{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:AKUBGRJUY7CWCKVCDB7BKXQ554","short_pith_number":"pith:AKUBGRJU","canonical_record":{"source":{"id":"1011.5052","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-23T10:40:03Z","cross_cats_sorted":[],"title_canon_sha256":"dcac3a1b23b10221921028050953a38cbe063038bf119994d8b0d70005dbd095","abstract_canon_sha256":"89f4d4664e816a80a2439f52c4f8b8dce7ca14aebece302422847ea1a2db67ee"},"schema_version":"1.0"},"canonical_sha256":"02a8134534c7c5612aa2187e155e1def0652bfe33375e718590f70c613825e08","source":{"kind":"arxiv","id":"1011.5052","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.5052","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"arxiv_version","alias_value":"1011.5052v1","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.5052","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"pith_short_12","alias_value":"AKUBGRJUY7CW","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"AKUBGRJUY7CWCKVC","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"AKUBGRJU","created_at":"2026-05-18T12:26:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:AKUBGRJUY7CWCKVCDB7BKXQ554","target":"record","payload":{"canonical_record":{"source":{"id":"1011.5052","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-23T10:40:03Z","cross_cats_sorted":[],"title_canon_sha256":"dcac3a1b23b10221921028050953a38cbe063038bf119994d8b0d70005dbd095","abstract_canon_sha256":"89f4d4664e816a80a2439f52c4f8b8dce7ca14aebece302422847ea1a2db67ee"},"schema_version":"1.0"},"canonical_sha256":"02a8134534c7c5612aa2187e155e1def0652bfe33375e718590f70c613825e08","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:41.979330Z","signature_b64":"D6fScfBeGsKC6z6jqKxE7cW7nAwCs/GK7lfgOgtY8QJ6PdM30TmwVJ+Y0Kv2vNsiroMzoH8qjb0Dlt+xWFljCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"02a8134534c7c5612aa2187e155e1def0652bfe33375e718590f70c613825e08","last_reissued_at":"2026-05-18T02:04:41.978515Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:41.978515Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1011.5052","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":"2026-05-18T02:04:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TEEev6KHLNan31Xx0rc6yRqWAcOhfMD16as83rEwbB6roazlBgOE6UZQMYzsM6McJ17/PXylpZlNI6GGrHg6Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T22:21:03.314208Z"},"content_sha256":"abb06866a45ab785b5728d8e52618899064a147db883ba0985ff72e180e3ede6","schema_version":"1.0","event_id":"sha256:abb06866a45ab785b5728d8e52618899064a147db883ba0985ff72e180e3ede6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:AKUBGRJUY7CWCKVCDB7BKXQ554","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"4U 1909+07: a well-hidden pearl","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"(2) Center for Astrophysics & Space Sciences, (3) CRESST, 4) ((1) Dr. Karl Remeis-Sternwarte, (4) Center for Space Science, Baltimore, Bamberg, CA, ECAP, F. Fuerst (1), Germany, Greenbelt, I. Kreykenbohm (1), J. Wilms (1), K. Pottschmidt (3, La Jolla, L. Barragan (1), MD, NASA Goddard Space Flight Center, R. E. Rothschild (2), S. Suchy (2), Technology, UCSD, UMBC, USA, USA)","submitted_at":"2010-11-23T10:40:03Z","abstract_excerpt":"We present the first detailed spectral and timing analysis of the High Mass X-ray Binary (HMXB) 4U 1909+07 with INTEGRAL and RXTE. 4U 1909+07 is detected in the ISGRI 20-40 keV energy band with an average countrate of 2.6 cps. The pulse period of ~604 sec is not stable, but changing erratically on timescales of years. The pulse profile is strongly energy dependent: it shows a double peaked structure at low energies, the secondary pulse decreases rapidly with increasing energy and above 20 keV only the primary pulse is visible. This evolution is consistent between PCA, HEXTE, and ISGRI. The pha"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.5052","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":"2026-05-18T02:04:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aGrUQAn3OY0uDLuDjDnVTxBlrqPULTGBFeLm+MW2emv2Kj0yP6JN5eAP2j1mQNFK9ccXWZfH38JSLB0FU6A8DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T22:21:03.314913Z"},"content_sha256":"260a7f322c8a14e3c99cdc7ea003db977fbd45ef86b4e125903af39fff114f5a","schema_version":"1.0","event_id":"sha256:260a7f322c8a14e3c99cdc7ea003db977fbd45ef86b4e125903af39fff114f5a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AKUBGRJUY7CWCKVCDB7BKXQ554/bundle.json","state_url":"https://pith.science/pith/AKUBGRJUY7CWCKVCDB7BKXQ554/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AKUBGRJUY7CWCKVCDB7BKXQ554/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":"2026-05-20T22:21:03Z","links":{"resolver":"https://pith.science/pith/AKUBGRJUY7CWCKVCDB7BKXQ554","bundle":"https://pith.science/pith/AKUBGRJUY7CWCKVCDB7BKXQ554/bundle.json","state":"https://pith.science/pith/AKUBGRJUY7CWCKVCDB7BKXQ554/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AKUBGRJUY7CWCKVCDB7BKXQ554/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:AKUBGRJUY7CWCKVCDB7BKXQ554","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":"89f4d4664e816a80a2439f52c4f8b8dce7ca14aebece302422847ea1a2db67ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-23T10:40:03Z","title_canon_sha256":"dcac3a1b23b10221921028050953a38cbe063038bf119994d8b0d70005dbd095"},"schema_version":"1.0","source":{"id":"1011.5052","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1011.5052","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"arxiv_version","alias_value":"1011.5052v1","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1011.5052","created_at":"2026-05-18T02:04:41Z"},{"alias_kind":"pith_short_12","alias_value":"AKUBGRJUY7CW","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_16","alias_value":"AKUBGRJUY7CWCKVC","created_at":"2026-05-18T12:26:05Z"},{"alias_kind":"pith_short_8","alias_value":"AKUBGRJU","created_at":"2026-05-18T12:26:05Z"}],"graph_snapshots":[{"event_id":"sha256:260a7f322c8a14e3c99cdc7ea003db977fbd45ef86b4e125903af39fff114f5a","target":"graph","created_at":"2026-05-18T02:04:41Z","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 the first detailed spectral and timing analysis of the High Mass X-ray Binary (HMXB) 4U 1909+07 with INTEGRAL and RXTE. 4U 1909+07 is detected in the ISGRI 20-40 keV energy band with an average countrate of 2.6 cps. The pulse period of ~604 sec is not stable, but changing erratically on timescales of years. The pulse profile is strongly energy dependent: it shows a double peaked structure at low energies, the secondary pulse decreases rapidly with increasing energy and above 20 keV only the primary pulse is visible. This evolution is consistent between PCA, HEXTE, and ISGRI. The pha","authors_text":"(2) Center for Astrophysics & Space Sciences, (3) CRESST, 4) ((1) Dr. Karl Remeis-Sternwarte, (4) Center for Space Science, Baltimore, Bamberg, CA, ECAP, F. Fuerst (1), Germany, Greenbelt, I. Kreykenbohm (1), J. Wilms (1), K. Pottschmidt (3, La Jolla, L. Barragan (1), MD, NASA Goddard Space Flight Center, R. E. Rothschild (2), S. Suchy (2), Technology, UCSD, UMBC, USA, USA)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-23T10:40:03Z","title":"4U 1909+07: a well-hidden pearl"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.5052","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:abb06866a45ab785b5728d8e52618899064a147db883ba0985ff72e180e3ede6","target":"record","created_at":"2026-05-18T02:04:41Z","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":"89f4d4664e816a80a2439f52c4f8b8dce7ca14aebece302422847ea1a2db67ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2010-11-23T10:40:03Z","title_canon_sha256":"dcac3a1b23b10221921028050953a38cbe063038bf119994d8b0d70005dbd095"},"schema_version":"1.0","source":{"id":"1011.5052","kind":"arxiv","version":1}},"canonical_sha256":"02a8134534c7c5612aa2187e155e1def0652bfe33375e718590f70c613825e08","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"02a8134534c7c5612aa2187e155e1def0652bfe33375e718590f70c613825e08","first_computed_at":"2026-05-18T02:04:41.978515Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:41.978515Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"D6fScfBeGsKC6z6jqKxE7cW7nAwCs/GK7lfgOgtY8QJ6PdM30TmwVJ+Y0Kv2vNsiroMzoH8qjb0Dlt+xWFljCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:41.979330Z","signed_message":"canonical_sha256_bytes"},"source_id":"1011.5052","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:abb06866a45ab785b5728d8e52618899064a147db883ba0985ff72e180e3ede6","sha256:260a7f322c8a14e3c99cdc7ea003db977fbd45ef86b4e125903af39fff114f5a"],"state_sha256":"d05feafac27def6ae3198156ecc63b9cc7c1245ceb97b52a26ecb74c0c50588b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"D6DiRsGsMZVfynh1cVH7198udWZIaPpejCST6DyYyMc9rQibCStOkaNZa7Fw23fIMeuszuufT3NWBMAv+AaXCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T22:21:03.318521Z","bundle_sha256":"c7d3e193a43007cb21bfb99cd25d205117fa7db7daccb25979e365c6fe52fa92"}}