{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:ITIJXZTYNA3V5IDQH6PLFSQXC3","short_pith_number":"pith:ITIJXZTY","schema_version":"1.0","canonical_sha256":"44d09be67868375ea0703f9eb2ca1716c104df45e0e84d11ce0b09fcd3e81e82","source":{"kind":"arxiv","id":"1602.02559","version":1},"attestation_state":"computed","paper":{"title":"Spectral analysis of SMC X-2 during its 2015 outburst","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"2, 2 - IUSS Pavia (I), 3) (1 - INAF/IASF Milano (I), 3 - INFN Pavia (I)), A. Tiengo (1, F. Pintore (1), L. Sidoli (1), N. La Palombara (1), P. Esposito (1), S. Mereghetti (1)","submitted_at":"2016-02-08T13:29:14Z","abstract_excerpt":"We report on the results of Swift and XMM-Newton observations of SMC X-2 during its last outburst in 2015 October, the first one since 2000. The source reached a very high luminosity ($L \\sim 10^{38}$ erg s$^{-1}$), which allowed us to perform a detailed analysis of its timing and spectral properties. We obtained a pulse period $P_{\\rm spin}$ = 2.372267(5) s and a characterization of the pulse profile also at low energies. The main spectral component is a hard ($\\Gamma \\simeq 0$) power-law model with an exponential cut-off, but at low energies we detected also a soft (with kT $\\simeq$ 0.15 keV"},"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":"1602.02559","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-02-08T13:29:14Z","cross_cats_sorted":[],"title_canon_sha256":"e168a585031ce485ce387b5bb42d7f38122b5d91bb190d7fa588c8a129a1f682","abstract_canon_sha256":"b8135fd0578ae839f4ae80b52e6ebf3058e6fe6b44085fe7c89f0ffc335fe509"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:18:37.549461Z","signature_b64":"XjkT+nVVd8g0/gatuqEb47YFoTjpzcTdmu4EBBx5RcFZKp+Bq2j6TfL8TAxk2ZcjmzsIPutXL/XN2UhWThilCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"44d09be67868375ea0703f9eb2ca1716c104df45e0e84d11ce0b09fcd3e81e82","last_reissued_at":"2026-05-18T01:18:37.548840Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:18:37.548840Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Spectral analysis of SMC X-2 during its 2015 outburst","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"2, 2 - IUSS Pavia (I), 3) (1 - INAF/IASF Milano (I), 3 - INFN Pavia (I)), A. Tiengo (1, F. Pintore (1), L. Sidoli (1), N. La Palombara (1), P. Esposito (1), S. Mereghetti (1)","submitted_at":"2016-02-08T13:29:14Z","abstract_excerpt":"We report on the results of Swift and XMM-Newton observations of SMC X-2 during its last outburst in 2015 October, the first one since 2000. The source reached a very high luminosity ($L \\sim 10^{38}$ erg s$^{-1}$), which allowed us to perform a detailed analysis of its timing and spectral properties. We obtained a pulse period $P_{\\rm spin}$ = 2.372267(5) s and a characterization of the pulse profile also at low energies. The main spectral component is a hard ($\\Gamma \\simeq 0$) power-law model with an exponential cut-off, but at low energies we detected also a soft (with kT $\\simeq$ 0.15 keV"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.02559","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1602.02559","created_at":"2026-05-18T01:18:37.548932+00:00"},{"alias_kind":"arxiv_version","alias_value":"1602.02559v1","created_at":"2026-05-18T01:18:37.548932+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1602.02559","created_at":"2026-05-18T01:18:37.548932+00:00"},{"alias_kind":"pith_short_12","alias_value":"ITIJXZTYNA3V","created_at":"2026-05-18T12:30:22.444734+00:00"},{"alias_kind":"pith_short_16","alias_value":"ITIJXZTYNA3V5IDQ","created_at":"2026-05-18T12:30:22.444734+00:00"},{"alias_kind":"pith_short_8","alias_value":"ITIJXZTY","created_at":"2026-05-18T12:30:22.444734+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ITIJXZTYNA3V5IDQH6PLFSQXC3","json":"https://pith.science/pith/ITIJXZTYNA3V5IDQH6PLFSQXC3.json","graph_json":"https://pith.science/api/pith-number/ITIJXZTYNA3V5IDQH6PLFSQXC3/graph.json","events_json":"https://pith.science/api/pith-number/ITIJXZTYNA3V5IDQH6PLFSQXC3/events.json","paper":"https://pith.science/paper/ITIJXZTY"},"agent_actions":{"view_html":"https://pith.science/pith/ITIJXZTYNA3V5IDQH6PLFSQXC3","download_json":"https://pith.science/pith/ITIJXZTYNA3V5IDQH6PLFSQXC3.json","view_paper":"https://pith.science/paper/ITIJXZTY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1602.02559&json=true","fetch_graph":"https://pith.science/api/pith-number/ITIJXZTYNA3V5IDQH6PLFSQXC3/graph.json","fetch_events":"https://pith.science/api/pith-number/ITIJXZTYNA3V5IDQH6PLFSQXC3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ITIJXZTYNA3V5IDQH6PLFSQXC3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ITIJXZTYNA3V5IDQH6PLFSQXC3/action/storage_attestation","attest_author":"https://pith.science/pith/ITIJXZTYNA3V5IDQH6PLFSQXC3/action/author_attestation","sign_citation":"https://pith.science/pith/ITIJXZTYNA3V5IDQH6PLFSQXC3/action/citation_signature","submit_replication":"https://pith.science/pith/ITIJXZTYNA3V5IDQH6PLFSQXC3/action/replication_record"}},"created_at":"2026-05-18T01:18:37.548932+00:00","updated_at":"2026-05-18T01:18:37.548932+00:00"}