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We selected a few IRIS spectral lines, which include the photospheric (Mn~{\\sc i} 2801.25~{\\AA}), chromospheric (Mg~{\\sc ii} k 2796.35~{\\AA}) and TR (C~{\\sc ii} 1334.53~{\\AA}), to investigate the acoustic wave propagation.The wavelet cross-spectrum reveals significant coherence (about 70\\% locations) between photosphere and chromosphere. Few minutes oscillations (i.e., period range from 1.6 to 4.0 minutes)"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1807.01449","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2018-07-04T05:09:13Z","cross_cats_sorted":[],"title_canon_sha256":"c046d0935f824e45f8e23879c5869046ed5d1a119213d7bd789107b614b63f87","abstract_canon_sha256":"4dbdbcca95f4910d9c69a2405577359409212ab02d71b51ab247c20ef41b8a68"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:08:40.481070Z","signature_b64":"0DVVhxQLOhNS8XhuTVMlOM81iwO4z1WzhLX15QBkFyrg3i4tVCvfHyv2aB4lAKIFC0HKLIN0UHmjl7OOxZSeBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"feeaea8fa2ac9fea0da318341a9d7af2575e25f09f0132c4cf28dfd4e3b0ec50","last_reissued_at":"2026-05-18T00:08:40.480466Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:08:40.480466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Vertical Propagation of Acoustic Waves in the Solar Inter-Network as Observed by IRIS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.SR","authors_text":"A.K. 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