{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:QX7LQTOG4TJEAWZUSNFS72OSJU","short_pith_number":"pith:QX7LQTOG","canonical_record":{"source":{"id":"1305.1302","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-05-06T20:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"52be7412c2e0d193d8a8aeeff61264524e467c931dc7aa5d0c685353e79a346c","abstract_canon_sha256":"4504e263d6cfc17e77d392fad5f43e954b28701b8529a55e58d5b5507229ad11"},"schema_version":"1.0"},"canonical_sha256":"85feb84dc6e4d2405b34934b2fe9d24d3817b81a3bef3b1f573313b9dc919343","source":{"kind":"arxiv","id":"1305.1302","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.1302","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"arxiv_version","alias_value":"1305.1302v1","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.1302","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"pith_short_12","alias_value":"QX7LQTOG4TJE","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"QX7LQTOG4TJEAWZU","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"QX7LQTOG","created_at":"2026-05-18T12:27:57Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:QX7LQTOG4TJEAWZUSNFS72OSJU","target":"record","payload":{"canonical_record":{"source":{"id":"1305.1302","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-05-06T20:00:05Z","cross_cats_sorted":[],"title_canon_sha256":"52be7412c2e0d193d8a8aeeff61264524e467c931dc7aa5d0c685353e79a346c","abstract_canon_sha256":"4504e263d6cfc17e77d392fad5f43e954b28701b8529a55e58d5b5507229ad11"},"schema_version":"1.0"},"canonical_sha256":"85feb84dc6e4d2405b34934b2fe9d24d3817b81a3bef3b1f573313b9dc919343","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:50:11.636682Z","signature_b64":"0/+c0UMtBej7q+4aQbfWSOs5Lqy6ijjOnFymby+JDvvLYynPf3CcQXHe5f0LwJIz1WYnJhFh3R4y9AmC+yeiAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"85feb84dc6e4d2405b34934b2fe9d24d3817b81a3bef3b1f573313b9dc919343","last_reissued_at":"2026-05-18T01:50:11.635482Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:50:11.635482Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1305.1302","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":"2026-05-18T01:50:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vgc0XN+77S+ZpgfkUEPv/+psP/bBsjQon7BIPAn0nIEP+lVdb8tS3WKRSg16qUmTC4Hk+ytaBo/qzEs3RLGsDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T06:01:00.276917Z"},"content_sha256":"3967040858d37708a0fea573552e28233d9c075eba245c0aaf82e95484f7dd81","schema_version":"1.0","event_id":"sha256:3967040858d37708a0fea573552e28233d9c075eba245c0aaf82e95484f7dd81"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:QX7LQTOG4TJEAWZUSNFS72OSJU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The second ULX transient in M31: Chandra, HST and XMM observations, and evidence for an extended corona","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"M. Garcia, R. Barnard, S. S. Murray","submitted_at":"2013-05-06T20:00:05Z","abstract_excerpt":"XMM J004243.6+412519 is a transient X-ray source in M31, first discovered 2012 January 15. Different approaches to fitting the brightest follow-up observation gave luminosities 1.3--2.5E+39 erg/s, making it the second ultraluminous X-ray source (ULX) in M31, with a probable black hole accretor. These different models represent different scenarios for the corona: optically thick and compact, or optically thin and extended. We obtained Chandra ACIS and {\\em HST} ACS observations of this object as part of our transient monitoring program, and also observed it serendipitously in a 120 ks XMM-Newto"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.1302","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":"2026-05-18T01:50:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"he/ELil8ijwntNBwjYXS9P1z+42ERxPD3jZzSenNJsr51c8bMp9KWjmbbiv1KFcVleH4NVnp9PnOLsPW13ACBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T06:01:00.277252Z"},"content_sha256":"8304f687933e85d5ea94f17cfed7ca415a5130ea5ba35d9afa92edfcc44a63fd","schema_version":"1.0","event_id":"sha256:8304f687933e85d5ea94f17cfed7ca415a5130ea5ba35d9afa92edfcc44a63fd"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QX7LQTOG4TJEAWZUSNFS72OSJU/bundle.json","state_url":"https