{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:AWMUGY54Y7Q7HP7ABLPL5VB7MC","short_pith_number":"pith:AWMUGY54","canonical_record":{"source":{"id":"1408.3207","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-08-14T07:49:16Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"34fa1a0500a2e5ef45f3d2f417baaf71184f832c15f8d0878ebaa1e879799544","abstract_canon_sha256":"2123617dc404be17d5e9422cdaf0a3a58acabd16ea6ed96d71c21acf2ecd56a3"},"schema_version":"1.0"},"canonical_sha256":"05994363bcc7e1f3bfe00adebed43f60aad382667b628fc04210c56231249f3b","source":{"kind":"arxiv","id":"1408.3207","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.3207","created_at":"2026-05-18T01:42:19Z"},{"alias_kind":"arxiv_version","alias_value":"1408.3207v1","created_at":"2026-05-18T01:42:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.3207","created_at":"2026-05-18T01:42:19Z"},{"alias_kind":"pith_short_12","alias_value":"AWMUGY54Y7Q7","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"AWMUGY54Y7Q7HP7A","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"AWMUGY54","created_at":"2026-05-18T12:28:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:AWMUGY54Y7Q7HP7ABLPL5VB7MC","target":"record","payload":{"canonical_record":{"source":{"id":"1408.3207","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-08-14T07:49:16Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"34fa1a0500a2e5ef45f3d2f417baaf71184f832c15f8d0878ebaa1e879799544","abstract_canon_sha256":"2123617dc404be17d5e9422cdaf0a3a58acabd16ea6ed96d71c21acf2ecd56a3"},"schema_version":"1.0"},"canonical_sha256":"05994363bcc7e1f3bfe00adebed43f60aad382667b628fc04210c56231249f3b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:42:19.128896Z","signature_b64":"JydvfOcXHTNUhYBgX75IuKD89Uc+sO5MJTX4UIlSplj0GzxBDkisY1W3yNzCY1nUe+eHCoYc7L+1oyiwlDBhAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"05994363bcc7e1f3bfe00adebed43f60aad382667b628fc04210c56231249f3b","last_reissued_at":"2026-05-18T01:42:19.128304Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:42:19.128304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1408.3207","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":"2026-05-18T01:42:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"icHq48RUbufcI3LQzVwpUKE/PnoCZiZaXJt607SozNfZhmzlL5DxIVggmsA3qm6oJ057j9v32LQTurgCusYqBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:51:21.841152Z"},"content_sha256":"397f933ad14b4f00219640ca9b255b136bda0d14102c17b94ece97f491bdb628","schema_version":"1.0","event_id":"sha256:397f933ad14b4f00219640ca9b255b136bda0d14102c17b94ece97f491bdb628"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:AWMUGY54Y7Q7HP7ABLPL5VB7MC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectral Modeling of the Charge-Exchange X-ray Emission from M82","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Adam R. Foster, Li Ji, Q. Daniel Wang, Randall K. Smith, Shuinai Zhang, Xin Zhou","submitted_at":"2014-08-14T07:49:16Z","abstract_excerpt":"It has been proposed that the charge exchange (CX) process at the interface between hot and cool interstellar gases could contribute significantly to the observed soft X-ray emission in star forming galaxies. We analyze the XMM-Newton/RGS spectrum of M82, using a newly developed CX model combined with a single-temperature thermal plasma to characterize the volume-filling hot gas. The CX process is largely responsible for not only the strongly enhanced forbidden lines of the K$\\alpha$ triplets of various He-like ions, but also good fractions of the Ly$\\alpha$ transitions of C VI (~87%), O VIII "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.3207","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":"2026-05-18T01:42:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MfryhFqGtguIiEE7y/aRRu9W/K3PiDgw4nfZFkv8F1yz2FexrKSv2rtJl4s3JywxOTZ3G0ZaYbMSMsTBAdcEDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T21:51:21.841815Z"},"content_sha256":"ffab9aa514f4f40b33799e9e34adfaf8b5e0c1691ad20d2ccc0924b4b19af61e","schema_version":"1.0","event_id":"sha256:ffab9aa514f4f40b33799e9e34adfaf8b5e0c1691ad20d2ccc0924b4b19af61e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AWMUGY54Y7Q7HP7ABLPL5VB7MC/bundle.json","state_url":"https://pith.science/pith/AWMUGY54Y7Q7HP7ABLPL