{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:DMBM5GZNL4ZJGEZPRD6YNQYG6W","short_pith_number":"pith:DMBM5GZN","canonical_record":{"source":{"id":"1903.08099","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-19T16:37:47Z","cross_cats_sorted":[],"title_canon_sha256":"95be77e7759f179ae1acadaad3e588edf59d0394bc88b1ec06dbf2f4c6be3266","abstract_canon_sha256":"7d9c5b63db7e02a54705556ab8f528458c6e7bf49efec3be2d8804081b5b8375"},"schema_version":"1.0"},"canonical_sha256":"1b02ce9b2d5f3293132f88fd86c306f5ba3235db1c9b2468c89d245cf2b726be","source":{"kind":"arxiv","id":"1903.08099","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.08099","created_at":"2026-05-17T23:47:25Z"},{"alias_kind":"arxiv_version","alias_value":"1903.08099v1","created_at":"2026-05-17T23:47:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.08099","created_at":"2026-05-17T23:47:25Z"},{"alias_kind":"pith_short_12","alias_value":"DMBM5GZNL4ZJ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"DMBM5GZNL4ZJGEZP","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"DMBM5GZN","created_at":"2026-05-18T12:33:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:DMBM5GZNL4ZJGEZPRD6YNQYG6W","target":"record","payload":{"canonical_record":{"source":{"id":"1903.08099","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-19T16:37:47Z","cross_cats_sorted":[],"title_canon_sha256":"95be77e7759f179ae1acadaad3e588edf59d0394bc88b1ec06dbf2f4c6be3266","abstract_canon_sha256":"7d9c5b63db7e02a54705556ab8f528458c6e7bf49efec3be2d8804081b5b8375"},"schema_version":"1.0"},"canonical_sha256":"1b02ce9b2d5f3293132f88fd86c306f5ba3235db1c9b2468c89d245cf2b726be","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:25.198865Z","signature_b64":"5cqjSKMURNERKgx/l4069VSYR6TR8qA/nuBZPNzLsCdgRw/XEL7rQP++Z2aW77KKtqQN2bermL3QuHEaJSHwBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1b02ce9b2d5f3293132f88fd86c306f5ba3235db1c9b2468c89d245cf2b726be","last_reissued_at":"2026-05-17T23:47:25.198382Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:25.198382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.08099","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":"2026-05-17T23:47:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+pEosdpPmbGmXIArW2uNMvicr05QYZgtZHIe52O6c+x4b3n2XsNXTJ23l14q1P7wqY4WBPWIu8qv4XwfXQgIAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T14:16:52.487795Z"},"content_sha256":"aafb0bafcbfa4fa5be315e267189603247371b3a61a4938773822177e3212a75","schema_version":"1.0","event_id":"sha256:aafb0bafcbfa4fa5be315e267189603247371b3a61a4938773822177e3212a75"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:DMBM5GZNL4ZJGEZPRD6YNQYG6W","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exploring the Interstellar Medium Using an Asymmetric X-ray Dust Scattering Halo","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Chichuan Jin, David Bogensberger, Gabriele Ponti, Guangxing Li","submitted_at":"2019-03-19T16:37:47Z","abstract_excerpt":"SWIFT J1658.2-4242 is an X-ray transient discovered recently in the Galactic plane, with severe X-ray absorption corresponding to an equivalent hydrogen column density of $N_{\\rm H,abs}\\sim2\\times10^{23}$ cm$^{-2}$. Using new Chandra and XMM-Newton data, we discover a strong X-ray dust scattering halo around it. The halo profile can be well fitted by the scattering from at least three separated dust layers. During the persistent emission phase of SWIFT J1658.2-4242, the best-fit dust scattering $N_{\\rm H,sca}$ based on the COMP-AC-S dust grain model is consistent with $N_{\\rm H,abs}$. The best"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.08099","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":"2026-05-17T23:47:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uD3hM9NWftxyvkkAhObFNfHkOvug7zK/J/RfNa+qr2PyO1dWyEi+A3rrIfpU/lcVEKDIe4d6CaUBcYzZVcGwCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T14:16:52.488520Z"},"content_sha256":"0433008747375ad7f091491ba32276765872320aadc9711205870e36c08d1835","schema_version":"1.0","event_id":"sha256:0433008747375ad7f091491ba32276765872320aadc9711205870e36c08d1835"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DMBM5GZNL4ZJGEZPRD6YNQYG6W/bundle.json","state_url":"