{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:W35QO2WHGEW5LCRIH4KKU3CZFU","short_pith_number":"pith:W35QO2WH","canonical_record":{"source":{"id":"1710.06807","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-18T16:02:37Z","cross_cats_sorted":[],"title_canon_sha256":"a31d1d27ec5d61b99ba276e2a92232829ef32aa91125620b3cd64603e3a693f2","abstract_canon_sha256":"4f78563a99f52d8e3ea47ed77dfb1ea137e88366ecc11e3270ca5fb07eb5285c"},"schema_version":"1.0"},"canonical_sha256":"b6fb076ac7312dd58a283f14aa6c592d3a107cd22766b0db171981b274f77255","source":{"kind":"arxiv","id":"1710.06807","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.06807","created_at":"2026-05-18T00:32:32Z"},{"alias_kind":"arxiv_version","alias_value":"1710.06807v1","created_at":"2026-05-18T00:32:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.06807","created_at":"2026-05-18T00:32:32Z"},{"alias_kind":"pith_short_12","alias_value":"W35QO2WHGEW5","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"W35QO2WHGEW5LCRI","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"W35QO2WH","created_at":"2026-05-18T12:31:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:W35QO2WHGEW5LCRIH4KKU3CZFU","target":"record","payload":{"canonical_record":{"source":{"id":"1710.06807","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-18T16:02:37Z","cross_cats_sorted":[],"title_canon_sha256":"a31d1d27ec5d61b99ba276e2a92232829ef32aa91125620b3cd64603e3a693f2","abstract_canon_sha256":"4f78563a99f52d8e3ea47ed77dfb1ea137e88366ecc11e3270ca5fb07eb5285c"},"schema_version":"1.0"},"canonical_sha256":"b6fb076ac7312dd58a283f14aa6c592d3a107cd22766b0db171981b274f77255","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:32:32.064108Z","signature_b64":"rt2J3vS+AkOLnSKysM/WWSMAzS6owUbIY+ifGYO3/lxGsuC+uymsXo8HHUdA+DbiU0CCB4g80YEzqm5N1WDYAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b6fb076ac7312dd58a283f14aa6c592d3a107cd22766b0db171981b274f77255","last_reissued_at":"2026-05-18T00:32:32.063281Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:32:32.063281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.06807","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":"2026-05-18T00:32:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M8ZN9M2rhGfpUTSv6FiuMjqW/C3RneBFJINs0elK1ut1F6xpz+oTngyhooH8aguaWLrcpL9WzxF0qZNbRTfnAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T09:08:53.361581Z"},"content_sha256":"4e4234d62e6529fa83aa3fc87a5ecaddfb7e3064128a8d06e187a7fe151458cb","schema_version":"1.0","event_id":"sha256:4e4234d62e6529fa83aa3fc87a5ecaddfb7e3064128a8d06e187a7fe151458cb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:W35QO2WHGEW5LCRIH4KKU3CZFU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Why Is Non-thermal Line Broadening of Spectral Lines in The Lower Transition Region of the Sun Independent of Spatial Resolution?","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"Bart De Pontieu, Hardi Peter, Juan Martinez-Sykora, Scott McIntosh, Tiago Pereira","submitted_at":"2017-10-18T16:02:37Z","abstract_excerpt":"Spectral observations of the solar transition region (TR) and corona show broadening of spectral lines beyond what is expected from thermal and instrumental broadening. The remaining non-thermal broadening is significant (5-30 km/s) and correlated with the intensity. Here we study spectra of the TR Si IV 1403 Angstrom line obtained at high resolution with the Interface Region Imaging Spectrograph (IRIS). We find that the large improvement in spatial resolution (0.33 arcsec) of IRIS compared to previous spectrographs (2 arcsec) does not resolve the non-thermal line broadening which in most regi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.06807","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":"2026-05-18T00:32:32Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8ON5on1ZETl6DVg74Xz2xmF4h5xa4s1iW5EZN0IFntDgrzH0dlstAF4nTMbsqMDAprmCbXdZxFd3nokmWGp6CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T09:08:53.362301Z"},"content_sha256":"24c7cf8d55ca2cd1850c4b76a51aff1770ad3535ec91922be51d2d34e9ee78e1","schema_version":"1.0","event_id":"sha256:24c7cf8d55ca2cd1850c4b76a51aff1770ad3535ec91922be51d2d34e9ee78e1"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/W35QO2WHGEW5LCRIH4KKU3CZFU/bundle.json","state_url":"https