{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:X53ES4LMIQZ4ZHPZBX2ADAMNB7","short_pith_number":"pith:X53ES4LM","canonical_record":{"source":{"id":"1411.1075","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-04T21:01:31Z","cross_cats_sorted":[],"title_canon_sha256":"ab5d75e3a5135d59ef74001ff7da40d4211ff59215d9ebb3b32d9b3b9d516af8","abstract_canon_sha256":"0583bf9da827e1906ec196145447176051719001b2451b39a5c749ed5606217e"},"schema_version":"1.0"},"canonical_sha256":"bf7649716c4433cc9df90df401818d0fe87c65d3965a41ed42a6ff81f2ab68df","source":{"kind":"arxiv","id":"1411.1075","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.1075","created_at":"2026-05-18T02:29:31Z"},{"alias_kind":"arxiv_version","alias_value":"1411.1075v1","created_at":"2026-05-18T02:29:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.1075","created_at":"2026-05-18T02:29:31Z"},{"alias_kind":"pith_short_12","alias_value":"X53ES4LMIQZ4","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"X53ES4LMIQZ4ZHPZ","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"X53ES4LM","created_at":"2026-05-18T12:28:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:X53ES4LMIQZ4ZHPZBX2ADAMNB7","target":"record","payload":{"canonical_record":{"source":{"id":"1411.1075","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-04T21:01:31Z","cross_cats_sorted":[],"title_canon_sha256":"ab5d75e3a5135d59ef74001ff7da40d4211ff59215d9ebb3b32d9b3b9d516af8","abstract_canon_sha256":"0583bf9da827e1906ec196145447176051719001b2451b39a5c749ed5606217e"},"schema_version":"1.0"},"canonical_sha256":"bf7649716c4433cc9df90df401818d0fe87c65d3965a41ed42a6ff81f2ab68df","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:29:31.367887Z","signature_b64":"rfWSS1ZMHxFSso1SYsY4k1I+cRp+sI/0ymrAFDM7w806vksvLLTMnvXboKXagkHDMVAStWwLvpUm/eB+e6w/Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bf7649716c4433cc9df90df401818d0fe87c65d3965a41ed42a6ff81f2ab68df","last_reissued_at":"2026-05-18T02:29:31.367334Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:29:31.367334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1411.1075","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":"2026-05-18T02:29:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"48Dc9mkzfxiHUwYx5qJ4MBkcNqwjH6LArrBXA83FC18PahL6pYuLFBq545WCmK46VXYo8mEAWNynUBtjjJGgCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T03:38:01.497390Z"},"content_sha256":"844f5742223d71259e5a80c575d81f0273108d70b12d5830df6a4b13b4240eb7","schema_version":"1.0","event_id":"sha256:844f5742223d71259e5a80c575d81f0273108d70b12d5830df6a4b13b4240eb7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:X53ES4LMIQZ4ZHPZBX2ADAMNB7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hot Ammonia around Young O-type Stars. II. JVLA imaging of highly-excited metastable ammonia masers in W51-North","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Christian Henkel, Ciriaco Goddi, Luis Zapata, Qizhou Zhang, Thomas L. Wilson","submitted_at":"2014-11-04T21:01:31Z","abstract_excerpt":"We have used the JVLA at the 1 cm band to map five highly-excited metastable inversion transitions of ammonia, (J,K)=(6,6), (7,7), (9,9), (10,10), and (13,13), in W51 IRS2 with ~0.2 angular resolution. We present detections of both thermal (extended) ammonia emission in the five inversion lines, with rotational states ranging in energy from about 400 to 1700 K, and point-like ammonia maser emission in the (6,6), (7,7), and (9,9) lines. The thermal ammonia emits around a velocity of 60 km/s, near the cloud's systemic velocity, is elongated in the east-west direction across 4\" and is confined by"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.1075","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":"2026-05-18T02:29:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"nIrw/yE0CCyLz32bjJcsiI5HbfZrWF2EOCAfV4r4QI5cijRipKGeNLq22rkhk7Zxgep97bXV1OLzMl5S17ltDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T03:38:01.497740Z"},"content_sha256":"5422b488a8ce755cd66c01dba50bac2f9a645c00704ba1d61766088eae5e9596","schema_version":"1.0","event_id":"sha256:5422b488a8ce755cd66c01dba50bac2f9a645c00704ba1d61766088eae5e9596"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/X53ES4LMIQZ4ZHPZBX2ADAMNB7/bundle.json","state_url":"https://pith.science/pith/X53ES4LMIQZ4ZHPZBX2ADAMNB7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/X53ES4LMIQZ4ZHPZBX2ADAMNB7/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":"2026-06-03T03:38:01Z","links":{"resolver":"https://pith.science/pith/X53ES4LMIQZ4ZHPZBX2ADAMNB7","bundle":"https://pith.science/pith/X53ES4LMIQZ4ZHPZBX2ADAMNB7/bundle.json","state":"https://pith.science/pith/X53ES4LMIQZ4ZHPZBX2ADAMNB7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/X53ES4LMIQZ4ZHPZBX2ADAMNB7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:X53ES4LMIQZ4ZHPZBX2ADAMNB7","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":"0583bf9da827e1906ec196145447176051719001b2451b39a5c749ed5606217e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-04T21:01:31Z","title_canon_sha256":"ab5d75e3a5135d59ef74001ff7da40d4211ff59215d9ebb3b32d9b3b9d516af8"},"schema_version":"1.0","source":{"id":"1411.1075","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1411.1075","created_at":"2026-05-18T02:29:31Z"},{"alias_kind":"arxiv_version","alias_value":"1411.1075v1","created_at":"2026-05-18T02:29:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.1075","created_at":"2026-05-18T02:29:31Z"},{"alias_kind":"pith_short_12","alias_value":"X53ES4LMIQZ4","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_16","alias_value":"X53ES4LMIQZ4ZHPZ","created_at":"2026-05-18T12:28:54Z"},{"alias_kind":"pith_short_8","alias_value":"X53ES4LM","created_at":"2026-05-18T12:28:54Z"}],"graph_snapshots":[{"event_id":"sha256:5422b488a8ce755cd66c01dba50bac2f9a645c00704ba1d61766088eae5e9596","target":"graph","created_at":"2026-05-18T02:29:31Z","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":"We have used the JVLA at the 1 cm band to map five highly-excited metastable inversion transitions of ammonia, (J,K)=(6,6), (7,7), (9,9), (10,10), and (13,13), in W51 IRS2 with ~0.2 angular resolution. We present detections of both thermal (extended) ammonia emission in the five inversion lines, with rotational states ranging in energy from about 400 to 1700 K, and point-like ammonia maser emission in the (6,6), (7,7), and (9,9) lines. The thermal ammonia emits around a velocity of 60 km/s, near the cloud's systemic velocity, is elongated in the east-west direction across 4\" and is confined by","authors_text":"Christian Henkel, Ciriaco Goddi, Luis Zapata, Qizhou Zhang, Thomas L. Wilson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-04T21:01:31Z","title":"Hot Ammonia around Young O-type Stars. II. JVLA imaging of highly-excited metastable ammonia masers in W51-North"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.1075","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":"sha256:844f5742223d71259e5a80c575d81f0273108d70b12d5830df6a4b13b4240eb7","target":"record","created_at":"2026-05-18T02:29:31Z","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":"0583bf9da827e1906ec196145447176051719001b2451b39a5c749ed5606217e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2014-11-04T21:01:31Z","title_canon_sha256":"ab5d75e3a5135d59ef74001ff7da40d4211ff59215d9ebb3b32d9b3b9d516af8"},"schema_version":"1.0","source":{"id":"1411.1075","kind":"arxiv","version":1}},"canonical_sha256":"bf7649716c4433cc9df90df401818d0fe87c65d3965a41ed42a6ff81f2ab68df","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bf7649716c4433cc9df90df401818d0fe87c65d3965a41ed42a6ff81f2ab68df","first_computed_at":"2026-05-18T02:29:31.367334Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:29:31.367334Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rfWSS1ZMHxFSso1SYsY4k1I+cRp+sI/0ymrAFDM7w806vksvLLTMnvXboKXagkHDMVAStWwLvpUm/eB+e6w/Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T02:29:31.367887Z","signed_message":"canonical_sha256_bytes"},"source_id":"1411.1075","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:844f5742223d71259e5a80c575d81f0273108d70b12d5830df6a4b13b4240eb7","sha256:5422b488a8ce755cd66c01dba50bac2f9a645c00704ba1d61766088eae5e9596"],"state_sha256":"db79bec6af1c83d6bd4adee18a4e6c06b7931ee4cce031da4438be37e636e6fb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bbekkzl2fA5WjKtSUNnjwMX9nmGo6rXUotDkG/hm56w/E9W29VSOYUnQa66R0c68AoKHrIGDVHgcqagXGsJoAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T03:38:01.499639Z","bundle_sha256":"771225b0e91ab8227096b643e776b36fa28e40c264f87407141bea00165e023a"}}