5VB7MC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AWMUGY54Y7Q7HP7ABLPL5VB7MC/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":"2026-05-27T21:51:21Z","links":{"resolver":"https://pith.science/pith/AWMUGY54Y7Q7HP7ABLPL5VB7MC","bundle":"https://pith.science/pith/AWMUGY54Y7Q7HP7ABLPL5VB7MC/bundle.json","state":"https://pith.science/pith/AWMUGY54Y7Q7HP7ABLPL5VB7MC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AWMUGY54Y7Q7HP7ABLPL5VB7MC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:AWMUGY54Y7Q7HP7ABLPL5VB7MC","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":"2123617dc404be17d5e9422cdaf0a3a58acabd16ea6ed96d71c21acf2ecd56a3","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-08-14T07:49:16Z","title_canon_sha256":"34fa1a0500a2e5ef45f3d2f417baaf71184f832c15f8d0878ebaa1e879799544"},"schema_version":"1.0","source":{"id":"1408.3207","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1408.3207","created_at":"2026-05-18T01:42:19Z"},{"alias_kind":"arxiv_version","alias_value":"1408.3207v1","created_at":"2026-05-18T01:42:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1408.3207","created_at":"2026-05-18T01:42:19Z"},{"alias_kind":"pith_short_12","alias_value":"AWMUGY54Y7Q7","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_16","alias_value":"AWMUGY54Y7Q7HP7A","created_at":"2026-05-18T12:28:19Z"},{"alias_kind":"pith_short_8","alias_value":"AWMUGY54","created_at":"2026-05-18T12:28:19Z"}],"graph_snapshots":[{"event_id":"sha256:ffab9aa514f4f40b33799e9e34adfaf8b5e0c1691ad20d2ccc0924b4b19af61e","target":"graph","created_at":"2026-05-18T01:42:19Z","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":"It has been proposed that the charge exchange (CX) process at the interface between hot and cool interstellar gases could contribute significantly to the observed soft X-ray emission in star forming galaxies. We analyze the XMM-Newton/RGS spectrum of M82, using a newly developed CX model combined with a single-temperature thermal plasma to characterize the volume-filling hot gas. The CX process is largely responsible for not only the strongly enhanced forbidden lines of the K$\\alpha$ triplets of various He-like ions, but also good fractions of the Ly$\\alpha$ transitions of C VI (~87%), O VIII ","authors_text":"Adam R. Foster, Li Ji, Q. Daniel Wang, Randall K. Smith, Shuinai Zhang, Xin Zhou","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-08-14T07:49:16Z","title":"Spectral Modeling of the Charge-Exchange X-ray Emission from M82"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1408.3207","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":"sha256:397f933ad14b4f00219640ca9b255b136bda0d14102c17b94ece97f491bdb628","target":"record","created_at":"2026-05-18T01:42:19Z","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":"2123617dc404be17d5e9422cdaf0a3a58acabd16ea6ed96d71c21acf2ecd56a3","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-08-14T07:49:16Z","title_canon_sha256":"34fa1a0500a2e5ef45f3d2f417baaf71184f832c15f8d0878ebaa1e879799544"},"schema_version":"1.0","source":{"id":"1408.3207","kind":"arxiv","version":1}},"canonical_sha256":"05994363bcc7e1f3bfe00adebed43f60aad382667b628fc04210c56231249f3b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"05994363bcc7e1f3bfe00adebed43f60aad382667b628fc04210c56231249f3b","first_computed_at":"2026-05-18T01:42:19.128304Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:42:19.128304Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JydvfOcXHTNUhYBgX75IuKD89Uc+sO5MJTX4UIlSplj0GzxBDkisY1W3yNzCY1nUe+eHCoYc7L+1oyiwlDBhAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:42:19.128896Z","signed_message":"canonical_sha256_bytes"},"source_id":"1408.3207","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:397f933ad14b4f00219640ca9b255b136bda0d14102c17b94ece97f491bdb628","sha256:ffab9aa514f4f40b33799e9e34adfaf8b5e0c1691ad20d2ccc0924b4b19af61e"],"state_sha256":"1e9105b8a8f0114c2fb9998a34b9ea62d95c60dabbc995d3ad88cf50cf8cd502"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0l7cB8r1saIthF77zmSI87i0aFejC2NewH9dqlMvQun1ySJzHc2SN5X4b6IH9cCRCzfmMr5zYbCB2lO3OvsdBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T21:51:21.845445Z","bundle_sha256":"ebad4ce45d17272b85024f2d8d212abb3f2b34926c7150ce2007c75dd4cd7073"}}