{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:IZ4SUGVTW3UBW4S7EEGMXC5Q2T","short_pith_number":"pith:IZ4SUGVT","canonical_record":{"source":{"id":"1902.08671","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-22T21:26:28Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"dcf5938135248fc0a6f85e7ef73a692ac9805107510b706802d4a6885e0c7fa7","abstract_canon_sha256":"5d748da83f83c281767c3cf0d840c85b0758695d50ee65cdb67ec2577acddf17"},"schema_version":"1.0"},"canonical_sha256":"46792a1ab3b6e81b725f210ccb8bb0d4f175db6208279be02d6a9f5897126f62","source":{"kind":"arxiv","id":"1902.08671","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.08671","created_at":"2026-05-17T23:47:16Z"},{"alias_kind":"arxiv_version","alias_value":"1902.08671v1","created_at":"2026-05-17T23:47:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.08671","created_at":"2026-05-17T23:47:16Z"},{"alias_kind":"pith_short_12","alias_value":"IZ4SUGVTW3UB","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"IZ4SUGVTW3UBW4S7","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"IZ4SUGVT","created_at":"2026-05-18T12:33:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:IZ4SUGVTW3UBW4S7EEGMXC5Q2T","target":"record","payload":{"canonical_record":{"source":{"id":"1902.08671","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-22T21:26:28Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"dcf5938135248fc0a6f85e7ef73a692ac9805107510b706802d4a6885e0c7fa7","abstract_canon_sha256":"5d748da83f83c281767c3cf0d840c85b0758695d50ee65cdb67ec2577acddf17"},"schema_version":"1.0"},"canonical_sha256":"46792a1ab3b6e81b725f210ccb8bb0d4f175db6208279be02d6a9f5897126f62","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:16.990705Z","signature_b64":"yD36QYbpwdXsU2hJruVoT8tkMa5Z2pFgYtQWM86rZlqjzwImQVcD00ylG/E/ZKxz59HGlc7ivWM3PpuIHcf6CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"46792a1ab3b6e81b725f210ccb8bb0d4f175db6208279be02d6a9f5897126f62","last_reissued_at":"2026-05-17T23:47:16.990301Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:16.990301Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.08671","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":"2026-05-17T23:47:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4LAb6R9mhwqmnzSNexihx5lXz7z+fLUWWB1i6ae0E5AXCv/eq4+tCj+p5MHkboR581qPtjRqrs/xxLXQ2BR0Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T11:20:41.003183Z"},"content_sha256":"e664cc0b8026f954e6ca4d249657dd935412419ffc2e66b2b0312a1b4f8bf2e2","schema_version":"1.0","event_id":"sha256:e664cc0b8026f954e6ca4d249657dd935412419ffc2e66b2b0312a1b4f8bf2e2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:IZ4SUGVTW3UBW4S7EEGMXC5Q2T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optical observations of the nearby galaxy NGC 2366 through narrowband H$\\alpha$ and SII filters. Supernova remnants status","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"A. \\'Ciprijanovi\\'c, D. Oni\\'c, M. M. Vu\\v{c}eti\\'c, M. Z. Pavlovi\\'c, N. Petrov","submitted_at":"2019-02-22T21:26:28Z","abstract_excerpt":"We present detection of 67 HII regions and two optical supernova remnant (SNR) candidates in the nearby irregular galaxy NGC 2366. The SNR candidates were detected by applying [SII]/H$\\alpha$ ratio criterion to observations made with the 2-m RCC telescope at Rozhen National Astronomical Observatory in Bulgaria. In this paper we report coordinates, diameters, H$\\alpha$ and [SII] fluxes for detected objects across the two fields of view in NGC 2366 galaxy. Using archival XMM-Newton observations we suggest possible X-ray counterparts of two optical SNR candidates. Also, we discard classification "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.08671","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":"2026-05-17T23:47:16Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DuubpCTRR68tarKoTwR1dGpqQCIZxNUbj6ZgAlaEevLAb+ZU04jUEEEY7JpMQZEM1OMGopcwRtI0KfkAq4qfCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-05T11:20:41.003542Z"},"content_sha256":"31dc4800c3d990bbc917ce2a7573a20b6cf515996d45471901f6a0ca308c960a","schema_version":"1.0","event_id":"sha256:31dc4800c3d990bbc917ce2a7573a20b6cf515996d45471901f6a0ca308c960a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IZ4SUGVTW3UBW4S7EEGMXC5Q2T/bundle.json","state_url":"