{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:PRPFTHSPBMNKXC6DLYEYT75KSR","short_pith_number":"pith:PRPFTHSP","canonical_record":{"source":{"id":"1107.3590","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-07-18T22:28:01Z","cross_cats_sorted":[],"title_canon_sha256":"53b0398ca827a35382e6b1cd0cf4299b9972b2d57b9658e869652a08785e0743","abstract_canon_sha256":"08584bd64054fdca60811662ef0ffd4d3b4deb0b9e5082b831952edddb92f5ea"},"schema_version":"1.0"},"canonical_sha256":"7c5e599e4f0b1aab8bc35e0989ffaa946a82934a305bce841a5f1aea54a16d93","source":{"kind":"arxiv","id":"1107.3590","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.3590","created_at":"2026-05-18T02:01:15Z"},{"alias_kind":"arxiv_version","alias_value":"1107.3590v1","created_at":"2026-05-18T02:01:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.3590","created_at":"2026-05-18T02:01:15Z"},{"alias_kind":"pith_short_12","alias_value":"PRPFTHSPBMNK","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PRPFTHSPBMNKXC6D","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PRPFTHSP","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:PRPFTHSPBMNKXC6DLYEYT75KSR","target":"record","payload":{"canonical_record":{"source":{"id":"1107.3590","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-07-18T22:28:01Z","cross_cats_sorted":[],"title_canon_sha256":"53b0398ca827a35382e6b1cd0cf4299b9972b2d57b9658e869652a08785e0743","abstract_canon_sha256":"08584bd64054fdca60811662ef0ffd4d3b4deb0b9e5082b831952edddb92f5ea"},"schema_version":"1.0"},"canonical_sha256":"7c5e599e4f0b1aab8bc35e0989ffaa946a82934a305bce841a5f1aea54a16d93","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:01:15.179421Z","signature_b64":"0BVq0nN3XzySE1tcgJo3KQH+EA0gT7kRkplfgIi7BmuHlP8rYp5Uw4+9MmppQ3WMR46z0UrE7LMM91O6+k5JCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7c5e599e4f0b1aab8bc35e0989ffaa946a82934a305bce841a5f1aea54a16d93","last_reissued_at":"2026-05-18T02:01:15.178839Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:01:15.178839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1107.3590","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":"2026-05-18T02:01:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5zlJ7SnolQIXP6mZ+E1ahSpgRVKjrJ0HR4StW8nazTJ/mLwWKvWN61zh3lOSRI6ftgdmZWHaBsjrB07wosd/DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:58:21.868591Z"},"content_sha256":"e0bcc3978d3147cba3ffff46063e6b33c15d5afe1def041a9e6746f2097de94d","schema_version":"1.0","event_id":"sha256:e0bcc3978d3147cba3ffff46063e6b33c15d5afe1def041a9e6746f2097de94d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:PRPFTHSPBMNKXC6DLYEYT75KSR","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Spectral and Timing Studies of Cyg X-1 in the Low/Hard State with Suzaku","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Chris Done, Hirofumi Noda, Hiromitsu Takahashi, Kazuhiro Nakazawa, Kazuo Makishima, Poshak Gandhi, Shin'ya Yamada, Shunsuke Torii, Soki Sakurai","submitted_at":"2011-07-18T22:28:01Z","abstract_excerpt":"From 2005 to 2009, 25 observations of Cyg X-1 were performed with Suzaku, achieving a total exposure of 446 ks. In all observations, the source was found in the low/hard state, while the 1.5--12.0 keV count rate of the All-Sky Monitor onboard RXTE varied by a factor of ~ 3. In each observation, the 10--60 keV HXD-PIN spectrum and the 60--400 keV HXD-GSO spectrum were fitted successfully by a thermal Comptonization model plus reflection by a thick neutral material. As the soft X-ray intensity increased, the Compton y-parameter was found to decrease from 1.0 to 0.6, while the solid angle of refl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.3590","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":"2026-05-18T02:01:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"aak+/S2Sggxpx5Sc/vet624HeEeUZnHsT1Kzg4L7eyyzdADUxm/sJClUMTNYlpx4q+9tLZVz4YbxCwp5NkL8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T05:58:21.868924Z"},"content_sha256":"f084791a450798cc36ffa7a3fbcba90bf5547d67ab8d75613b37366bae295125","schema_version":"1.0","event_id":"sha256:f084791a450798cc36ffa7a3fbcba90bf5547d67ab8d75613b37366bae295125"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PRPFTHSPBMNKXC6DLYEYT75KSR/bundle.json","state_url":"https://pith.science/pith/PRPFTHSPBMNKXC6DLYEYT75KSR/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PRPFTHSPBMNKXC6DLYEYT75KSR/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":"2026-06-03T05:58:21Z","links":{"resolver":"https://pith.science/pith/PRPFTHSPBMNKXC6DLYEYT75KSR","bundle":"https://pith.science/pith/PRPFTHSPBMNKXC6DLYEYT75KSR/bundle.json","state":"https://pith.science/pith/PRPFTHSPBMNKXC6DLYEYT75KSR/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PRPFTHSPBMNKXC6DLYEYT75KSR/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:PRPFTHSPBMNKXC6DLYEYT75KSR","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":"08584bd64054fdca60811662ef0ffd4d3b4deb0b9e5082b831952edddb92f5ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-07-18T22:28:01Z","title_canon_sha256":"53b0398ca827a35382e6b1cd0cf4299b9972b2d57b9658e869652a08785e0743"},"schema_version":"1.0","source":{"id":"1107.3590","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1107.3590","created_at":"2026-05-18T02:01:15Z"},{"alias_kind":"arxiv_version","alias_value":"1107.3590v1","created_at":"2026-05-18T02:01:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1107.3590","created_at":"2026-05-18T02:01:15Z"},{"alias_kind":"pith_short_12","alias_value":"PRPFTHSPBMNK","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"PRPFTHSPBMNKXC6D","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"PRPFTHSP","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:f084791a450798cc36ffa7a3fbcba90bf5547d67ab8d75613b37366bae295125","target":"graph","created_at":"2026-05-18T02:01:15Z","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":"From 2005 to 2009, 25 observations of Cyg X-1 were performed with Suzaku, achieving a total exposure of 446 ks. In all observations, the source was found in the low/hard state, while the 1.5--12.0 keV count rate of the All-Sky Monitor onboard RXTE varied by a factor of ~ 3. In each observation, the 10--60 keV HXD-PIN spectrum and the 60--400 keV HXD-GSO spectrum were fitted successfully by a thermal Comptonization model plus reflection by a thick neutral material. As the soft X-ray intensity increased, the Compton y-parameter was found to decrease from 1.0 to 0.6, while the solid angle of refl","authors_text":"Chris Done, Hirofumi Noda, Hiromitsu Takahashi, Kazuhiro Nakazawa, Kazuo Makishima, Poshak Gandhi, Shin'ya Yamada, Shunsuke Torii, Soki Sakurai","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-07-18T22:28:01Z","title":"Spectral and Timing Studies of Cyg X-1 in the Low/Hard State with Suzaku"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1107.3590","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:e0bcc3978d3147cba3ffff46063e6b33c15d5afe1def041a9e6746f2097de94d","target":"record","created_at":"2026-05-18T02:01:15Z","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":"08584bd64054fdca60811662ef0ffd4d3b4deb0b9e5082b831952edddb92f5ea","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2011-07-18T22:28:01Z","title_canon_sha256":"53b0398ca827a35382e6b1cd0cf4299b9972b2d57b9658e869652a08785e0743"},"schema_version":"1.0","source":{"id":"1107.3590","kind":"arxiv","version":1}},"canonical_sha256":"7c5e599e4f0b1aab8bc35e0989ffaa946a82934a305bce841a5f1aea54a16d93","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7c5e599e4f0b1aab8bc35e0989ffaa946a82934a305bce841a5f1aea54a16d93","first_computed_at":"2026-05-18T02:01:15.178839Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:01:15.178839Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0BVq0nN3XzySE1tcgJo3KQH+EA0gT7kRkplfgIi7BmuHlP8rYp5Uw4+9MmppQ3WMR46z0UrE7LMM91O6+k5JCA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:01:15.179421Z","signed_message":"canonical_sha256_bytes"},"source_id":"1107.3590","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e0bcc3978d3147cba3ffff46063e6b33c15d5afe1def041a9e6746f2097de94d","sha256:f084791a450798cc36ffa7a3fbcba90bf5547d67ab8d75613b37366bae295125"],"state_sha256":"99c9f647b5d06c599367aa7e84503dc780ce43cf60bc58b9a027a2b514ea5b9e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2cijVOqSFNXT6PzoeIJAuXsyWa87ex99rjD/XYNBHAqBN8+plfoXqyorvnw+J7Lmwtv8O5QfUJWQzcQMYpCoCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T05:58:21.870799Z","bundle_sha256":"e9c26596ff31b7aa870136437f743afba26d94fbb24424fe155a7db33b80adb7"}}