{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:6SOODCZHEOBXQDBUZQ37RSIKWM","short_pith_number":"pith:6SOODCZH","canonical_record":{"source":{"id":"2404.05628","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-08T16:00:07Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"48cdf1dc8dc303fcac081397152e1a244162f970dfd0a31d28ebef85a89e95e8","abstract_canon_sha256":"5c6f0c8947d0b81e4f2bddaf4a88a0119de88643ba334d6e4a8052eabf966322"},"schema_version":"1.0"},"canonical_sha256":"f49ce18b272383780c34cc37f8c90ab31a303146f6299cb85f14986e745ebdcc","source":{"kind":"arxiv","id":"2404.05628","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.05628","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"arxiv_version","alias_value":"2404.05628v1","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.05628","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"pith_short_12","alias_value":"6SOODCZHEOBX","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"pith_short_16","alias_value":"6SOODCZHEOBXQDBU","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"pith_short_8","alias_value":"6SOODCZH","created_at":"2026-07-05T08:05:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:6SOODCZHEOBXQDBUZQ37RSIKWM","target":"record","payload":{"canonical_record":{"source":{"id":"2404.05628","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-08T16:00:07Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"48cdf1dc8dc303fcac081397152e1a244162f970dfd0a31d28ebef85a89e95e8","abstract_canon_sha256":"5c6f0c8947d0b81e4f2bddaf4a88a0119de88643ba334d6e4a8052eabf966322"},"schema_version":"1.0"},"canonical_sha256":"f49ce18b272383780c34cc37f8c90ab31a303146f6299cb85f14986e745ebdcc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:05:43.543078Z","signature_b64":"kUuItCp/dC6uO5/JSjHq2pTrgjbEpCtdWBKr+hKGwRwlhLWxkStRTgYiOBLszcBwBQmfZHtcKTfluiYgAYzABw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f49ce18b272383780c34cc37f8c90ab31a303146f6299cb85f14986e745ebdcc","last_reissued_at":"2026-07-05T08:05:43.542645Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:05:43.542645Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2404.05628","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":"2026-07-05T08:05:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"88ZyTrlHoFy+9SlMmfrPvGJGEOdzvZQji4Lawzj0pLzEfEpFM3/AzU48dRa9Rh7Nzww7gpiJzOjRojOwf/83Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:34:23.276865Z"},"content_sha256":"3c5363dbc5aa9d21c733542ed6321d4896a80ce3211765603dc40483aee9c320","schema_version":"1.0","event_id":"sha256:3c5363dbc5aa9d21c733542ed6321d4896a80ce3211765603dc40483aee9c320"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:6SOODCZHEOBXQDBUZQ37RSIKWM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"eDIG-CHANGES II: Project Design and Initial Results on NGC 3556","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Andrew W. Strong, Carlos J. Vargas, Guilin Liu, Hui Li, Jayanne English, Jianghui Xu, Jiang-Tao Li, Jing Wang, Joel N. Bregman, Judith A. Irwin, Li-Yuan Lu, Paul Martini, Q. Daniel Wang, Ralf-Jurgen Dettmar, Richard J. Rand, Robert A. Benjamin, Taotao Fang, Theresa Wiegert, Yang Yang, Yan Jiang, Yelena Stein, Zhijie Qu","submitted_at":"2024-04-08T16:00:07Z","abstract_excerpt":"The extraplanar diffuse ionized gas (eDIG) represents ionized gases traced by optical/UV lines beyond the stellar extent of galaxies. We herein introduce a novel multi-slit narrow-band spectroscopy method to conduct spatially resolved spectroscopy of the eDIG around a sample of nearby edge-on disk galaxies (eDIG-CHANGES). In this paper, we introduce the project design and major scientific goals, as well as a pilot study of NGC 3556 (M108). The eDIG is detected to a vertical extent of a few kpc above the disk, comparable to the X-ray and radio images. We do not see significant vertical variatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.05628","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/2404.05628/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":"2026-07-05T08:05:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tKiySWLJ+8xMZtO66pyk+KElH+v8wiwClKumWNs9pbgQm+Ae5pNZBO+N3JrDjhAobmLMl/f49eALn5WooUpBCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T18:34:23.277361Z"},"content_sha256":"524cd9f43c09d647a9c4144ea771420ff95b19ae9fd433cb5a77c1ffa78f3e3e","schema_version":"1.0","event_id":"sha256:524cd9f43c09d647a9c4144ea771420ff95b19ae9fd433cb5a77c1ffa78f3e3e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6SOODCZHEOBXQDBUZQ37RSIKWM/bundle.json","state_url":"https://pith.science/pith/6SOODCZHEOBXQDBUZQ37RSIKWM