{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:MKHNFMMBIHXHKGBGXX2NWRWAW7","short_pith_number":"pith:MKHNFMMB","canonical_record":{"source":{"id":"1208.0113","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-01T06:24:15Z","cross_cats_sorted":[],"title_canon_sha256":"87a283ced11d6f22f03a04deda393f7a99b55cf790ff74d35ddd1ce39f0d957b","abstract_canon_sha256":"8f1de1273f146daf3c4c9199433ddd56764c2185d73ee6c8c88c0ec64a908479"},"schema_version":"1.0"},"canonical_sha256":"628ed2b18141ee751826bdf4db46c0b7ef64f5ea890c10be2ecfafbcbcf928e7","source":{"kind":"arxiv","id":"1208.0113","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0113","created_at":"2026-05-18T01:56:00Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0113v1","created_at":"2026-05-18T01:56:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0113","created_at":"2026-05-18T01:56:00Z"},{"alias_kind":"pith_short_12","alias_value":"MKHNFMMBIHXH","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MKHNFMMBIHXHKGBG","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MKHNFMMB","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:MKHNFMMBIHXHKGBGXX2NWRWAW7","target":"record","payload":{"canonical_record":{"source":{"id":"1208.0113","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-01T06:24:15Z","cross_cats_sorted":[],"title_canon_sha256":"87a283ced11d6f22f03a04deda393f7a99b55cf790ff74d35ddd1ce39f0d957b","abstract_canon_sha256":"8f1de1273f146daf3c4c9199433ddd56764c2185d73ee6c8c88c0ec64a908479"},"schema_version":"1.0"},"canonical_sha256":"628ed2b18141ee751826bdf4db46c0b7ef64f5ea890c10be2ecfafbcbcf928e7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:56:00.343697Z","signature_b64":"c5nL0LjIDH3Dlu1n3ZU8/8p2ELgM1ffVjaNShVYHvnxBCKsNeF62sLIbWaHusd821TjLv5MEW3n7F7PIynZLDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"628ed2b18141ee751826bdf4db46c0b7ef64f5ea890c10be2ecfafbcbcf928e7","last_reissued_at":"2026-05-18T01:56:00.343130Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:56:00.343130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1208.0113","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":"2026-05-18T01:56:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"u+zgYvPpcf8V5V2LlzP8sV+szzdBeVkYUjSnxIzDupaukCZHnuZ4BQpO87b30+Hkk3/vxEmeCXnTIuA1Z42WDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T17:37:43.961738Z"},"content_sha256":"147fcba7684455f051f0661d28f21a87dd5d4c269bc4452bfa67e298d3e94067","schema_version":"1.0","event_id":"sha256:147fcba7684455f051f0661d28f21a87dd5d4c269bc4452bfa67e298d3e94067"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:MKHNFMMBIHXHKGBGXX2NWRWAW7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Recombining Plasma and Hard X-ray Filament in the Mixed-Morphology Supernova Remnant W44","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Hiroya Yamaguchi, Hiroyuki Uchida, Katsuji Koyama, Makoto Sawada, Satoshi Yoshiike, Takaaki Tanaka, Takao Ohnishi, Takeshi Go Tsuru, Yasuo Fukui","submitted_at":"2012-08-01T06:24:15Z","abstract_excerpt":"We report new features of the typical mixed-morphology (MM) supernova remnant (SNR) W44. In the X-ray spectra obtained with Suzaku, radiative recombination continua (RRCs) of highly ionized atoms are detected for the first time. The spectra are well reproduced by a thermal plasma in a recombining phase. The best-fit parameters suggest that the electron temperature of the shock-heated matters cooled down rapidly from $\\sim1$,keV to $\\sim 0.5$,keV, possibly due to adiabatic expansion (rarefaction) occurred $\\sim20,000$ years ago. We also discover hard X-ray emission which shows an arc-like struc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0113","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":"2026-05-18T01:56:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"B0cSmmBkxJ9uLvUsfaV5XyAqOIrO2Fc+QUZ3DXKfJavtW/8lBo18gKCN3M5VL8HbggU+kWhnu24nAi9jQj4OBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-04T17:37:43.962089Z"},"content_sha256":"0afdafce1ced3d51edfa626e92c32ab69a70fd994b1437fbefde67558421b954","schema_version":"1.0","event_id":"sha256:0afdafce1ced3d51edfa626e92c32ab69a70fd994b1437fbefde67558421b954"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MKHNFMMBIHXHKGBGXX2NWRWAW7/bundle.json","state_url":"https://pith.science