 2300. However, previous XMM-Newton observations resulted in the detection of only one bright ULX and extended hot gas emission. We present here the X-ray population in NGC 2276 which comprises 17 sources. We found that 6 of them are new ULX sources in this spiral galaxy resolved for the first time by Chandra. We constructed the Luminosity Functi","authors_text":"(2) Universita' Milano-Bicocca, Anna Wolter (1), Emanuele Ripamonti (2) ((1) INAF-OABrera, Fabio Pizzolato (1), Italy, Italy), Michela Mapelli (2), Milano, Stefano Rota (2)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-27T13:09:59Z","title":"The population of ULXs in the spiral galaxy NGC 2276"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.5675","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:e645fa192016144e2e12ed4af92f8e89bfb91401092d7fb3d44ee6061e44ea26","target":"record","created_at":"2026-05-18T02:04:55Z","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":"a03fa90f2c1e122dbe134ffda89fd2b0e3a5dc5eee7e09f31b4340dfbcf3281b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-27T13:09:59Z","title_canon_sha256":"de6af203d7a5497b8e57b15aaa942aa06acbfc560885841f382c564fab9dc661"},"schema_version":"1.0","source":{"id":"1010.5675","kind":"arxiv","version":1}},"canonical_sha256":"113e59b67e09025ac76c67dee959823d758a4c15dc1fea2bc96e1eba07bf25b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"113e59b67e09025ac76c67dee959823d758a4c15dc1fea2bc96e1eba07bf25b7","first_computed_at":"2026-05-18T02:04:55.851668Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:55.851668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sjXd71A/vgx166ccOtUaajezReJ2jQLZZSiBemce1gagyS0pPdh/qeuNIqXHxl9fHo7fZW/0YlTnWJZpZRGTDA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:55.852153Z","signed_message":"canonical_sha256_bytes"},"source_id":"1010.5675","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e645fa192016144e2e12ed4af92f8e89bfb91401092d7fb3d44ee6061e44ea26","sha256:6fa1bbc1983bacc3d21aafd0918c03afbd46adfff5ea15985cffaa35b45cd6a0"],"state_sha256":"db8ebe16423e9b00fdb9f7f52adfb78881f38a3e5d161e9fdf501f5e8d098de5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xAYH1lZbzkYyyDzQ30z3iOHc+uZRl9PEtm1xmgsnGwtrB87hmuGPvKAvkzkggcTbrQYFiny6/un2IXTdN5AUCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T19:06:03.247126Z","bundle_sha256":"db6eab1ac136961d927f8159def0eab8f80f885a334d234b72110a20ffdf1cf9"}}