://pith.science/pith/W35QO2WHGEW5LCRIH4KKU3CZFU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/W35QO2WHGEW5LCRIH4KKU3CZFU/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":"2026-05-19T09:08:53Z","links":{"resolver":"https://pith.science/pith/W35QO2WHGEW5LCRIH4KKU3CZFU","bundle":"https://pith.science/pith/W35QO2WHGEW5LCRIH4KKU3CZFU/bundle.json","state":"https://pith.science/pith/W35QO2WHGEW5LCRIH4KKU3CZFU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/W35QO2WHGEW5LCRIH4KKU3CZFU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:W35QO2WHGEW5LCRIH4KKU3CZFU","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":"4f78563a99f52d8e3ea47ed77dfb1ea137e88366ecc11e3270ca5fb07eb5285c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-18T16:02:37Z","title_canon_sha256":"a31d1d27ec5d61b99ba276e2a92232829ef32aa91125620b3cd64603e3a693f2"},"schema_version":"1.0","source":{"id":"1710.06807","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.06807","created_at":"2026-05-18T00:32:32Z"},{"alias_kind":"arxiv_version","alias_value":"1710.06807v1","created_at":"2026-05-18T00:32:32Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.06807","created_at":"2026-05-18T00:32:32Z"},{"alias_kind":"pith_short_12","alias_value":"W35QO2WHGEW5","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"W35QO2WHGEW5LCRI","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"W35QO2WH","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:24c7cf8d55ca2cd1850c4b76a51aff1770ad3535ec91922be51d2d34e9ee78e1","target":"graph","created_at":"2026-05-18T00:32:32Z","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":"Spectral observations of the solar transition region (TR) and corona show broadening of spectral lines beyond what is expected from thermal and instrumental broadening. The remaining non-thermal broadening is significant (5-30 km/s) and correlated with the intensity. Here we study spectra of the TR Si IV 1403 Angstrom line obtained at high resolution with the Interface Region Imaging Spectrograph (IRIS). We find that the large improvement in spatial resolution (0.33 arcsec) of IRIS compared to previous spectrographs (2 arcsec) does not resolve the non-thermal line broadening which in most regi","authors_text":"Bart De Pontieu, Hardi Peter, Juan Martinez-Sykora, Scott McIntosh, Tiago Pereira","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-18T16:02:37Z","title":"Why Is Non-thermal Line Broadening of Spectral Lines in The Lower Transition Region of the Sun Independent of Spatial Resolution?"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.06807","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":"sha256:4e4234d62e6529fa83aa3fc87a5ecaddfb7e3064128a8d06e187a7fe151458cb","target":"record","created_at":"2026-05-18T00:32:32Z","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":"4f78563a99f52d8e3ea47ed77dfb1ea137e88366ecc11e3270ca5fb07eb5285c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-10-18T16:02:37Z","title_canon_sha256":"a31d1d27ec5d61b99ba276e2a92232829ef32aa91125620b3cd64603e3a693f2"},"schema_version":"1.0","source":{"id":"1710.06807","kind":"arxiv","version":1}},"canonical_sha256":"b6fb076ac7312dd58a283f14aa6c592d3a107cd22766b0db171981b274f77255","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b6fb076ac7312dd58a283f14aa6c592d3a107cd22766b0db171981b274f77255","first_computed_at":"2026-05-18T00:32:32.063281Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:32:32.063281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rt2J3vS+AkOLnSKysM/WWSMAzS6owUbIY+ifGYO3/lxGsuC+uymsXo8HHUdA+DbiU0CCB4g80YEzqm5N1WDYAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:32:32.064108Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.06807","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4e4234d62e6529fa83aa3fc87a5ecaddfb7e3064128a8d06e187a7fe151458cb","sha256:24c7cf8d55ca2cd1850c4b76a51aff1770ad3535ec91922be51d2d34e9ee78e1"],"state_sha256":"14ced57534bc29218603261eb10b722d6e9485f6b43b162070be2ed03f0f5bce"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dNpe7cKDD0QWULF2SZ9AriC1/tE1+h34Fs8vyREQG1hhFu06ejXS1Q2MKiNifRYDAr2ia3alJc8d8L+BcXinCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T09:08:53.365900Z","bundle_sha256":"447b1915a860d05a2b39ca502415929c4a30aa1a2d9087b8b8c188319955d7c0"}}