{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:7DOQGHFLYV5XUHOEPJAINY2ZL6","short_pith_number":"pith:7DOQGHFL","canonical_record":{"source":{"id":"1511.02063","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-11-06T13:10:42Z","cross_cats_sorted":[],"title_canon_sha256":"29420e648de615f678145eab441903937cb3079426f94dc2cd8373134caa1813","abstract_canon_sha256":"7e2f2d3dadc98e786d76096cffae5ed86eaa37cbb3e7ae92df91bcd4f685c16a"},"schema_version":"1.0"},"canonical_sha256":"f8dd031cabc57b7a1dc47a4086e3595faddd331e9b445aa6d2d3c630f25bf21d","source":{"kind":"arxiv","id":"1511.02063","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.02063","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"arxiv_version","alias_value":"1511.02063v2","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.02063","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"pith_short_12","alias_value":"7DOQGHFLYV5X","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"7DOQGHFLYV5XUHOE","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"7DOQGHFL","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:7DOQGHFLYV5XUHOEPJAINY2ZL6","target":"record","payload":{"canonical_record":{"source":{"id":"1511.02063","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-11-06T13:10:42Z","cross_cats_sorted":[],"title_canon_sha256":"29420e648de615f678145eab441903937cb3079426f94dc2cd8373134caa1813","abstract_canon_sha256":"7e2f2d3dadc98e786d76096cffae5ed86eaa37cbb3e7ae92df91bcd4f685c16a"},"schema_version":"1.0"},"canonical_sha256":"f8dd031cabc57b7a1dc47a4086e3595faddd331e9b445aa6d2d3c630f25bf21d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:16:45.773798Z","signature_b64":"BnLNuvPvvy5IAHaD0vVEPt6WoMxf/uwEFvMSih4VR39vPCVlAI+DK2LR1BMQU8E0lJXljDKJQwStUrc7V9L7Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f8dd031cabc57b7a1dc47a4086e3595faddd331e9b445aa6d2d3c630f25bf21d","last_reissued_at":"2026-05-18T01:16:45.773173Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:16:45.773173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.02063","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:16:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HL+JZFspML6IwFsfwwAcVh+OmqiCKUmEwpTb0ajxpoAlNjGLJdgiJ7ZWyAXKoezevgDf+XvekrFRsw0QEw4aCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:25:55.131899Z"},"content_sha256":"98829d5d846fe5edf6c532d217c15f215e5f50f87b2842464eb680b48eb8e59d","schema_version":"1.0","event_id":"sha256:98829d5d846fe5edf6c532d217c15f215e5f50f87b2842464eb680b48eb8e59d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:7DOQGHFLYV5XUHOEPJAINY2ZL6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Experimental observation of precursor solitons in a flowing complex plasma","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"A. Sen, P. Bandyopadhyay, Surabhi Jaiswal","submitted_at":"2015-11-06T13:10:42Z","abstract_excerpt":"The excitation of precursor solitons ahead of a rapidly moving object in a fluid, a spectacular phenomenon in hydrodynamics that has often been observed ahead of moving ships, has surprisingly not been investigated in plasmas where the fluid model holds good for low frequency excitations such as ion acoustic waves. In this paper we report the first experimental observation of precursor solitons in a flowing dusty plasma. The nonlinear solitary dust acoustic waves (DAWs) are excited by a supersonic mass flow of the dust particles over an electrostatic potential hill. In a frame where the fluid "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.02063","kind":"arxiv","version":2},"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":"2026-05-18T01:16:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ez3EibM/Z3CCRU7P+2ivLn6+lEpP3M7AwKv9fLOo1VoWxhHSnsR26hbfVCnceBHd8T3uZPggkgvvkhLYLEQ+Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T09:25:55.132540Z"},"content_sha256":"afec6fb986d428187653a15f97a695d59aeba11269ff143a4f50adc4f7dd23ff","schema_version":"1.0","event_id":"sha256:afec6fb986d428187653a15f97a695d59aeba11269ff143a4f50adc4f7dd23ff"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7DOQGHFLYV5XUHOEPJAINY2ZL6/bundle.json","state_url":"https://pith.science/pith/7DOQGHFLYV5XUHOEPJAINY2ZL6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7DOQGHFLYV5XUHOEPJAINY2ZL6/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":"2026-05-25T09:25:55Z","links":{"resolver":"https://pith.science/pith/7DOQGHFLYV5XUHOEPJAINY2ZL6","bundle":"https://pith.science/pith/7DOQGHFLYV5XUHOEPJAINY2ZL6/bundle.json","state":"https://pith.science/pith/7DOQGHFLYV5XUHOEPJAINY2ZL6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7DOQGHFLYV5XUHOEPJAINY2ZL6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:7DOQGHFLYV5XUHOEPJAINY2ZL6","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":"7e2f2d3dadc98e786d76096cffae5ed86eaa37cbb3e7ae92df91bcd4f685c16a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-11-06T13:10:42Z","title_canon_sha256":"29420e648de615f678145eab441903937cb3079426f94dc2cd8373134caa1813"},"schema_version":"1.0","source":{"id":"1511.02063","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.02063","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"arxiv_version","alias_value":"1511.02063v2","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.02063","created_at":"2026-05-18T01:16:45Z"},{"alias_kind":"pith_short_12","alias_value":"7DOQGHFLYV5X","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"7DOQGHFLYV5XUHOE","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"7DOQGHFL","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:afec6fb986d428187653a15f97a695d59aeba11269ff143a4f50adc4f7dd23ff","target":"graph","created_at":"2026-05-18T01:16:45Z","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 excitation of precursor solitons ahead of a rapidly moving object in a fluid, a spectacular phenomenon in hydrodynamics that has often been observed ahead of moving ships, has surprisingly not been investigated in plasmas where the fluid model holds good for low frequency excitations such as ion acoustic waves. In this paper we report the first experimental observation of precursor solitons in a flowing dusty plasma. The nonlinear solitary dust acoustic waves (DAWs) are excited by a supersonic mass flow of the dust particles over an electrostatic potential hill. In a frame where the fluid ","authors_text":"A. Sen, P. Bandyopadhyay, Surabhi Jaiswal","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-11-06T13:10:42Z","title":"Experimental observation of precursor solitons in a flowing complex plasma"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.02063","kind":"arxiv","version":2},"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":"sha256:98829d5d846fe5edf6c532d217c15f215e5f50f87b2842464eb680b48eb8e59d","target":"record","created_at":"2026-05-18T01:16:45Z","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":"7e2f2d3dadc98e786d76096cffae5ed86eaa37cbb3e7ae92df91bcd4f685c16a","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2015-11-06T13:10:42Z","title_canon_sha256":"29420e648de615f678145eab441903937cb3079426f94dc2cd8373134caa1813"},"schema_version":"1.0","source":{"id":"1511.02063","kind":"arxiv","version":2}},"canonical_sha256":"f8dd031cabc57b7a1dc47a4086e3595faddd331e9b445aa6d2d3c630f25bf21d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f8dd031cabc57b7a1dc47a4086e3595faddd331e9b445aa6d2d3c630f25bf21d","first_computed_at":"2026-05-18T01:16:45.773173Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:16:45.773173Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BnLNuvPvvy5IAHaD0vVEPt6WoMxf/uwEFvMSih4VR39vPCVlAI+DK2LR1BMQU8E0lJXljDKJQwStUrc7V9L7Dw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:16:45.773798Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.02063","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:98829d5d846fe5edf6c532d217c15f215e5f50f87b2842464eb680b48eb8e59d","sha256:afec6fb986d428187653a15f97a695d59aeba11269ff143a4f50adc4f7dd23ff"],"state_sha256":"9a23647f672d9356f619f7f03026b0e8ca03d8d60c848ba9b710b15b60acd6d7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nAQHUQ/GONrmKfzelNi/+4BFimTWtjSvAciam+63A5nIIDiRQ0IV9nGT2jxaSB2HVfOXmXsi58w2Nze5j/eCBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T09:25:55.136453Z","bundle_sha256":"480eb623237f04d4a4bdcbe766a95de61b6ca21a9f91e6ca1d2dc155f56f6e55"}}