{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:DI67Y7TKEY6I62GJH6JO57DT2Y","short_pith_number":"pith:DI67Y7TK","canonical_record":{"source":{"id":"1805.09770","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-24T16:44:54Z","cross_cats_sorted":[],"title_canon_sha256":"4a461e9aab9909ec8bbb41b6c2acf98f7f88917eb5cd4132bf5ea24801241ab7","abstract_canon_sha256":"c5cfde0ccba53fa65dadd2e7eff95a2be8f1f933d3fd02570394af22539823b3"},"schema_version":"1.0"},"canonical_sha256":"1a3dfc7e6a263c8f68c93f92eefc73d61a0b6a91aa96ed9dc360c556b4b61b2f","source":{"kind":"arxiv","id":"1805.09770","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.09770","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"arxiv_version","alias_value":"1805.09770v1","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.09770","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"pith_short_12","alias_value":"DI67Y7TKEY6I","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DI67Y7TKEY6I62GJ","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DI67Y7TK","created_at":"2026-05-18T12:32:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:DI67Y7TKEY6I62GJH6JO57DT2Y","target":"record","payload":{"canonical_record":{"source":{"id":"1805.09770","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-24T16:44:54Z","cross_cats_sorted":[],"title_canon_sha256":"4a461e9aab9909ec8bbb41b6c2acf98f7f88917eb5cd4132bf5ea24801241ab7","abstract_canon_sha256":"c5cfde0ccba53fa65dadd2e7eff95a2be8f1f933d3fd02570394af22539823b3"},"schema_version":"1.0"},"canonical_sha256":"1a3dfc7e6a263c8f68c93f92eefc73d61a0b6a91aa96ed9dc360c556b4b61b2f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:29.496839Z","signature_b64":"paw7GeBJl2VO818cRuo5p29VNAotTCUePamd3Gz4ImKYQ7T/d5ksuKlBnYTo7ZSWbwo2LMH9Z/g1bvSVU2iKAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"1a3dfc7e6a263c8f68c93f92eefc73d61a0b6a91aa96ed9dc360c556b4b61b2f","last_reissued_at":"2026-05-18T00:01:29.496290Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:29.496290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.09770","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":"2026-05-18T00:01:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HPxI2/NaWy79kY2rLBHNSoSUUpEvAXdaTEpSVR/kvhiQv9G6n233Kxq/GEg3/UmuHC9k+5sNU2qtnhV4EnHkBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T17:00:44.496031Z"},"content_sha256":"477eb7434872f5c4b2173abbbb33b5177846f631013c4342d48dd8f2d46fc727","schema_version":"1.0","event_id":"sha256:477eb7434872f5c4b2173abbbb33b5177846f631013c4342d48dd8f2d46fc727"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:DI67Y7TKEY6I62GJH6JO57DT2Y","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnetar Signature - The U Curve","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Dipankar Bhattacharya, Prasanta Bera, Sajal Gupta, Sameer Patel, Vikram Soni","submitted_at":"2018-05-24T16:44:54Z","abstract_excerpt":"This work looks at some definitive signatures of magnetars, in particular of period closures accompanied by a decline of X-ray radiation in two models. We review some of the previous works which are based on the well known dynamo model in which the star is born with a period of a few milliseconds at high temperatures. In such a convection regime the dynamo mechanism can amplify the the magnetic fields to the magnetar value. This is in contrast to a screened core model which posits that a high density phase transition occurs in the inner core of magnetars that dynamically aligns all the neutron"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.09770","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":"2026-05-18T00:01:29Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6hIMw+h3txnqOKKyhv8f7Iaz7iCod4VbG2rrCpNhrxGIoNEuchTxhwpuhzyLmIruUY8dbQiHKMe3nNEFqihXCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T17:00:44.496403Z"},"content_sha256":"46514240a7d140225e7a3f1754c04ff75c7cfc315cf4ab641104712f545e4f97","schema_version":"1.0","event_id":"sha256:46514240a7d140225e7a3f1754c04ff75c7cfc315cf4ab641104712f545e4f97"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/DI67Y7TKEY6I62GJH6JO57DT2Y/bundle.json","state_url":"https://pith.science