{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:PI3DU6LNPZCJWZENTIAZVV5XIX","short_pith_number":"pith:PI3DU6LN","canonical_record":{"source":{"id":"1807.03494","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-10T06:29:14Z","cross_cats_sorted":[],"title_canon_sha256":"77b441c3d38876345cbae48de4585bb407f4b7c4684621559c886884d0117c26","abstract_canon_sha256":"1b6a3e879c9e96744cdd831fbae4a08715bdef380575b02db30a4704d434f43e"},"schema_version":"1.0"},"canonical_sha256":"7a363a796d7e449b648d9a019ad7b745c398c42dc64a7fbab0e632037d44cd5a","source":{"kind":"arxiv","id":"1807.03494","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03494","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03494v2","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03494","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"pith_short_12","alias_value":"PI3DU6LNPZCJ","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"PI3DU6LNPZCJWZEN","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"PI3DU6LN","created_at":"2026-05-18T12:32:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:PI3DU6LNPZCJWZENTIAZVV5XIX","target":"record","payload":{"canonical_record":{"source":{"id":"1807.03494","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-10T06:29:14Z","cross_cats_sorted":[],"title_canon_sha256":"77b441c3d38876345cbae48de4585bb407f4b7c4684621559c886884d0117c26","abstract_canon_sha256":"1b6a3e879c9e96744cdd831fbae4a08715bdef380575b02db30a4704d434f43e"},"schema_version":"1.0"},"canonical_sha256":"7a363a796d7e449b648d9a019ad7b745c398c42dc64a7fbab0e632037d44cd5a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:18.936977Z","signature_b64":"menCS2KUeys2k+TkJ2epzIQPb9R7Zr/Sm7gRFoNAU/HqhmoKBwqaeZmlMdapBcUAPrjhISPdWxvgcvWYzhBADQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7a363a796d7e449b648d9a019ad7b745c398c42dc64a7fbab0e632037d44cd5a","last_reissued_at":"2026-05-18T00:00:18.936362Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:18.936362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.03494","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:00:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qmkU3xqm0OE8SjUWrzTFqJuv7vpC8MxXRFKVSIzFsfI/qOZ9JI+sNx2LLoDl4RnPVkPfVtnkJaDQ1wNeVN22Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T19:22:12.170130Z"},"content_sha256":"79814512c949607df389d85e56586791e93f7f20cd9a91d4281c61dedb6c13e2","schema_version":"1.0","event_id":"sha256:79814512c949607df389d85e56586791e93f7f20cd9a91d4281c61dedb6c13e2"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:PI3DU6LNPZCJWZENTIAZVV5XIX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Quiet-Sun and Coronal Hole in \\ion{Mg}{2}~k line as observed by IRIS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Durgesh Tripathi, Hardi Peter, Pradeep Kayshap, Sami K. Solanki","submitted_at":"2018-07-10T06:29:14Z","abstract_excerpt":"Coronal holes (CHs) regions are dark in comparison to the quiet-Sun (QS) at the coronal temperatures. However, at chromospheric and transition region (TR) temperatures, QS and CHs are hardly distinguishable. In this study we have used the \\ion{Mg}{2}~2796.35~{\\AA} spectral line recorded by the Interface Region Imaging Spectrometer (IRIS) to understand the similarities and differences in the QS and CH at chromospheric levels. Our analysis reveals that the emission from \\ion{Mg}{2}~k3 \\& k2v that originates in the chromosphere is significantly lower in CH than in QS for the regions with similar "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03494","kind":"arxiv","version":2},"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":"2026-05-18T00:00:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"O+CFqyF4DAUfQvMJ1MX1UX3m0jA2MqvjyYtOjZojFibDWZwVmNpZ2FH4ylwwWPyAa/HtgKCSczUaEoSpJDyQDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T19:22:12.171691Z"},"content_sha256":"44da50b6b0b65df0cf478cca2931a657ab0a4bcbcd22fbb91253167609225e5a","schema_version":"1.0","event_id":"sha256:44da50b6b0b65df0cf478cca2931a657ab0a4bcbcd22fbb91253167609225e5a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PI3DU6LNPZCJWZENTIAZVV5XIX/bundle.json","state_url":"https://pith.science/pith/PI3DU6