://pith.science/pith/QX7LQTOG4TJEAWZUSNFS72OSJU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QX7LQTOG4TJEAWZUSNFS72OSJU/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":"2026-07-09T06:01:00Z","links":{"resolver":"https://pith.science/pith/QX7LQTOG4TJEAWZUSNFS72OSJU","bundle":"https://pith.science/pith/QX7LQTOG4TJEAWZUSNFS72OSJU/bundle.json","state":"https://pith.science/pith/QX7LQTOG4TJEAWZUSNFS72OSJU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QX7LQTOG4TJEAWZUSNFS72OSJU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:QX7LQTOG4TJEAWZUSNFS72OSJU","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":"4504e263d6cfc17e77d392fad5f43e954b28701b8529a55e58d5b5507229ad11","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-05-06T20:00:05Z","title_canon_sha256":"52be7412c2e0d193d8a8aeeff61264524e467c931dc7aa5d0c685353e79a346c"},"schema_version":"1.0","source":{"id":"1305.1302","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.1302","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"arxiv_version","alias_value":"1305.1302v1","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.1302","created_at":"2026-05-18T01:50:11Z"},{"alias_kind":"pith_short_12","alias_value":"QX7LQTOG4TJE","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"QX7LQTOG4TJEAWZU","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"QX7LQTOG","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:8304f687933e85d5ea94f17cfed7ca415a5130ea5ba35d9afa92edfcc44a63fd","target":"graph","created_at":"2026-05-18T01:50:11Z","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":"XMM J004243.6+412519 is a transient X-ray source in M31, first discovered 2012 January 15. Different approaches to fitting the brightest follow-up observation gave luminosities 1.3--2.5E+39 erg/s, making it the second ultraluminous X-ray source (ULX) in M31, with a probable black hole accretor. These different models represent different scenarios for the corona: optically thick and compact, or optically thin and extended. We obtained Chandra ACIS and {\\em HST} ACS observations of this object as part of our transient monitoring program, and also observed it serendipitously in a 120 ks XMM-Newto","authors_text":"M. Garcia, R. Barnard, S. S. Murray","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-05-06T20:00:05Z","title":"The second ULX transient in M31: Chandra, HST and XMM observations, and evidence for an extended corona"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.1302","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":"sha256:3967040858d37708a0fea573552e28233d9c075eba245c0aaf82e95484f7dd81","target":"record","created_at":"2026-05-18T01:50:11Z","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":"4504e263d6cfc17e77d392fad5f43e954b28701b8529a55e58d5b5507229ad11","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2013-05-06T20:00:05Z","title_canon_sha256":"52be7412c2e0d193d8a8aeeff61264524e467c931dc7aa5d0c685353e79a346c"},"schema_version":"1.0","source":{"id":"1305.1302","kind":"arxiv","version":1}},"canonical_sha256":"85feb84dc6e4d2405b34934b2fe9d24d3817b81a3bef3b1f573313b9dc919343","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85feb84dc6e4d2405b34934b2fe9d24d3817b81a3bef3b1f573313b9dc919343","first_computed_at":"2026-05-18T01:50:11.635482Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:50:11.635482Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0/+c0UMtBej7q+4aQbfWSOs5Lqy6ijjOnFymby+JDvvLYynPf3CcQXHe5f0LwJIz1WYnJhFh3R4y9AmC+yeiAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:50:11.636682Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.1302","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3967040858d37708a0fea573552e28233d9c075eba245c0aaf82e95484f7dd81","sha256:8304f687933e85d5ea94f17cfed7ca415a5130ea5ba35d9afa92edfcc44a63fd"],"state_sha256":"02752b813cbc7fd76161e035b5205e9a626ee1d6dbb2c6fc5fa4856800b4f5ee"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OoV+78z2IkEEovGZl+TPyKMZXEU6CLHFeXJLS2tG+B9u24HugZzv++tTLw49YEtQo+znc1jV8GLXp7fZkuRDBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T06:01:00.279449Z","bundle_sha256":"e8952cb22a9c0556543e0a4496cb8a957b3f99f0fb1279f89c2104f5a510f652"}}