{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:CGKJZF5NDEJMDXCIQARYIN44MA","short_pith_number":"pith:CGKJZF5N","canonical_record":{"source":{"id":"2606.03726","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-02T14:46:04Z","cross_cats_sorted":[],"title_canon_sha256":"83d8d7b2ee9c81c6837296dc6c601c908bd40c63853c028a8bfd14e422b823c9","abstract_canon_sha256":"549a200cdc58f0676d3caa42c06cd4599f739404b1261493eebab37b7d8b7f22"},"schema_version":"1.0"},"canonical_sha256":"11949c97ad1912c1dc48802384379c600836ed9dad65671fa291af8926cf3656","source":{"kind":"arxiv","id":"2606.03726","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.03726","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"arxiv_version","alias_value":"2606.03726v1","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.03726","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"pith_short_12","alias_value":"CGKJZF5NDEJM","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"pith_short_16","alias_value":"CGKJZF5NDEJMDXCI","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"pith_short_8","alias_value":"CGKJZF5N","created_at":"2026-06-03T01:06:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:CGKJZF5NDEJMDXCIQARYIN44MA","target":"record","payload":{"canonical_record":{"source":{"id":"2606.03726","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-02T14:46:04Z","cross_cats_sorted":[],"title_canon_sha256":"83d8d7b2ee9c81c6837296dc6c601c908bd40c63853c028a8bfd14e422b823c9","abstract_canon_sha256":"549a200cdc58f0676d3caa42c06cd4599f739404b1261493eebab37b7d8b7f22"},"schema_version":"1.0"},"canonical_sha256":"11949c97ad1912c1dc48802384379c600836ed9dad65671fa291af8926cf3656","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T01:06:05.533276Z","signature_b64":"K5Rp1ke4wGCqXZiXkcdWSyLdP6bG5lnqvd1baeda5g/ER9/erjlGCuMp9LsZSyZseTTwN2KIOI1Qf50uXbb9CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11949c97ad1912c1dc48802384379c600836ed9dad65671fa291af8926cf3656","last_reissued_at":"2026-06-03T01:06:05.532872Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T01:06:05.532872Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.03726","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":"2026-06-03T01:06:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8A17ITuuUCMBRA2WWWrz7OOfJ54K0rf6MOWsfmpkHBVpVSaa1KL+YH9FarvOye+8mM39CDH/vFSDqrbef5aIBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T06:06:23.858978Z"},"content_sha256":"aa7b245ca1800649c502185ede8bf376e1bf642205fcffde72984853323733aa","schema_version":"1.0","event_id":"sha256:aa7b245ca1800649c502185ede8bf376e1bf642205fcffde72984853323733aa"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:CGKJZF5NDEJMDXCIQARYIN44MA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precursor Solitons in Plasma Flow Past Charged Obstacles: Role of Obstacle Bias and Ion Temperature Anisotropy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Prince Kumar, S. K. Mishra","submitted_at":"2026-06-02T14:46:04Z","abstract_excerpt":"We investigate electrostatic ion-acoustic precursor solitons in a plasma flow past an absorbing charged obstacle using two-dimensional (2D) electrostatic PIC simulations. A key outcome of the present formulation is that ion-temperature anisotropy can enable precursor formation even in regimes where isotropic plasmas, due to Landau damping, cannot sustain such structures. Specifically, temperature anisotropy in the 2D drifting flow along the x-direction, arising from a reduction in the transverse thermal velocity (y-direction) relative to the parallel thermal velocity (x-direction), favors the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.03726","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/2606.03726/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":"2026-06-03T01:06:05Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c2G3urJPfEPIXcjbLH57pr2LwuP9nmfoqJRTvE8owIWzv+/iTVJloO9tq7AtASa/JkIDVXLbuVvFOEitrHh0DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T06:06:23.859770Z"},"content_sha256":"fda345aa89db75d50a02cdc22c1f19fab648198750b5b41ce24524ccbb2e7952","schema_version":"1.0","event_id":"sha256:fda345aa89db75d50a02cdc22c1f19fab648198750b5b41ce24524ccbb2e7952"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CGKJZF5NDEJMDXCIQARYIN44MA/bundle.json","state_url":"https://pith.science