LNPZCJWZENTIAZVV5XIX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PI3DU6LNPZCJWZENTIAZVV5XIX/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":"2026-05-19T19:22:12Z","links":{"resolver":"https://pith.science/pith/PI3DU6LNPZCJWZENTIAZVV5XIX","bundle":"https://pith.science/pith/PI3DU6LNPZCJWZENTIAZVV5XIX/bundle.json","state":"https://pith.science/pith/PI3DU6LNPZCJWZENTIAZVV5XIX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PI3DU6LNPZCJWZENTIAZVV5XIX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:PI3DU6LNPZCJWZENTIAZVV5XIX","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":"1b6a3e879c9e96744cdd831fbae4a08715bdef380575b02db30a4704d434f43e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-10T06:29:14Z","title_canon_sha256":"77b441c3d38876345cbae48de4585bb407f4b7c4684621559c886884d0117c26"},"schema_version":"1.0","source":{"id":"1807.03494","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.03494","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"arxiv_version","alias_value":"1807.03494v2","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.03494","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"pith_short_12","alias_value":"PI3DU6LNPZCJ","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"PI3DU6LNPZCJWZEN","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"PI3DU6LN","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:44da50b6b0b65df0cf478cca2931a657ab0a4bcbcd22fbb91253167609225e5a","target":"graph","created_at":"2026-05-18T00:00:18Z","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":"Coronal holes (CHs) regions are dark in comparison to the quiet-Sun (QS) at the coronal temperatures. However, at chromospheric and transition region (TR) temperatures, QS and CHs are hardly distinguishable. In this study we have used the \\ion{Mg}{2}~2796.35~{\\AA} spectral line recorded by the Interface Region Imaging Spectrometer (IRIS) to understand the similarities and differences in the QS and CH at chromospheric levels. Our analysis reveals that the emission from \\ion{Mg}{2}~k3 \\& k2v that originates in the chromosphere is significantly lower in CH than in QS for the regions with similar ","authors_text":"Durgesh Tripathi, Hardi Peter, Pradeep Kayshap, Sami K. Solanki","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-10T06:29:14Z","title":"Quiet-Sun and Coronal Hole in \\ion{Mg}{2}~k line as observed by IRIS"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.03494","kind":"arxiv","version":2},"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":"sha256:79814512c949607df389d85e56586791e93f7f20cd9a91d4281c61dedb6c13e2","target":"record","created_at":"2026-05-18T00:00:18Z","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":"1b6a3e879c9e96744cdd831fbae4a08715bdef380575b02db30a4704d434f43e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-10T06:29:14Z","title_canon_sha256":"77b441c3d38876345cbae48de4585bb407f4b7c4684621559c886884d0117c26"},"schema_version":"1.0","source":{"id":"1807.03494","kind":"arxiv","version":2}},"canonical_sha256":"7a363a796d7e449b648d9a019ad7b745c398c42dc64a7fbab0e632037d44cd5a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7a363a796d7e449b648d9a019ad7b745c398c42dc64a7fbab0e632037d44cd5a","first_computed_at":"2026-05-18T00:00:18.936362Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:18.936362Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"menCS2KUeys2k+TkJ2epzIQPb9R7Zr/Sm7gRFoNAU/HqhmoKBwqaeZmlMdapBcUAPrjhISPdWxvgcvWYzhBADQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:18.936977Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.03494","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:79814512c949607df389d85e56586791e93f7f20cd9a91d4281c61dedb6c13e2","sha256:44da50b6b0b65df0cf478cca2931a657ab0a4bcbcd22fbb91253167609225e5a"],"state_sha256":"5a135a2b3ba8acc78ccef77dee40f70a7eef05c5a8515c822367059dc1006dc9"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uQ8bVCuXzX6wD0JFwqpi4xhZi2I9OVq9kXS5k3yo3LJqQTup1Ut4YFGcFBXBSznY2pRyINDW9LbxfN5IWvUGBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T19:22:12.176167Z","bundle_sha256":"31498353a8ab5014f9d7f9913bd79585c4e0f8c1a3d3b664093ef78ed0cd5043"}}