/pith/DI67Y7TKEY6I62GJH6JO57DT2Y/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/DI67Y7TKEY6I62GJH6JO57DT2Y/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":"2026-06-04T17:00:44Z","links":{"resolver":"https://pith.science/pith/DI67Y7TKEY6I62GJH6JO57DT2Y","bundle":"https://pith.science/pith/DI67Y7TKEY6I62GJH6JO57DT2Y/bundle.json","state":"https://pith.science/pith/DI67Y7TKEY6I62GJH6JO57DT2Y/state.json","well_known_bundle":"https://pith.science/.well-known/pith/DI67Y7TKEY6I62GJH6JO57DT2Y/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:DI67Y7TKEY6I62GJH6JO57DT2Y","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":"c5cfde0ccba53fa65dadd2e7eff95a2be8f1f933d3fd02570394af22539823b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-24T16:44:54Z","title_canon_sha256":"4a461e9aab9909ec8bbb41b6c2acf98f7f88917eb5cd4132bf5ea24801241ab7"},"schema_version":"1.0","source":{"id":"1805.09770","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.09770","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"arxiv_version","alias_value":"1805.09770v1","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.09770","created_at":"2026-05-18T00:01:29Z"},{"alias_kind":"pith_short_12","alias_value":"DI67Y7TKEY6I","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"DI67Y7TKEY6I62GJ","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"DI67Y7TK","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:46514240a7d140225e7a3f1754c04ff75c7cfc315cf4ab641104712f545e4f97","target":"graph","created_at":"2026-05-18T00:01:29Z","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":"This work looks at some definitive signatures of magnetars, in particular of period closures accompanied by a decline of X-ray radiation in two models. We review some of the previous works which are based on the well known dynamo model in which the star is born with a period of a few milliseconds at high temperatures. In such a convection regime the dynamo mechanism can amplify the the magnetic fields to the magnetar value. This is in contrast to a screened core model which posits that a high density phase transition occurs in the inner core of magnetars that dynamically aligns all the neutron","authors_text":"Dipankar Bhattacharya, Prasanta Bera, Sajal Gupta, Sameer Patel, Vikram Soni","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-24T16:44:54Z","title":"Magnetar Signature - The U Curve"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.09770","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":"sha256:477eb7434872f5c4b2173abbbb33b5177846f631013c4342d48dd8f2d46fc727","target":"record","created_at":"2026-05-18T00:01:29Z","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":"c5cfde0ccba53fa65dadd2e7eff95a2be8f1f933d3fd02570394af22539823b3","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2018-05-24T16:44:54Z","title_canon_sha256":"4a461e9aab9909ec8bbb41b6c2acf98f7f88917eb5cd4132bf5ea24801241ab7"},"schema_version":"1.0","source":{"id":"1805.09770","kind":"arxiv","version":1}},"canonical_sha256":"1a3dfc7e6a263c8f68c93f92eefc73d61a0b6a91aa96ed9dc360c556b4b61b2f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1a3dfc7e6a263c8f68c93f92eefc73d61a0b6a91aa96ed9dc360c556b4b61b2f","first_computed_at":"2026-05-18T00:01:29.496290Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:01:29.496290Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"paw7GeBJl2VO818cRuo5p29VNAotTCUePamd3Gz4ImKYQ7T/d5ksuKlBnYTo7ZSWbwo2LMH9Z/g1bvSVU2iKAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:01:29.496839Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.09770","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:477eb7434872f5c4b2173abbbb33b5177846f631013c4342d48dd8f2d46fc727","sha256:46514240a7d140225e7a3f1754c04ff75c7cfc315cf4ab641104712f545e4f97"],"state_sha256":"1d73a8d7526d942ab4df464d8c9929463930342dc9886846e7037cdd511229b8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MvrlHw0wQw3mqVsRtqW5xtj3zizWy0beKqSwkHSRvWQjIphVpR3o6QTj3gq/Kzh5OWSwofx86TEgx5geh3ofDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T17:00:44.498393Z","bundle_sha256":"d6c9b121c4375e845490443f4227ce1df777994c72b04069563fe037e4bd457b"}}