{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:JX5MDFZ2MKO37GYDFKCV2TVQRZ","short_pith_number":"pith:JX5MDFZ2","canonical_record":{"source":{"id":"1506.07926","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-26T00:00:15Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"9b2082192e5b594f9245a3cba56dd175556e22c7da34d206086294aaccd841f1","abstract_canon_sha256":"72ba2c42adb34f7038b467a086b0b3d193d28836b6ba6f07a141f32edfd6e775"},"schema_version":"1.0"},"canonical_sha256":"4dfac1973a629dbf9b032a855d4eb08e5c1a65883b8f0d13415e79adfb5fad47","source":{"kind":"arxiv","id":"1506.07926","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.07926","created_at":"2026-05-18T01:36:52Z"},{"alias_kind":"arxiv_version","alias_value":"1506.07926v1","created_at":"2026-05-18T01:36:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.07926","created_at":"2026-05-18T01:36:52Z"},{"alias_kind":"pith_short_12","alias_value":"JX5MDFZ2MKO3","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JX5MDFZ2MKO37GYD","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JX5MDFZ2","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:JX5MDFZ2MKO37GYDFKCV2TVQRZ","target":"record","payload":{"canonical_record":{"source":{"id":"1506.07926","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-26T00:00:15Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"9b2082192e5b594f9245a3cba56dd175556e22c7da34d206086294aaccd841f1","abstract_canon_sha256":"72ba2c42adb34f7038b467a086b0b3d193d28836b6ba6f07a141f32edfd6e775"},"schema_version":"1.0"},"canonical_sha256":"4dfac1973a629dbf9b032a855d4eb08e5c1a65883b8f0d13415e79adfb5fad47","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:36:52.643581Z","signature_b64":"WwS5mctvMkp3ntQI7Fb1nh0n9OZlzIJud1DRcV57NB1VOiTI2ObOERvigrhBvRwvfOXVcsn6JRFI0xQzPzW5DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4dfac1973a629dbf9b032a855d4eb08e5c1a65883b8f0d13415e79adfb5fad47","last_reissued_at":"2026-05-18T01:36:52.642849Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:36:52.642849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.07926","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":"2026-05-18T01:36:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6pP7TxAsTIUxWIB6k5pl3ckXLQBhfvsMa1J1HXTBztujtszEgfJeh8yF248c3auPL2tsBqXkQ00Ia9ahn8R7Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:16:01.166650Z"},"content_sha256":"9b267099a3fe16fd548f9ba7f737f223f43904b2e0ca116327e9e18de1414daa","schema_version":"1.0","event_id":"sha256:9b267099a3fe16fd548f9ba7f737f223f43904b2e0ca116327e9e18de1414daa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:JX5MDFZ2MKO37GYDFKCV2TVQRZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dust Cooling in Supernova Remnants in the Large Magellanic Cloud","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Bon-Chul Koo, Hiroyuki Hirashita, Ji Yeon Seok","submitted_at":"2015-06-26T00:00:15Z","abstract_excerpt":"The infrared-to-X-ray (IRX) flux ratio traces the relative importance of dust cooling to gas cooling in astrophysical plasma such as supernova remnants (SNRs). We derive IRX ratios of SNRs in the LMC using Spitzer and Chandra SNR survey data and compare them with those of Galactic SNRs. IRX ratios of all the SNRs in the sample are found to be moderately greater than unity, indicating that dust grains are a more efficient coolant than gas although gas cooling may not be negligible. The IRX ratios of the LMC SNRs are systematically lower than those of the Galactic SNRs. As both dust cooling and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.07926","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":"2026-05-18T01:36:52Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3H+ld1PKZWXCm4ORLtK0u3LsBA3brvdttt4Am+55nlJpxoSrFeQteN4a5rGy7gyGN6KBI80y3YtMFARJpmC8Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:16:01.166994Z"},"content_sha256":"b4261015a6625ec17a37b2846c45bb1875dcf1e534176c3be3e40ab6b216f921","schema_version":"1.0","event_id":"sha256:b4261015a6625ec17a37b2846c45bb1875dcf1e534176c3be3e40ab6b216f921"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JX5MDFZ2MKO37GYDFKCV2TVQRZ/bundle.json","state_url":"https://pith.science