{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:2WOX2JD4PM4DSQNOMF6JCIFBGX","short_pith_number":"pith:2WOX2JD4","canonical_record":{"source":{"id":"1601.00686","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-04T22:22:08Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"036eff0db10ba825b4dac7ecd7509d831c20194a4f49cdb900bdc870176e12eb","abstract_canon_sha256":"3342fe6ca95b474b943a264b9023fb23b5d5051f3916d5dee60fa28774bc9d79"},"schema_version":"1.0"},"canonical_sha256":"d59d7d247c7b383941ae617c9120a135f0c41c8b701be5dd0e9ff58bf67884f7","source":{"kind":"arxiv","id":"1601.00686","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.00686","created_at":"2026-05-18T01:12:49Z"},{"alias_kind":"arxiv_version","alias_value":"1601.00686v2","created_at":"2026-05-18T01:12:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.00686","created_at":"2026-05-18T01:12:49Z"},{"alias_kind":"pith_short_12","alias_value":"2WOX2JD4PM4D","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2WOX2JD4PM4DSQNO","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2WOX2JD4","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:2WOX2JD4PM4DSQNOMF6JCIFBGX","target":"record","payload":{"canonical_record":{"source":{"id":"1601.00686","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2016-01-04T22:22:08Z","cross_cats_sorted":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"title_canon_sha256":"036eff0db10ba825b4dac7ecd7509d831c20194a4f49cdb900bdc870176e12eb","abstract_canon_sha256":"3342fe6ca95b474b943a264b9023fb23b5d5051f3916d5dee60fa28774bc9d79"},"schema_version":"1.0"},"canonical_sha256":"d59d7d247c7b383941ae617c9120a135f0c41c8b701be5dd0e9ff58bf67884f7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:49.241909Z","signature_b64":"gE9E2et9KfBuXKPUlsNIENIJ61VxrtG5PR0KcMOmR/0M/4FdS507QnM8zC3VvK57vgmjoVVp8qY8UVt6cZlYAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d59d7d247c7b383941ae617c9120a135f0c41c8b701be5dd0e9ff58bf67884f7","last_reissued_at":"2026-05-18T01:12:49.241578Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:49.241578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1601.00686","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":"2026-05-18T01:12:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qlA6MQoXO4qEWLLc7f0faz3dBKtMdmLNPhpfb2QUHJRCYjOuTvUpwmsiyROjrHczassA2Bp3CQa0wWa/Yp2/DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:08:56.437189Z"},"content_sha256":"51207de19afeaff9d71ea698ff38634baffd5731c01fbc490008876831c1445c","schema_version":"1.0","event_id":"sha256:51207de19afeaff9d71ea698ff38634baffd5731c01fbc490008876831c1445c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:2WOX2JD4PM4DSQNOMF6JCIFBGX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An Intermediate Type Ia Supernova Between Normal And Super-Chandrasekhar","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","astro-ph.GA","astro-ph.HE"],"primary_cat":"astro-ph.SR","authors_text":"A. Goobar, Brian D. Bue, C. Fremling, D. A. Perley, E. Y. Hsiao, Frank J. Masci, Jakob Nordin, J. Johansson, Mansi M. Kasliwal, Nicolas Chotard, Ori Fox, Peter E. Nugent, R. Amanullah, S. Bradley Cenko, S. R. Kulkarni, William H. Lee, Yi Cao","submitted_at":"2016-01-04T22:22:08Z","abstract_excerpt":"In this paper, we report observations of a peculiar Type Ia supernova iPTF13asv (a.k.a., SN2013cv) from the onset of the explosion to months after its peak. The early-phase spectra of iPTF13asv show absence of iron absorption, indicating that synthesized iron elements are confined to low-velocity regions of the ejecta, which, in turn, implies a stratified ejecta structure along the line of sight. Our analysis of iPTF13asv's light curves and spectra shows that it is an intermediate case between normal and super-Chandrasekhar events. On the one hand, its light curve shape (B-band $\\Delta