{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:HAZFUOA6UPZQPZ6QVUXTIA6A54","short_pith_number":"pith:HAZFUOA6","canonical_record":{"source":{"id":"2007.15395","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-30T11:37:37Z","cross_cats_sorted":[],"title_canon_sha256":"1dffe7dbdcefedcc25da34a50eb91e92b827cd339b940458e601c6b1b6bc6e1a","abstract_canon_sha256":"ae909091c4c80a4427d2c0fd8fb6fcd0c02a901c5c91e5d721826706d0c75714"},"schema_version":"1.0"},"canonical_sha256":"38325a381ea3f307e7d0ad2f3403c0ef0eaad3d8f671fcb650bac63046b8e2d1","source":{"kind":"arxiv","id":"2007.15395","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.15395","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"arxiv_version","alias_value":"2007.15395v1","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.15395","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"pith_short_12","alias_value":"HAZFUOA6UPZQ","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"pith_short_16","alias_value":"HAZFUOA6UPZQPZ6Q","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"pith_short_8","alias_value":"HAZFUOA6","created_at":"2026-07-05T04:47:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:HAZFUOA6UPZQPZ6QVUXTIA6A54","target":"record","payload":{"canonical_record":{"source":{"id":"2007.15395","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-30T11:37:37Z","cross_cats_sorted":[],"title_canon_sha256":"1dffe7dbdcefedcc25da34a50eb91e92b827cd339b940458e601c6b1b6bc6e1a","abstract_canon_sha256":"ae909091c4c80a4427d2c0fd8fb6fcd0c02a901c5c91e5d721826706d0c75714"},"schema_version":"1.0"},"canonical_sha256":"38325a381ea3f307e7d0ad2f3403c0ef0eaad3d8f671fcb650bac63046b8e2d1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:47:54.512911Z","signature_b64":"M8SoFYZ33Ond5w0Lm3wbvTtEXRtdf4M/4Bul/s7yYVRE+KTC+zHeIB/EYbYLPJoXONrSo+FTLvYnOAOqNDHWBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"38325a381ea3f307e7d0ad2f3403c0ef0eaad3d8f671fcb650bac63046b8e2d1","last_reissued_at":"2026-07-05T04:47:54.512476Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:47:54.512476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2007.15395","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":"2026-07-05T04:47:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1Ty6YeDV2LnbjTCFmbH8iuckNrbf3Oke7oW34QNIe/Pq3TkzKaffP1abEwhaEHasCjRr0qAaYOhHc4F+sjXlAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T06:47:40.671336Z"},"content_sha256":"025e0134ca184f2d9581f134715c803be0b076bdf3e7559df11b24ff7068a967","schema_version":"1.0","event_id":"sha256:025e0134ca184f2d9581f134715c803be0b076bdf3e7559df11b24ff7068a967"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:HAZFUOA6UPZQPZ6QVUXTIA6A54","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pulsar radio emission mechanism I : On the amplification of Langmuir waves in the linear regime","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Dipanjan Mitra, George I. Melikidze, Sk. Minhajur Rahaman","submitted_at":"2020-07-30T11:37:37Z","abstract_excerpt":"Observations suggest that in normal period radio pulsars, coherent curvature radiation is excited within 10$\\%$ of the light cylinder. The coherence is attributed to Langmuir mode instability in a relativistically streaming one-dimensional plasma flow along the open magnetic field lines. In this work, we use a hot plasma treatment to solve the hydrodynamic dispersion relation of Langmuir mode for realistic pulsar parameters. The solution involves three scenarios of two-stream instability viz., driven by high energy beams, due to longitudinal drift that leads to a separation of electron-positro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.15395","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2007.15395/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:47:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PrSObc8FQBby7GYOQ6KOj6gh0KZIo97njXEAIrML8Zy+ukDogZGQTc6qqx00aj7cD1zrQKX2sdOuHCLa1zCRAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T06:47:40.673095Z"},"content_sha256":"1de81c44c0e76b9f7ea7d32a2ec369cbabd0ad14da0508cfc92733bed2aaf361","schema_version":"1.0","event_id":"sha256:1de81c44c0e76b9f7ea7d32a2ec369cbabd0ad14da0508cfc92733bed2aaf361"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HAZFUOA6UPZQPZ6QVUXTIA6A54/bundle.json","state_url":"https://pith.science/pith