/pith/JX5MDFZ2MKO37GYDFKCV2TVQRZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JX5MDFZ2MKO37GYDFKCV2TVQRZ/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":"2026-06-03T02:16:01Z","links":{"resolver":"https://pith.science/pith/JX5MDFZ2MKO37GYDFKCV2TVQRZ","bundle":"https://pith.science/pith/JX5MDFZ2MKO37GYDFKCV2TVQRZ/bundle.json","state":"https://pith.science/pith/JX5MDFZ2MKO37GYDFKCV2TVQRZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JX5MDFZ2MKO37GYDFKCV2TVQRZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:JX5MDFZ2MKO37GYDFKCV2TVQRZ","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":"72ba2c42adb34f7038b467a086b0b3d193d28836b6ba6f07a141f32edfd6e775","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-26T00:00:15Z","title_canon_sha256":"9b2082192e5b594f9245a3cba56dd175556e22c7da34d206086294aaccd841f1"},"schema_version":"1.0","source":{"id":"1506.07926","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.07926","created_at":"2026-05-18T01:36:52Z"},{"alias_kind":"arxiv_version","alias_value":"1506.07926v1","created_at":"2026-05-18T01:36:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.07926","created_at":"2026-05-18T01:36:52Z"},{"alias_kind":"pith_short_12","alias_value":"JX5MDFZ2MKO3","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"JX5MDFZ2MKO37GYD","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"JX5MDFZ2","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:b4261015a6625ec17a37b2846c45bb1875dcf1e534176c3be3e40ab6b216f921","target":"graph","created_at":"2026-05-18T01:36:52Z","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":"The infrared-to-X-ray (IRX) flux ratio traces the relative importance of dust cooling to gas cooling in astrophysical plasma such as supernova remnants (SNRs). We derive IRX ratios of SNRs in the LMC using Spitzer and Chandra SNR survey data and compare them with those of Galactic SNRs. IRX ratios of all the SNRs in the sample are found to be moderately greater than unity, indicating that dust grains are a more efficient coolant than gas although gas cooling may not be negligible. The IRX ratios of the LMC SNRs are systematically lower than those of the Galactic SNRs. As both dust cooling and ","authors_text":"Bon-Chul Koo, Hiroyuki Hirashita, Ji Yeon Seok","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-26T00:00:15Z","title":"Dust Cooling in Supernova Remnants in the Large Magellanic Cloud"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.07926","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":"sha256:9b267099a3fe16fd548f9ba7f737f223f43904b2e0ca116327e9e18de1414daa","target":"record","created_at":"2026-05-18T01:36:52Z","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":"72ba2c42adb34f7038b467a086b0b3d193d28836b6ba6f07a141f32edfd6e775","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-26T00:00:15Z","title_canon_sha256":"9b2082192e5b594f9245a3cba56dd175556e22c7da34d206086294aaccd841f1"},"schema_version":"1.0","source":{"id":"1506.07926","kind":"arxiv","version":1}},"canonical_sha256":"4dfac1973a629dbf9b032a855d4eb08e5c1a65883b8f0d13415e79adfb5fad47","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4dfac1973a629dbf9b032a855d4eb08e5c1a65883b8f0d13415e79adfb5fad47","first_computed_at":"2026-05-18T01:36:52.642849Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:52.642849Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WwS5mctvMkp3ntQI7Fb1nh0n9OZlzIJud1DRcV57NB1VOiTI2ObOERvigrhBvRwvfOXVcsn6JRFI0xQzPzW5DA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:52.643581Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.07926","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b267099a3fe16fd548f9ba7f737f223f43904b2e0ca116327e9e18de1414daa","sha256:b4261015a6625ec17a37b2846c45bb1875dcf1e534176c3be3e40ab6b216f921"],"state_sha256":"06fcd02268e6e363c0427f15eafc5cde46d4350c1b8cd7bba26e2dd34fcf8399"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hSunUmYZ3gRKvM3uJrmGA4RNegxXt25qCth4fjxhudmnQVdrzOYL5J2iL3PwFn6MJYB04WpNcSCXyyEwgi0OCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T02:16:01.169505Z","bundle_sha256":"54f271d360a0a8b8715558d584ea61045033ad48092b534efd47cb3bfd726633"}}