{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:4JBPF66HLJMZYPWHZS6FUOMEGW","short_pith_number":"pith:4JBPF66H","schema_version":"1.0","canonical_sha256":"e242f2fbc75a599c3ec7ccbc5a398435953ae93ad491da1c08bca7c7e60ff261","source":{"kind":"arxiv","id":"1809.08036","version":1},"attestation_state":"computed","paper":{"title":"Systematic investigation of X-ray spectral variability of TeV blazars during flares in the $RXTE$ era","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Junhui Fan, Shifu Zhu, Yijun Wang, Yongquan Xue","submitted_at":"2018-09-21T10:58:36Z","abstract_excerpt":"Utilizing all the 16-year $RXTE$ observations, we analyze the X-ray spectra of 32 TeV blazars, and perform a systematic investigation of X-ray spectral variability for the 5 brightest sources during their major flares that lasted several days. We obtain photon spectral index ($\\alpha$), flux and synchrotron radiation peak energy ($E_{\\rm{p}}$) from empirical spectral fitting, and electron spectral index ($p$) from theoretical synchrotron radiation modeling. We find that both $\\alpha$ and $p$ generally display a harder-when-brighter trend, confirming the results of many previous works. Furtherm"},"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":"1809.08036","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2018-09-21T10:58:36Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"42c898dcc8265cccd31d23ce19734be0065be43e3ae1d3d6a0531d6125046889","abstract_canon_sha256":"ffcba82205658b49b9c2724e6b6fc35711b2159693d993a0f4bcd12f772e9894"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:28.184055Z","signature_b64":"j7W+twQTBfNiC25P0/ZyhX93ldFgC1qz7Tuw/sEKjO48R+nOaY9+uO1r+pvNiq5hut+FN/cgRpIWctgLXoHEDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e242f2fbc75a599c3ec7ccbc5a398435953ae93ad491da1c08bca7c7e60ff261","last_reissued_at":"2026-05-18T00:01:28.183478Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:28.183478Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Systematic investigation of X-ray spectral variability of TeV blazars during flares in the $RXTE$ era","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Junhui Fan, Shifu Zhu, Yijun Wang, Yongquan Xue","submitted_at":"2018-09-21T10:58:36Z","abstract_excerpt":"Utilizing all the 16-year $RXTE$ observations, we analyze the X-ray spectra of 32 TeV blazars, and perform a systematic investigation of X-ray spectral variability for the 5 brightest sources during their major flares that lasted several days. We obtain photon spectral index ($\\alpha$), flux and synchrotron radiation peak energy ($E_{\\rm{p}}$) from empirical spectral fitting, and electron spectral index ($p$) from theoretical synchrotron radiation modeling. We find that both $\\alpha$ and $p$ generally display a harder-when-brighter trend, confirming the results of many previous works. Furtherm"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.08036","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":"1809.08036","created_at":"2026-05-18T00:01:28.183571+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.08036v1","created_at":"2026-05-18T00:01:28.183571+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.08036","created_at":"2026-05-18T00:01:28.183571+00:00"},{"alias_kind":"pith_short_12","alias_value":"4JBPF66HLJMZ","created_at":"2026-05-18T12:32:05.422762+00:00"},{"alias_kind":"pith_short_16","alias_value":"4JBPF66HLJMZYPWH","created_at":"2026-05-18T12:32:05.422762+00:00"},{"alias_kind":"pith_short_8","alias_value":"4JBPF66H","created_at":"2026-05-18T12:32:05.422762+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/4JBPF66HLJMZYPWHZS6FUOMEGW","json":"https://pith.science/pith/4JBPF66HLJMZYPWHZS6FUOMEGW.json","graph_json":"https://pith.science/api/pith-number/4JBPF66HLJMZYPWHZS6FUOMEGW/graph.json","events_json":"https://pith.science/api/pith-number/4JBPF66HLJMZYPWHZS6FUOMEGW/events.json","paper":"https://pith.science/paper/4JBPF66H"},"agent_actions":{"view_html":"https://pith.science/pith/4JBPF66HLJMZYPWHZS6FUOMEGW","download_json":"https://pith.science/pith/4JBPF66HLJMZYPWHZS6FUOMEGW.json","view_paper":"https://pith.science/paper/4JBPF66H","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.08036&json=true","fetch_graph":"https://pith.science/api/pith-number/4JBPF66HLJMZYPWHZS6FUOMEGW/graph.json","fetch_events":"https://pith.science/api/pith-number/4JBPF66HLJMZYPWHZS6FUOMEGW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4JBPF66HLJMZYPWHZS6FUOMEGW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4JBPF66HLJMZYPWHZS6FUOMEGW/action/storage_attestation","attest_author":"https://pith.science/pith/4JBPF66HLJMZYPWHZS6FUOMEGW/action/author_attestation","sign_citation":"https://pith.science/pith/4JBPF66HLJMZYPWHZS6FUOMEGW/action/citation_signature","submit_replication":"https://pith.science/pith/4JBPF66HLJMZYPWHZS6FUOMEGW/action/replication_record"}},"created_at":"2026-05-18T00:01:28.183571+00:00","updated_at":"2026-05-18T00:01:28.183571+00:00"}