/pith/MKHNFMMBIHXHKGBGXX2NWRWAW7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MKHNFMMBIHXHKGBGXX2NWRWAW7/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":"2026-07-04T17:37:43Z","links":{"resolver":"https://pith.science/pith/MKHNFMMBIHXHKGBGXX2NWRWAW7","bundle":"https://pith.science/pith/MKHNFMMBIHXHKGBGXX2NWRWAW7/bundle.json","state":"https://pith.science/pith/MKHNFMMBIHXHKGBGXX2NWRWAW7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MKHNFMMBIHXHKGBGXX2NWRWAW7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:MKHNFMMBIHXHKGBGXX2NWRWAW7","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":"8f1de1273f146daf3c4c9199433ddd56764c2185d73ee6c8c88c0ec64a908479","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-01T06:24:15Z","title_canon_sha256":"87a283ced11d6f22f03a04deda393f7a99b55cf790ff74d35ddd1ce39f0d957b"},"schema_version":"1.0","source":{"id":"1208.0113","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0113","created_at":"2026-05-18T01:56:00Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0113v1","created_at":"2026-05-18T01:56:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0113","created_at":"2026-05-18T01:56:00Z"},{"alias_kind":"pith_short_12","alias_value":"MKHNFMMBIHXH","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"MKHNFMMBIHXHKGBG","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"MKHNFMMB","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:0afdafce1ced3d51edfa626e92c32ab69a70fd994b1437fbefde67558421b954","target":"graph","created_at":"2026-05-18T01:56:00Z","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 report new features of the typical mixed-morphology (MM) supernova remnant (SNR) W44. In the X-ray spectra obtained with Suzaku, radiative recombination continua (RRCs) of highly ionized atoms are detected for the first time. The spectra are well reproduced by a thermal plasma in a recombining phase. The best-fit parameters suggest that the electron temperature of the shock-heated matters cooled down rapidly from $\\sim1$,keV to $\\sim 0.5$,keV, possibly due to adiabatic expansion (rarefaction) occurred $\\sim20,000$ years ago. We also discover hard X-ray emission which shows an arc-like struc","authors_text":"Hiroya Yamaguchi, Hiroyuki Uchida, Katsuji Koyama, Makoto Sawada, Satoshi Yoshiike, Takaaki Tanaka, Takao Ohnishi, Takeshi Go Tsuru, Yasuo Fukui","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-01T06:24:15Z","title":"Recombining Plasma and Hard X-ray Filament in the Mixed-Morphology Supernova Remnant W44"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0113","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":"sha256:147fcba7684455f051f0661d28f21a87dd5d4c269bc4452bfa67e298d3e94067","target":"record","created_at":"2026-05-18T01:56:00Z","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":"8f1de1273f146daf3c4c9199433ddd56764c2185d73ee6c8c88c0ec64a908479","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2012-08-01T06:24:15Z","title_canon_sha256":"87a283ced11d6f22f03a04deda393f7a99b55cf790ff74d35ddd1ce39f0d957b"},"schema_version":"1.0","source":{"id":"1208.0113","kind":"arxiv","version":1}},"canonical_sha256":"628ed2b18141ee751826bdf4db46c0b7ef64f5ea890c10be2ecfafbcbcf928e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"628ed2b18141ee751826bdf4db46c0b7ef64f5ea890c10be2ecfafbcbcf928e7","first_computed_at":"2026-05-18T01:56:00.343130Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:56:00.343130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"c5nL0LjIDH3Dlu1n3ZU8/8p2ELgM1ffVjaNShVYHvnxBCKsNeF62sLIbWaHusd821TjLv5MEW3n7F7PIynZLDg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:56:00.343697Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.0113","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:147fcba7684455f051f0661d28f21a87dd5d4c269bc4452bfa67e298d3e94067","sha256:0afdafce1ced3d51edfa626e92c32ab69a70fd994b1437fbefde67558421b954"],"state_sha256":"e1b1353c68d4527320769dbd2282dd05fa1602067e6cae648464356f41c21d9f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vYxzVVQ02bsH/9tMydaHFURl3q5+Djuqd6vRO+4yK4CcGxVBXEnTR+ABWWvMLolPZ6RroLSL+ibs36j60yg4CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-04T17:37:43.964019Z","bundle_sha256":"04c44400a8c625c172587730a785c31bcda03b82d726c77b7f08a37f66da8dd1"}}