{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:OJZ5X7F3CP7E3IQ3CCB3YTSV2H","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":"c5c1dfdca6b28b6298fe5bf4a695edac9fcf56b4c05a6d08bd245ba23c39e120","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-28T17:28:23Z","title_canon_sha256":"0af393caeced9275db6c84e0b1faf917c44456913b4d0f1c2d266aa1fd872b59"},"schema_version":"1.0","source":{"id":"1703.09679","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.09679","created_at":"2026-05-18T00:34:41Z"},{"alias_kind":"arxiv_version","alias_value":"1703.09679v2","created_at":"2026-05-18T00:34:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.09679","created_at":"2026-05-18T00:34:41Z"},{"alias_kind":"pith_short_12","alias_value":"OJZ5X7F3CP7E","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_16","alias_value":"OJZ5X7F3CP7E3IQ3","created_at":"2026-05-18T12:31:34Z"},{"alias_kind":"pith_short_8","alias_value":"OJZ5X7F3","created_at":"2026-05-18T12:31:34Z"}],"graph_snapshots":[{"event_id":"sha256:36bbfcb14879bcb41de4ec43f57a09cb802d59d9549a15f817ca547434cada46","target":"graph","created_at":"2026-05-18T00:34:41Z","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":"A Type IIn supernova (SN) is dominated by the interaction of SN ejecta with the circumstellar medium (CSM). Some SNe IIn (e.g., SN 2006jd) have episodes of re-brightening (\"bumps\") in their light curves. We present iPTF13z, a SN IIn discovered by the intermediate Palomar Transient Factory (iPTF) and characterised by several bumps in its light curve. We analyse this peculiar behaviour trying to infer the properties of the CSM and of the SN explosion, as well as the nature of its progenitor star. We obtained multi-band optical photometry for over 1000 days after discovery with the P48 and P60 te","authors_text":"A. De Cia, A. Gal-Yam, A. Nyholm, C. Fremling, E. O. Ofek, F. J. Masci, F. Taddia, J. Sollerman, M. M. Kasliwal, P. E. Nugent, R. Roy, T. J. Moriya, Y. Cao","cross_cats":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-28T17:28:23Z","title":"The bumpy light curve of supernova iPTF13z"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.09679","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":"sha256:9d212b541a8f17c6179b174a4471911d8d15e9f60e683713733ebc35dda025e0","target":"record","created_at":"2026-05-18T00:34:41Z","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":"c5c1dfdca6b28b6298fe5bf4a695edac9fcf56b4c05a6d08bd245ba23c39e120","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-03-28T17:28:23Z","title_canon_sha256":"0af393caeced9275db6c84e0b1faf917c44456913b4d0f1c2d266aa1fd872b59"},"schema_version":"1.0","source":{"id":"1703.09679","kind":"arxiv","version":2}},"canonical_sha256":"7273dbfcbb13fe4da21b1083bc4e55d1cf2fd76dc9e612d6724d423c50b991b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7273dbfcbb13fe4da21b1083bc4e55d1cf2fd76dc9e612d6724d423c50b991b7","first_computed_at":"2026-05-18T00:34:41.702436Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:34:41.702436Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FvzAGQSFnoFeu0lvVjyyRkQuKQ9Qnt/phDPYhdyDbnTx4lN0jZMBCP0eRp7JR+crUId7JZEoe+xM9KHPWDgPCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:34:41.703115Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.09679","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d212b541a8f17c6179b174a4471911d8d15e9f60e683713733ebc35dda025e0","sha256:36bbfcb14879bcb41de4ec43f57a09cb802d59d9549a15f817ca547434cada46"],"state_sha256":"ec7e595ea2a47b61c3216510d8e089397d1d4be1503a725ef9d205bb6e756019"}