/pith/CGKJZF5NDEJMDXCIQARYIN44MA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CGKJZF5NDEJMDXCIQARYIN44MA/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":"2026-06-04T06:06:23Z","links":{"resolver":"https://pith.science/pith/CGKJZF5NDEJMDXCIQARYIN44MA","bundle":"https://pith.science/pith/CGKJZF5NDEJMDXCIQARYIN44MA/bundle.json","state":"https://pith.science/pith/CGKJZF5NDEJMDXCIQARYIN44MA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CGKJZF5NDEJMDXCIQARYIN44MA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:CGKJZF5NDEJMDXCIQARYIN44MA","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":"549a200cdc58f0676d3caa42c06cd4599f739404b1261493eebab37b7d8b7f22","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-02T14:46:04Z","title_canon_sha256":"83d8d7b2ee9c81c6837296dc6c601c908bd40c63853c028a8bfd14e422b823c9"},"schema_version":"1.0","source":{"id":"2606.03726","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.03726","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"arxiv_version","alias_value":"2606.03726v1","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.03726","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"pith_short_12","alias_value":"CGKJZF5NDEJM","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"pith_short_16","alias_value":"CGKJZF5NDEJMDXCI","created_at":"2026-06-03T01:06:05Z"},{"alias_kind":"pith_short_8","alias_value":"CGKJZF5N","created_at":"2026-06-03T01:06:05Z"}],"graph_snapshots":[{"event_id":"sha256:fda345aa89db75d50a02cdc22c1f19fab648198750b5b41ce24524ccbb2e7952","target":"graph","created_at":"2026-06-03T01:06:05Z","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/2606.03726/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We investigate electrostatic ion-acoustic precursor solitons in a plasma flow past an absorbing charged obstacle using two-dimensional (2D) electrostatic PIC simulations. A key outcome of the present formulation is that ion-temperature anisotropy can enable precursor formation even in regimes where isotropic plasmas, due to Landau damping, cannot sustain such structures. Specifically, temperature anisotropy in the 2D drifting flow along the x-direction, arising from a reduction in the transverse thermal velocity (y-direction) relative to the parallel thermal velocity (x-direction), favors the ","authors_text":"Prince Kumar, S. K. Mishra","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-02T14:46:04Z","title":"Precursor Solitons in Plasma Flow Past Charged Obstacles: Role of Obstacle Bias and Ion Temperature Anisotropy"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.03726","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:aa7b245ca1800649c502185ede8bf376e1bf642205fcffde72984853323733aa","target":"record","created_at":"2026-06-03T01:06:05Z","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":"549a200cdc58f0676d3caa42c06cd4599f739404b1261493eebab37b7d8b7f22","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2026-06-02T14:46:04Z","title_canon_sha256":"83d8d7b2ee9c81c6837296dc6c601c908bd40c63853c028a8bfd14e422b823c9"},"schema_version":"1.0","source":{"id":"2606.03726","kind":"arxiv","version":1}},"canonical_sha256":"11949c97ad1912c1dc48802384379c600836ed9dad65671fa291af8926cf3656","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11949c97ad1912c1dc48802384379c600836ed9dad65671fa291af8926cf3656","first_computed_at":"2026-06-03T01:06:05.532872Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T01:06:05.532872Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K5Rp1ke4wGCqXZiXkcdWSyLdP6bG5lnqvd1baeda5g/ER9/erjlGCuMp9LsZSyZseTTwN2KIOI1Qf50uXbb9CQ==","signature_status":"signed_v1","signed_at":"2026-06-03T01:06:05.533276Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.03726","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:aa7b245ca1800649c502185ede8bf376e1bf642205fcffde72984853323733aa","sha256:fda345aa89db75d50a02cdc22c1f19fab648198750b5b41ce24524ccbb2e7952"],"state_sha256":"c4acd078e2721e5ac009b8a70e5d911f78afa179afad45e0e45177ede580da14"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rPJATmE1K13uwOyNooa9elnyz5KVSYgAW2Fq0p9MldKUS/ucbZTIrNH/DYvre0pXOJfIK7B40+zkoix8TlALAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T06:06:23.863342Z","bundle_sha256":"8160445848ec137b6f82c4499de43eb4aa3986a48be318764ec1b13c7bfbce59"}}