https://pith.science/pith/IZ4SUGVTW3UBW4S7EEGMXC5Q2T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IZ4SUGVTW3UBW4S7EEGMXC5Q2T/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":"2026-07-05T11:20:41Z","links":{"resolver":"https://pith.science/pith/IZ4SUGVTW3UBW4S7EEGMXC5Q2T","bundle":"https://pith.science/pith/IZ4SUGVTW3UBW4S7EEGMXC5Q2T/bundle.json","state":"https://pith.science/pith/IZ4SUGVTW3UBW4S7EEGMXC5Q2T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IZ4SUGVTW3UBW4S7EEGMXC5Q2T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:IZ4SUGVTW3UBW4S7EEGMXC5Q2T","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":"5d748da83f83c281767c3cf0d840c85b0758695d50ee65cdb67ec2577acddf17","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-22T21:26:28Z","title_canon_sha256":"dcf5938135248fc0a6f85e7ef73a692ac9805107510b706802d4a6885e0c7fa7"},"schema_version":"1.0","source":{"id":"1902.08671","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.08671","created_at":"2026-05-17T23:47:16Z"},{"alias_kind":"arxiv_version","alias_value":"1902.08671v1","created_at":"2026-05-17T23:47:16Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.08671","created_at":"2026-05-17T23:47:16Z"},{"alias_kind":"pith_short_12","alias_value":"IZ4SUGVTW3UB","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"IZ4SUGVTW3UBW4S7","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"IZ4SUGVT","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:31dc4800c3d990bbc917ce2a7573a20b6cf515996d45471901f6a0ca308c960a","target":"graph","created_at":"2026-05-17T23:47:16Z","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 present detection of 67 HII regions and two optical supernova remnant (SNR) candidates in the nearby irregular galaxy NGC 2366. The SNR candidates were detected by applying [SII]/H$\\alpha$ ratio criterion to observations made with the 2-m RCC telescope at Rozhen National Astronomical Observatory in Bulgaria. In this paper we report coordinates, diameters, H$\\alpha$ and [SII] fluxes for detected objects across the two fields of view in NGC 2366 galaxy. Using archival XMM-Newton observations we suggest possible X-ray counterparts of two optical SNR candidates. Also, we discard classification ","authors_text":"A. \\'Ciprijanovi\\'c, D. Oni\\'c, M. M. Vu\\v{c}eti\\'c, M. Z. Pavlovi\\'c, N. Petrov","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-22T21:26:28Z","title":"Optical observations of the nearby galaxy NGC 2366 through narrowband H$\\alpha$ and SII filters. Supernova remnants status"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.08671","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:e664cc0b8026f954e6ca4d249657dd935412419ffc2e66b2b0312a1b4f8bf2e2","target":"record","created_at":"2026-05-17T23:47:16Z","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":"5d748da83f83c281767c3cf0d840c85b0758695d50ee65cdb67ec2577acddf17","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2019-02-22T21:26:28Z","title_canon_sha256":"dcf5938135248fc0a6f85e7ef73a692ac9805107510b706802d4a6885e0c7fa7"},"schema_version":"1.0","source":{"id":"1902.08671","kind":"arxiv","version":1}},"canonical_sha256":"46792a1ab3b6e81b725f210ccb8bb0d4f175db6208279be02d6a9f5897126f62","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"46792a1ab3b6e81b725f210ccb8bb0d4f175db6208279be02d6a9f5897126f62","first_computed_at":"2026-05-17T23:47:16.990301Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:47:16.990301Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yD36QYbpwdXsU2hJruVoT8tkMa5Z2pFgYtQWM86rZlqjzwImQVcD00ylG/E/ZKxz59HGlc7ivWM3PpuIHcf6CA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:47:16.990705Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.08671","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e664cc0b8026f954e6ca4d249657dd935412419ffc2e66b2b0312a1b4f8bf2e2","sha256:31dc4800c3d990bbc917ce2a7573a20b6cf515996d45471901f6a0ca308c960a"],"state_sha256":"b90d792f66ba1a538286d0c1a2aedeff8756380fbc9fccdc29ff140cf2268115"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"JzgFLrCPIy42uMeREUv15yfV6rC3ee5UdEMTa73A8K7SQkn661myEenREzis8682jO2T44yW9uSbZ5dsSGumAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-05T11:20:41.005453Z","bundle_sha256":"edd40e3ae757f2175b9b206f2e7d61dc8148ef365fbc95e607950b88c1ec47d5"}}