{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:EPQ5NPHEONTOHSHKMA62ZHII42","short_pith_number":"pith:EPQ5NPHE","canonical_record":{"source":{"id":"1407.1823","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-07T19:51:18Z","cross_cats_sorted":[],"title_canon_sha256":"35b10e4df1a4ecfe2fd74f39dca8fb64b4db79b554669f08bc10d1f9b268163d","abstract_canon_sha256":"2bad0e833f2540e98cd465e03de6aa53713f61b987221669f381192e81123b41"},"schema_version":"1.0"},"canonical_sha256":"23e1d6bce47366e3c8ea603dac9d08e694512320b0379246f07779c17baaf2e8","source":{"kind":"arxiv","id":"1407.1823","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.1823","created_at":"2026-05-18T02:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"1407.1823v1","created_at":"2026-05-18T02:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.1823","created_at":"2026-05-18T02:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"EPQ5NPHEONTO","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_16","alias_value":"EPQ5NPHEONTOHSHK","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_8","alias_value":"EPQ5NPHE","created_at":"2026-05-18T12:28:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:EPQ5NPHEONTOHSHKMA62ZHII42","target":"record","payload":{"canonical_record":{"source":{"id":"1407.1823","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-07T19:51:18Z","cross_cats_sorted":[],"title_canon_sha256":"35b10e4df1a4ecfe2fd74f39dca8fb64b4db79b554669f08bc10d1f9b268163d","abstract_canon_sha256":"2bad0e833f2540e98cd465e03de6aa53713f61b987221669f381192e81123b41"},"schema_version":"1.0"},"canonical_sha256":"23e1d6bce47366e3c8ea603dac9d08e694512320b0379246f07779c17baaf2e8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:43:34.448666Z","signature_b64":"K+9Ozs1erxzJJtE7jM7CEJNdgREpOneBAZ01d9Fyg/4T/Mu7ZF0S1n5L4+ZDwLqriZl2jqmonnSW/dQDadupCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"23e1d6bce47366e3c8ea603dac9d08e694512320b0379246f07779c17baaf2e8","last_reissued_at":"2026-05-18T02:43:34.448026Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:43:34.448026Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1407.1823","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":"2026-05-18T02:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WyVCGKiH+S1PnR5hvcG+vWEiTFskFbmWPoo0KHg3N7htCKVOIzXAkHc696xKr/xz1Nz38sy1H5hDnCIRhpigAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:20:07.562406Z"},"content_sha256":"15d24073f1e3d501ee4aae42bd04c4002407ad40b982e90d7857d487062fc2a2","schema_version":"1.0","event_id":"sha256:15d24073f1e3d501ee4aae42bd04c4002407ad40b982e90d7857d487062fc2a2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:EPQ5NPHEONTOHSHKMA62ZHII42","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Upper limits to interstellar NH+ and para-NH2- abundances. Herschel-HIFI observations towards Sgr B2 (M) and G10.6-0.4 (W31C)","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"{\\AA}. Hjalmarson, A.O.H. Olofsson, C.M. Persson, D.C. Lis, E. Herbst, E.S. Wirstr\\\"om, G.E. Hassel, H.M. Cuppen, H.S.P. M\\\"uller, J. Cernicharo, J.H. Black, K.M. Menten, M. Gerin, M. Hajigholi, M. Olberg","submitted_at":"2014-07-07T19:51:18Z","abstract_excerpt":"The understanding of interstellar nitrogen chemistry has improved significantly with recent results from the Herschel Space Observatory. To set even better constraints, we report here on deep searches for the NH+ ground state rotational transition J=1.5-0.5 of the ^2Pi_1/2 lower spin ladder, with fine-structure transitions at 1013 and 1019 GHz, and the para-NH2- 1_1,1-0_0,0 rotational transition at 934 GHz towards Sgr B2(M) and G10.6-0.4 using Herschel-HIFI. No clear detections of NH+ are made and the derived upper limits are <2*10^-12 and <7*10^-13 in Sgr B2(M) and G10.6-0.4, respectively. Th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.1823","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":"2026-05-18T02:43:34Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1pLYfNP888EXeQe4qN/Dt0+VBmt9fKEc2qZCC9UKw9lfRUmR2CjS3Z24govCQwJ7MUbSJFa9SFITTiWr0uP8AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T16:20:07.562790Z"},"content_sha256":"37614317906bd72ce430647f416b541932ea51d507e6b7487b2f4e06d2c8287e","schema_version":"1.0","event_id":"sha256:37614317906bd72ce430647f416b541932ea51d507e6b7487b2f4e06d2c8287e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EPQ5NPHEONTOHSHKMA62ZHII42/bundle.json","state_url":"https://pith.science/pith/EPQ5NPHEONTOHSHKMA62ZHII42/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EPQ5NPHEONTOHSHKMA62ZHII42/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":"2026-06-05T16:20:07Z","links":{"resolver":"https://pith.science/pith/EPQ5NPHEONTOHSHKMA62ZHII42","bundle":"https://pith.science/pith/EPQ5NPHEONTOHSHKMA62ZHII42/bundle.json","state":"https://pith.science/pith/EPQ5NPHEONTOHSHKMA62ZHII42/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EPQ5NPHEONTOHSHKMA62ZHII42/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:EPQ5NPHEONTOHSHKMA62ZHII42","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":"2bad0e833f2540e98cd465e03de6aa53713f61b987221669f381192e81123b41","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-07T19:51:18Z","title_canon_sha256":"35b10e4df1a4ecfe2fd74f39dca8fb64b4db79b554669f08bc10d1f9b268163d"},"schema_version":"1.0","source":{"id":"1407.1823","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1407.1823","created_at":"2026-05-18T02:43:34Z"},{"alias_kind":"arxiv_version","alias_value":"1407.1823v1","created_at":"2026-05-18T02:43:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1407.1823","created_at":"2026-05-18T02:43:34Z"},{"alias_kind":"pith_short_12","alias_value":"EPQ5NPHEONTO","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_16","alias_value":"EPQ5NPHEONTOHSHK","created_at":"2026-05-18T12:28:28Z"},{"alias_kind":"pith_short_8","alias_value":"EPQ5NPHE","created_at":"2026-05-18T12:28:28Z"}],"graph_snapshots":[{"event_id":"sha256:37614317906bd72ce430647f416b541932ea51d507e6b7487b2f4e06d2c8287e","target":"graph","created_at":"2026-05-18T02:43:34Z","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 understanding of interstellar nitrogen chemistry has improved significantly with recent results from the Herschel Space Observatory. To set even better constraints, we report here on deep searches for the NH+ ground state rotational transition J=1.5-0.5 of the ^2Pi_1/2 lower spin ladder, with fine-structure transitions at 1013 and 1019 GHz, and the para-NH2- 1_1,1-0_0,0 rotational transition at 934 GHz towards Sgr B2(M) and G10.6-0.4 using Herschel-HIFI. No clear detections of NH+ are made and the derived upper limits are <2*10^-12 and <7*10^-13 in Sgr B2(M) and G10.6-0.4, respectively. Th","authors_text":"{\\AA}. Hjalmarson, A.O.H. Olofsson, C.M. Persson, D.C. Lis, E. Herbst, E.S. Wirstr\\\"om, G.E. Hassel, H.M. Cuppen, H.S.P. M\\\"uller, J. Cernicharo, J.H. Black, K.M. Menten, M. Gerin, M. Hajigholi, M. Olberg","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-07T19:51:18Z","title":"Upper limits to interstellar NH+ and para-NH2- abundances. Herschel-HIFI observations towards Sgr B2 (M) and G10.6-0.4 (W31C)"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.1823","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":"sha256:15d24073f1e3d501ee4aae42bd04c4002407ad40b982e90d7857d487062fc2a2","target":"record","created_at":"2026-05-18T02:43:34Z","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":"2bad0e833f2540e98cd465e03de6aa53713f61b987221669f381192e81123b41","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2014-07-07T19:51:18Z","title_canon_sha256":"35b10e4df1a4ecfe2fd74f39dca8fb64b4db79b554669f08bc10d1f9b268163d"},"schema_version":"1.0","source":{"id":"1407.1823","kind":"arxiv","version":1}},"canonical_sha256":"23e1d6bce47366e3c8ea603dac9d08e694512320b0379246f07779c17baaf2e8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"23e1d6bce47366e3c8ea603dac9d08e694512320b0379246f07779c17baaf2e8","first_computed_at":"2026-05-18T02:43:34.448026Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:43:34.448026Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"K+9Ozs1erxzJJtE7jM7CEJNdgREpOneBAZ01d9Fyg/4T/Mu7ZF0S1n5L4+ZDwLqriZl2jqmonnSW/dQDadupCg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:43:34.448666Z","signed_message":"canonical_sha256_bytes"},"source_id":"1407.1823","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:15d24073f1e3d501ee4aae42bd04c4002407ad40b982e90d7857d487062fc2a2","sha256:37614317906bd72ce430647f416b541932ea51d507e6b7487b2f4e06d2c8287e"],"state_sha256":"912b950d26c042638c6a2a24730ec48b480ef5b2e841e9ff985f082ba47a3513"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XUZY49pKLD/VEucFfMf8Z+di2ZXHNgi24dtjyLbIDKO8zvzIiMGZJmdHSXUf1VDPqYM3YZgses5JZa+kUwlAAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T16:20:07.564857Z","bundle_sha256":"9e47c1ca63631d127a07c63db2c103612cae7ac8528525728a7f5aa6998194cf"}}