/HAZFUOA6UPZQPZ6QVUXTIA6A54/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HAZFUOA6UPZQPZ6QVUXTIA6A54/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":"2026-08-14T06:47:40Z","links":{"resolver":"https://pith.science/pith/HAZFUOA6UPZQPZ6QVUXTIA6A54","bundle":"https://pith.science/pith/HAZFUOA6UPZQPZ6QVUXTIA6A54/bundle.json","state":"https://pith.science/pith/HAZFUOA6UPZQPZ6QVUXTIA6A54/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HAZFUOA6UPZQPZ6QVUXTIA6A54/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:HAZFUOA6UPZQPZ6QVUXTIA6A54","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":"ae909091c4c80a4427d2c0fd8fb6fcd0c02a901c5c91e5d721826706d0c75714","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-30T11:37:37Z","title_canon_sha256":"1dffe7dbdcefedcc25da34a50eb91e92b827cd339b940458e601c6b1b6bc6e1a"},"schema_version":"1.0","source":{"id":"2007.15395","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.15395","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"arxiv_version","alias_value":"2007.15395v1","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.15395","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"pith_short_12","alias_value":"HAZFUOA6UPZQ","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"pith_short_16","alias_value":"HAZFUOA6UPZQPZ6Q","created_at":"2026-07-05T04:47:54Z"},{"alias_kind":"pith_short_8","alias_value":"HAZFUOA6","created_at":"2026-07-05T04:47:54Z"}],"graph_snapshots":[{"event_id":"sha256:1de81c44c0e76b9f7ea7d32a2ec369cbabd0ad14da0508cfc92733bed2aaf361","target":"graph","created_at":"2026-07-05T04:47:54Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2007.15395/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Observations suggest that in normal period radio pulsars, coherent curvature radiation is excited within 10$\\%$ of the light cylinder. The coherence is attributed to Langmuir mode instability in a relativistically streaming one-dimensional plasma flow along the open magnetic field lines. In this work, we use a hot plasma treatment to solve the hydrodynamic dispersion relation of Langmuir mode for realistic pulsar parameters. The solution involves three scenarios of two-stream instability viz., driven by high energy beams, due to longitudinal drift that leads to a separation of electron-positro","authors_text":"Dipanjan Mitra, George I. Melikidze, Sk. Minhajur Rahaman","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-30T11:37:37Z","title":"Pulsar radio emission mechanism I : On the amplification of Langmuir waves in the linear regime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.15395","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":"sha256:025e0134ca184f2d9581f134715c803be0b076bdf3e7559df11b24ff7068a967","target":"record","created_at":"2026-07-05T04:47:54Z","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":"ae909091c4c80a4427d2c0fd8fb6fcd0c02a901c5c91e5d721826706d0c75714","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-07-30T11:37:37Z","title_canon_sha256":"1dffe7dbdcefedcc25da34a50eb91e92b827cd339b940458e601c6b1b6bc6e1a"},"schema_version":"1.0","source":{"id":"2007.15395","kind":"arxiv","version":1}},"canonical_sha256":"38325a381ea3f307e7d0ad2f3403c0ef0eaad3d8f671fcb650bac63046b8e2d1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"38325a381ea3f307e7d0ad2f3403c0ef0eaad3d8f671fcb650bac63046b8e2d1","first_computed_at":"2026-07-05T04:47:54.512476Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:47:54.512476Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"M8SoFYZ33Ond5w0Lm3wbvTtEXRtdf4M/4Bul/s7yYVRE+KTC+zHeIB/EYbYLPJoXONrSo+FTLvYnOAOqNDHWBg==","signature_status":"signed_v1","signed_at":"2026-07-05T04:47:54.512911Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.15395","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:025e0134ca184f2d9581f134715c803be0b076bdf3e7559df11b24ff7068a967","sha256:1de81c44c0e76b9f7ea7d32a2ec369cbabd0ad14da0508cfc92733bed2aaf361"],"state_sha256":"7bd557d954827d8384f7cc88a6195d929ba7c89c51028603fbcdbc3f2f096d91"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oy+d3/5lrhT4Rd20vCw2qWGixvje806BzbQdJErxWAiFYyzZROAxx/UzrNW3HC5aNdfwEzhRMYYNWGmqQc63DA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T06:47:40.682179Z","bundle_sha256":"0adfe7e127be0bf4612c6b94f9a6db4986e46c9a39fc6ac57eab739c3958a258"}}