m_{15}="},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.00686","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":"2026-05-18T01:12:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SyysEfSgLFVI0gfrktoAjYe+sxDrQTLasfhKEc6HpKnFtySt0Xw4/xWuuJE0GaskU01hSNa9rWmvoRE6zL6qAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T08:08:56.437574Z"},"content_sha256":"be4e7c26647c2ac6482f99491a77b5a3cce9b80789e5e8437285a205c02a840e","schema_version":"1.0","event_id":"sha256:be4e7c26647c2ac6482f99491a77b5a3cce9b80789e5e8437285a205c02a840e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2WOX2JD4PM4DSQNOMF6JCIFBGX/bundle.json","state_url":"https://pith.science/pith/2WOX2JD4PM4DSQNOMF6JCIFBGX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2WOX2JD4PM4DSQNOMF6JCIFBGX/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":"2026-05-28T08:08:56Z","links":{"resolver":"https://pith.science/pith/2WOX2JD4PM4DSQNOMF6JCIFBGX","bundle":"https://pith.science/pith/2WOX2JD4PM4DSQNOMF6JCIFBGX/bundle.json","state":"https://pith.science/pith/2WOX2JD4PM4DSQNOMF6JCIFBGX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2WOX2JD4PM4DSQNOMF6JCIFBGX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:2WOX2JD4PM4DSQNOMF6JCIFBGX","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":"3342fe6ca95b474b943a264b9023fb23b5d5051f3916d5dee60fa28774bc9d79","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":"2016-01-04T22:22:08Z","title_canon_sha256":"036eff0db10ba825b4dac7ecd7509d831c20194a4f49cdb900bdc870176e12eb"},"schema_version":"1.0","source":{"id":"1601.00686","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1601.00686","created_at":"2026-05-18T01:12:49Z"},{"alias_kind":"arxiv_version","alias_value":"1601.00686v2","created_at":"2026-05-18T01:12:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1601.00686","created_at":"2026-05-18T01:12:49Z"},{"alias_kind":"pith_short_12","alias_value":"2WOX2JD4PM4D","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2WOX2JD4PM4DSQNO","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2WOX2JD4","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:be4e7c26647c2ac6482f99491a77b5a3cce9b80789e5e8437285a205c02a840e","target":"graph","created_at":"2026-05-18T01:12:49Z","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":"In this paper, we report observations of a peculiar Type Ia supernova iPTF13asv (a.k.a., SN2013cv) from the onset of the explosion to months after its peak. The early-phase spectra of iPTF13asv show absence of iron absorption, indicating that synthesized iron elements are confined to low-velocity regions of the ejecta, which, in turn, implies a stratified ejecta structure along the line of sight. Our analysis of iPTF13asv's light curves and spectra shows that it is an intermediate case between normal and super-Chandrasekhar events. On the one hand, its light curve shape (B-band $\\Delta m_{15}=","authors_text":"A. Goobar, Brian D. Bue, C. Fremling, D. A. Perley, E. Y. Hsiao, Frank J. Masci, Jakob Nordin, J. Johansson, Mansi M. Kasliwal, Nicolas Chotard, Ori Fox, Peter E. Nugent, R. Amanullah, S. Bradley Cenko, S. R. Kulkarni, William H. Lee, Yi 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":"2016-01-04T22:22:08Z","title":"An Intermediate Type Ia Supernova Between Normal And Super-Chandrasekhar"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1601.00686","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":"sha256:51207de19afeaff9d71ea698ff38634baffd5731c01fbc490008876831c1445c","target":"record","created_at":"2026-05-18T01:12:49Z","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":"3342fe6ca95b474b943a264b9023fb23b5d5051f3916d5dee60fa28774bc9d79","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":"2016-01-04T22:22:08Z","title_canon_sha256":"036eff0db10ba825b4dac7ecd7509d831c20194a4f49cdb900bdc870176e12eb"},"schema_version":"1.0","source":{"id":"1601.00686","kind":"arxiv","version":2}},"canonical_sha256":"d59d7d247c7b383941ae617c9120a135f0c41c8b701be5dd0e9ff58bf67884f7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d59d7d247c7b383941ae617c9120a135f0c41c8b701be5dd0e9ff58bf67884f7","first_computed_at":"2026-05-18T01:12:49.241578Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:49.241578Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gE9E2et9KfBuXKPUlsNIENIJ61VxrtG5PR0KcMOmR/0M/4FdS507QnM8zC3VvK57vgmjoVVp8qY8UVt6cZlYAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:49.241909Z","signed_message":"canonical_sha256_bytes"},"source_id":"1601.00686","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:51207de19afeaff9d71ea698ff38634baffd5731c01fbc490008876831c1445c","sha256:be4e7c26647c2ac6482f99491a77b5a3cce9b80789e5e8437285a205c02a840e"],"state_sha256":"e59c3a0cb0598f4b01166a33faaecc3a178c8d88aac451dc51df79b4c01953ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0WQ0uAkNG7jH0jjiIeJrmtLZhHrLUo2gRNovZE/sBOBkXFrnoykql5mmCugWncNuhGnNLpSN0irBek4hajSdBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T08:08:56.439720Z","bundle_sha256":"29bbf1e010dd3e5108bfa7f6d49f8139da24d7c8e7ec6cf4a87f7dd5dcef4d5a"}}