{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:3ZQHU2YBHDQD72DLKYSDSS64LD","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":"b568d6966bce846746b50b85e1e2d49b19bf0856341259532a873cfafd4cb6fa","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-09T10:07:19Z","title_canon_sha256":"9a8eb0126e7e4b68edebb1c52fdfc4760bf4fd2fd159e5d149a702987568bf7f"},"schema_version":"1.0","source":{"id":"1506.02845","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.02845","created_at":"2026-05-18T01:37:07Z"},{"alias_kind":"arxiv_version","alias_value":"1506.02845v1","created_at":"2026-05-18T01:37:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.02845","created_at":"2026-05-18T01:37:07Z"},{"alias_kind":"pith_short_12","alias_value":"3ZQHU2YBHDQD","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3ZQHU2YBHDQD72DL","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3ZQHU2YB","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:16c01dfc7239da9d0c9a4357d5b8231c5e809416ddfbea435cea3beac2831587","target":"graph","created_at":"2026-05-18T01:37:07Z","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 optical observations of a SN 2002cx-like supernova SN 2013en in UGC 11369, spanning from a phase near maximum light (t= +1 d) to t= +60 d with respect to the R-band maximum. Adopting a distance modulus of mu=34.11 +/- 0.15 mag and a total extinction (host galaxy+Milky Way) of $A_V \\sim1.5$ mag, we found that SN 2013en peaked at $M(R)\\sim -18.6$ mag, which is underluminous compared to the normal SNe Ia. The near maximum spectra show lines of Si II, Fe II, Fe III, Cr II, Ca II and other intermediate-mass and iron group elements which all have lower expansion velocities (i.e., ~ 6000 k","authors_text":"Chuanjun Wang, Fabrizio Ciabattari, Jujia Zhang, Liang Chang, Lina Tomasella, Tianmeng Zhang, Xiaofeng Wang, Xulin Zhao, Yuxin Xin, Zheng-Wei Liu","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-09T10:07:19Z","title":"Optical observations of a SN 2002cx-like peculiar supernova SN 2013en in UGC 11369"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.02845","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:c79de60249113c6b624f2ccd498788e0d6317b92dfdaec1349610f33753a9301","target":"record","created_at":"2026-05-18T01:37:07Z","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":"b568d6966bce846746b50b85e1e2d49b19bf0856341259532a873cfafd4cb6fa","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2015-06-09T10:07:19Z","title_canon_sha256":"9a8eb0126e7e4b68edebb1c52fdfc4760bf4fd2fd159e5d149a702987568bf7f"},"schema_version":"1.0","source":{"id":"1506.02845","kind":"arxiv","version":1}},"canonical_sha256":"de607a6b0138e03fe86b5624394bdc58d76b6982da50843bd854074d1e9859ea","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de607a6b0138e03fe86b5624394bdc58d76b6982da50843bd854074d1e9859ea","first_computed_at":"2026-05-18T01:37:07.236096Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:07.236096Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+IWE60lp4Nw6YhUDtZq2ZCe9NGLKqevK6EM2C5aLCJlcNOv60Bp7lD1+xDEOVmb0sw/BmPHZ4WTgWa4QFf+QCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:07.236768Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.02845","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c79de60249113c6b624f2ccd498788e0d6317b92dfdaec1349610f33753a9301","sha256:16c01dfc7239da9d0c9a4357d5b8231c5e809416ddfbea435cea3beac2831587"],"state_sha256":"4ab4f3874c012a88432b56d3d79b8e00eeaeb6afa2923dad2914e683bb90d758"}