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6SOODCZHEOBXQDBUZQ37RSIKWM/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":"2026-08-05T18:34:23Z","links":{"resolver":"https://pith.science/pith/6SOODCZHEOBXQDBUZQ37RSIKWM","bundle":"https://pith.science/pith/6SOODCZHEOBXQDBUZQ37RSIKWM/bundle.json","state":"https://pith.science/pith/6SOODCZHEOBXQDBUZQ37RSIKWM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6SOODCZHEOBXQDBUZQ37RSIKWM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:6SOODCZHEOBXQDBUZQ37RSIKWM","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":"5c6f0c8947d0b81e4f2bddaf4a88a0119de88643ba334d6e4a8052eabf966322","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-08T16:00:07Z","title_canon_sha256":"48cdf1dc8dc303fcac081397152e1a244162f970dfd0a31d28ebef85a89e95e8"},"schema_version":"1.0","source":{"id":"2404.05628","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2404.05628","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"arxiv_version","alias_value":"2404.05628v1","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.05628","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"pith_short_12","alias_value":"6SOODCZHEOBX","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"pith_short_16","alias_value":"6SOODCZHEOBXQDBU","created_at":"2026-07-05T08:05:43Z"},{"alias_kind":"pith_short_8","alias_value":"6SOODCZH","created_at":"2026-07-05T08:05:43Z"}],"graph_snapshots":[{"event_id":"sha256:524cd9f43c09d647a9c4144ea771420ff95b19ae9fd433cb5a77c1ffa78f3e3e","target":"graph","created_at":"2026-07-05T08:05:43Z","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/2404.05628/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The extraplanar diffuse ionized gas (eDIG) represents ionized gases traced by optical/UV lines beyond the stellar extent of galaxies. We herein introduce a novel multi-slit narrow-band spectroscopy method to conduct spatially resolved spectroscopy of the eDIG around a sample of nearby edge-on disk galaxies (eDIG-CHANGES). In this paper, we introduce the project design and major scientific goals, as well as a pilot study of NGC 3556 (M108). The eDIG is detected to a vertical extent of a few kpc above the disk, comparable to the X-ray and radio images. We do not see significant vertical variatio","authors_text":"Andrew W. Strong, Carlos J. Vargas, Guilin Liu, Hui Li, Jayanne English, Jianghui Xu, Jiang-Tao Li, Jing Wang, Joel N. Bregman, Judith A. Irwin, Li-Yuan Lu, Paul Martini, Q. Daniel Wang, Ralf-Jurgen Dettmar, Richard J. Rand, Robert A. Benjamin, Taotao Fang, Theresa Wiegert, Yang Yang, Yan Jiang, Yelena Stein, Zhijie Qu","cross_cats":["astro-ph.HE"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-08T16:00:07Z","title":"eDIG-CHANGES II: Project Design and Initial Results on NGC 3556"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.05628","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":"sha256:3c5363dbc5aa9d21c733542ed6321d4896a80ce3211765603dc40483aee9c320","target":"record","created_at":"2026-07-05T08:05:43Z","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":"5c6f0c8947d0b81e4f2bddaf4a88a0119de88643ba334d6e4a8052eabf966322","cross_cats_sorted":["astro-ph.HE"],"license":"http://creativecommons.org/licenses/by-nc-sa/4.0/","primary_cat":"astro-ph.GA","submitted_at":"2024-04-08T16:00:07Z","title_canon_sha256":"48cdf1dc8dc303fcac081397152e1a244162f970dfd0a31d28ebef85a89e95e8"},"schema_version":"1.0","source":{"id":"2404.05628","kind":"arxiv","version":1}},"canonical_sha256":"f49ce18b272383780c34cc37f8c90ab31a303146f6299cb85f14986e745ebdcc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f49ce18b272383780c34cc37f8c90ab31a303146f6299cb85f14986e745ebdcc","first_computed_at":"2026-07-05T08:05:43.542645Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:05:43.542645Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kUuItCp/dC6uO5/JSjHq2pTrgjbEpCtdWBKr+hKGwRwlhLWxkStRTgYiOBLszcBwBQmfZHtcKTfluiYgAYzABw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:05:43.543078Z","signed_message":"canonical_sha256_bytes"},"source_id":"2404.05628","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c5363dbc5aa9d21c733542ed6321d4896a80ce3211765603dc40483aee9c320","sha256:524cd9f43c09d647a9c4144ea771420ff95b19ae9fd433cb5a77c1ffa78f3e3e"],"state_sha256":"15947624dfbb54347a2647fedd4996a2913642103b91684ab021c4371e7acf94"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5PaVSrnwgAFGXMW6avcZIfPQy8KLuK1fRNU4VaYAEE+8+a1i9effxCPjH/DhF0neokQ29CtPEu8BIZoTeo7sCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T18:34:23.281136Z","bundle_sha256":"6da6e5ff6eee328d42e4e684fff57c5c9ae940a594d13d1d874725c3e5c17221"}}