https://pith.science/pith/DMBM5GZNL4ZJGEZPRD6YNQYG6W/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DMBM5GZNL4ZJGEZPRD6YNQYG6W/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":"2026-06-07T14:16:52Z","links":{"resolver":"https://pith.science/pith/DMBM5GZNL4ZJGEZPRD6YNQYG6W","bundle":"https://pith.science/pith/DMBM5GZNL4ZJGEZPRD6YNQYG6W/bundle.json","state":"https://pith.science/pith/DMBM5GZNL4ZJGEZPRD6YNQYG6W/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DMBM5GZNL4ZJGEZPRD6YNQYG6W/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:DMBM5GZNL4ZJGEZPRD6YNQYG6W","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":"7d9c5b63db7e02a54705556ab8f528458c6e7bf49efec3be2d8804081b5b8375","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-19T16:37:47Z","title_canon_sha256":"95be77e7759f179ae1acadaad3e588edf59d0394bc88b1ec06dbf2f4c6be3266"},"schema_version":"1.0","source":{"id":"1903.08099","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.08099","created_at":"2026-05-17T23:47:25Z"},{"alias_kind":"arxiv_version","alias_value":"1903.08099v1","created_at":"2026-05-17T23:47:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.08099","created_at":"2026-05-17T23:47:25Z"},{"alias_kind":"pith_short_12","alias_value":"DMBM5GZNL4ZJ","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"DMBM5GZNL4ZJGEZP","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"DMBM5GZN","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:0433008747375ad7f091491ba32276765872320aadc9711205870e36c08d1835","target":"graph","created_at":"2026-05-17T23:47:25Z","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":"SWIFT J1658.2-4242 is an X-ray transient discovered recently in the Galactic plane, with severe X-ray absorption corresponding to an equivalent hydrogen column density of $N_{\\rm H,abs}\\sim2\\times10^{23}$ cm$^{-2}$. Using new Chandra and XMM-Newton data, we discover a strong X-ray dust scattering halo around it. The halo profile can be well fitted by the scattering from at least three separated dust layers. During the persistent emission phase of SWIFT J1658.2-4242, the best-fit dust scattering $N_{\\rm H,sca}$ based on the COMP-AC-S dust grain model is consistent with $N_{\\rm H,abs}$. The best","authors_text":"Chichuan Jin, David Bogensberger, Gabriele Ponti, Guangxing Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-19T16:37:47Z","title":"Exploring the Interstellar Medium Using an Asymmetric X-ray Dust Scattering Halo"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.08099","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:aafb0bafcbfa4fa5be315e267189603247371b3a61a4938773822177e3212a75","target":"record","created_at":"2026-05-17T23:47:25Z","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":"7d9c5b63db7e02a54705556ab8f528458c6e7bf49efec3be2d8804081b5b8375","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-03-19T16:37:47Z","title_canon_sha256":"95be77e7759f179ae1acadaad3e588edf59d0394bc88b1ec06dbf2f4c6be3266"},"schema_version":"1.0","source":{"id":"1903.08099","kind":"arxiv","version":1}},"canonical_sha256":"1b02ce9b2d5f3293132f88fd86c306f5ba3235db1c9b2468c89d245cf2b726be","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1b02ce9b2d5f3293132f88fd86c306f5ba3235db1c9b2468c89d245cf2b726be","first_computed_at":"2026-05-17T23:47:25.198382Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:25.198382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5cqjSKMURNERKgx/l4069VSYR6TR8qA/nuBZPNzLsCdgRw/XEL7rQP++Z2aW77KKtqQN2bermL3QuHEaJSHwBQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:25.198865Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.08099","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aafb0bafcbfa4fa5be315e267189603247371b3a61a4938773822177e3212a75","sha256:0433008747375ad7f091491ba32276765872320aadc9711205870e36c08d1835"],"state_sha256":"e6f50a65b6cfbb73f8484fa90b7aeec413aa8738d3195e679c72328cc64ffeb8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aV/beAlVU8fUtNM3dhUjOiA0ueZkkRuGrfbORgCBNVrOCT8M8PazB+/U0VDdaTSxCQYnrus9mjaL9eqlHWQqDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T14:16:52.493658Z","bundle_sha256":"b561ad69dcb7f458b2cb67fcaa5a6e4eb7b5378bac9e61997b214a8a2169bd88"}}