{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:PRT3WGVAEPLRACRFLEKZGMX5EW","short_pith_number":"pith:PRT3WGVA","schema_version":"1.0","canonical_sha256":"7c67bb1aa023d7100a2559159332fd25933d1f061f3f8416d120f535b18df970","source":{"kind":"arxiv","id":"2009.07670","version":1},"attestation_state":"computed","paper":{"title":"A non-linear mathematical model for the X-ray variability classes of the microquasar GRS 1915+105 -- I: quiescent, spiking states and QPOs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Ardito, E. Massaro, F. Capitanio, M. Feroci, P. Ricciardi, T. Mineo","submitted_at":"2020-09-16T13:23:06Z","abstract_excerpt":"The microquasar GRS 1915+105 is known to exhibit a very variable X-ray emission on different time scales and patterns. We propose a system of two ordinary differential equations, adapted from the Hindmarsh-Rose model, with two dynamical variables x(t), y(t) and an input constant parameter J_0, to which we added a random white noise, whose solutions for the x(t) variable reproduce consistently the X-ray light curves of several variability classes as well as the development of low frequency Quasi-Periodic Oscillations (QPO). We show that changing only the value of J_0 the system moves from stabl"},"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":"2009.07670","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2020-09-16T13:23:06Z","cross_cats_sorted":[],"title_canon_sha256":"b6f2f6da231fc8a1fab46dd8fcb68468670095a14d97455a0fafd1ef2efed273","abstract_canon_sha256":"187b18cdb0e49eb41ad4f3c5f4cf9a9c6488b97f76fbe024afb615d788830e9a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:35:54.926671Z","signature_b64":"mtnLbVTdcmOvKGJy8Cp2+WnidpXLzF9YFOW3jcPLRItG079GX88Lt/viDNnmWdntzuWxGe1hTmrA/9VIPfrsDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7c67bb1aa023d7100a2559159332fd25933d1f061f3f8416d120f535b18df970","last_reissued_at":"2026-07-05T01:35:54.926322Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:35:54.926322Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A non-linear mathematical model for the X-ray variability classes of the microquasar GRS 1915+105 -- I: quiescent, spiking states and QPOs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"A. Ardito, E. Massaro, F. Capitanio, M. Feroci, P. Ricciardi, T. Mineo","submitted_at":"2020-09-16T13:23:06Z","abstract_excerpt":"The microquasar GRS 1915+105 is known to exhibit a very variable X-ray emission on different time scales and patterns. We propose a system of two ordinary differential equations, adapted from the Hindmarsh-Rose model, with two dynamical variables x(t), y(t) and an input constant parameter J_0, to which we added a random white noise, whose solutions for the x(t) variable reproduce consistently the X-ray light curves of several variability classes as well as the development of low frequency Quasi-Periodic Oscillations (QPO). We show that changing only the value of J_0 the system moves from stabl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2009.07670","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2009.07670/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2009.07670","created_at":"2026-07-05T01:35:54.926383+00:00"},{"alias_kind":"arxiv_version","alias_value":"2009.07670v1","created_at":"2026-07-05T01:35:54.926383+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2009.07670","created_at":"2026-07-05T01:35:54.926383+00:00"},{"alias_kind":"pith_short_12","alias_value":"PRT3WGVAEPLR","created_at":"2026-07-05T01:35:54.926383+00:00"},{"alias_kind":"pith_short_16","alias_value":"PRT3WGVAEPLRACRF","created_at":"2026-07-05T01:35:54.926383+00:00"},{"alias_kind":"pith_short_8","alias_value":"PRT3WGVA","created_at":"2026-07-05T01:35:54.926383+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/PRT3WGVAEPLRACRFLEKZGMX5EW","json":"https://pith.science/pith/PRT3WGVAEPLRACRFLEKZGMX5EW.json","graph_json":"https://pith.science/api/pith-number/PRT3WGVAEPLRACRFLEKZGMX5EW/graph.json","events_json":"https://pith.science/api/pith-number/PRT3WGVAEPLRACRFLEKZGMX5EW/events.json","paper":"https://pith.science/paper/PRT3WGVA"},"agent_actions":{"view_html":"https://pith.science/pith/PRT3WGVAEPLRACRFLEKZGMX5EW","download_json":"https://pith.science/pith/PRT3WGVAEPLRACRFLEKZGMX5EW.json","view_paper":"https://pith.science/paper/PRT3WGVA","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2009.07670&json=true","fetch_graph":"https://pith.science/api/pith-number/PRT3WGVAEPLRACRFLEKZGMX5EW/graph.json","fetch_events":"https://pith.science/api/pith-number/PRT3WGVAEPLRACRFLEKZGMX5EW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PRT3WGVAEPLRACRFLEKZGMX5EW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PRT3WGVAEPLRACRFLEKZGMX5EW/action/storage_attestation","attest_author":"https://pith.science/pith/PRT3WGVAEPLRACRFLEKZGMX5EW/action/author_attestation","sign_citation":"https://pith.science/pith/PRT3WGVAEPLRACRFLEKZGMX5EW/action/citation_signature","submit_replication":"https://pith.science/pith/PRT3WGVAEPLRACRFLEKZGMX5EW/action/replication_record"}},"created_at":"2026-07-05T01:35:54.926383+00:00","updated_at":"2026-07-05T01:35:54.926383+00:00"}