{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:F2G2HI2RTM6YCJFGIEMVE2OWY4","short_pith_number":"pith:F2G2HI2R","schema_version":"1.0","canonical_sha256":"2e8da3a3519b3d8124a641195269d6c7237b5624810f364e8bdbd8717a810c69","source":{"kind":"arxiv","id":"1910.07405","version":1},"attestation_state":"computed","paper":{"title":"Chandra Observations of the Spectacular A3411-12 Merger Event","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Andra Stroe, Christine Jones, David Sobral, David Wittman, Dharam Vir Lal, Dongsu Ryu, Felipe Andrade-Santos, Gabriella Di Gennaro, Hyesung Kang, Kevin Fogarty, Marcus Br\\\"uggen, M. James Jee, Nathan Golovich, Rafael Santucci, Ralph P. Kraft, Reinout J. van Weeren, Stephen S. Murray, Vinicius M. Placco, William Dawson, William R. Forman","submitted_at":"2019-10-16T15:18:31Z","abstract_excerpt":"We present deep Chandra observations of A3411-12, a remarkable merging cluster that hosts the most compelling evidence for electron re-acceleration at cluster shocks to date. Using the $Y_X-M$ scaling relation, we find $r_{500} \\sim 1.3$ Mpc, $M_{500} = (7.1 \\pm 0.7) \\times 10^{14} \\ M_{\\rm{\\odot}}$, $kT=6.5\\pm 0.1$ keV, and a gas mass of $M_{\\rm g,500} = (9.7 \\pm 0.1) \\times 10^{13} M_\\odot$. The gas mass fraction within $r_{500}$ is $f_{\\rm g} = 0.14 \\pm 0.01$. We compute the shock strength using density jumps to conclude that the Mach number of the merging subcluster is small ($M \\leq 1.15_"},"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":"1910.07405","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2019-10-16T15:18:31Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"248461a15bf0dedee1349a543a2ee8ae1c8fb625e8767db4d584375bf4def7e3","abstract_canon_sha256":"4c4d358f25bca6bb2e5769a6240597e384a1167a0d5a3ceafe533b2d03e731c6"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:30:28.984098Z","signature_b64":"W6Y43lo8goqE8h5frDg1h7kLEVhKuQoARfG4lN3/NMaOSTgHRmC/bHr0cxGZTicmxhUqdkj4juw7sGgh0xw9CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2e8da3a3519b3d8124a641195269d6c7237b5624810f364e8bdbd8717a810c69","last_reissued_at":"2026-07-05T00:30:28.983715Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:30:28.983715Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Chandra Observations of the Spectacular A3411-12 Merger Event","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.HE","authors_text":"Andra Stroe, Christine Jones, David Sobral, David Wittman, Dharam Vir Lal, Dongsu Ryu, Felipe Andrade-Santos, Gabriella Di Gennaro, Hyesung Kang, Kevin Fogarty, Marcus Br\\\"uggen, M. James Jee, Nathan Golovich, Rafael Santucci, Ralph P. Kraft, Reinout J. van Weeren, Stephen S. Murray, Vinicius M. Placco, William Dawson, William R. Forman","submitted_at":"2019-10-16T15:18:31Z","abstract_excerpt":"We present deep Chandra observations of A3411-12, a remarkable merging cluster that hosts the most compelling evidence for electron re-acceleration at cluster shocks to date. Using the $Y_X-M$ scaling relation, we find $r_{500} \\sim 1.3$ Mpc, $M_{500} = (7.1 \\pm 0.7) \\times 10^{14} \\ M_{\\rm{\\odot}}$, $kT=6.5\\pm 0.1$ keV, and a gas mass of $M_{\\rm g,500} = (9.7 \\pm 0.1) \\times 10^{13} M_\\odot$. The gas mass fraction within $r_{500}$ is $f_{\\rm g} = 0.14 \\pm 0.01$. We compute the shock strength using density jumps to conclude that the Mach number of the merging subcluster is small ($M \\leq 1.15_"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1910.07405","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/1910.07405/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":"1910.07405","created_at":"2026-07-05T00:30:28.983774+00:00"},{"alias_kind":"arxiv_version","alias_value":"1910.07405v1","created_at":"2026-07-05T00:30:28.983774+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1910.07405","created_at":"2026-07-05T00:30:28.983774+00:00"},{"alias_kind":"pith_short_12","alias_value":"F2G2HI2RTM6Y","created_at":"2026-07-05T00:30:28.983774+00:00"},{"alias_kind":"pith_short_16","alias_value":"F2G2HI2RTM6YCJFG","created_at":"2026-07-05T00:30:28.983774+00:00"},{"alias_kind":"pith_short_8","alias_value":"F2G2HI2R","created_at":"2026-07-05T00:30:28.983774+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/F2G2HI2RTM6YCJFGIEMVE2OWY4","json":"https://pith.science/pith/F2G2HI2RTM6YCJFGIEMVE2OWY4.json","graph_json":"https://pith.science/api/pith-number/F2G2HI2RTM6YCJFGIEMVE2OWY4/graph.json","events_json":"https://pith.science/api/pith-number/F2G2HI2RTM6YCJFGIEMVE2OWY4/events.json","paper":"https://pith.science/paper/F2G2HI2R"},"agent_actions":{"view_html":"https://pith.science/pith/F2G2HI2RTM6YCJFGIEMVE2OWY4","download_json":"https://pith.science/pith/F2G2HI2RTM6YCJFGIEMVE2OWY4.json","view_paper":"https://pith.science/paper/F2G2HI2R","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1910.07405&json=true","fetch_graph":"https://pith.science/api/pith-number/F2G2HI2RTM6YCJFGIEMVE2OWY4/graph.json","fetch_events":"https://pith.science/api/pith-number/F2G2HI2RTM6YCJFGIEMVE2OWY4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/F2G2HI2RTM6YCJFGIEMVE2OWY4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/F2G2HI2RTM6YCJFGIEMVE2OWY4/action/storage_attestation","attest_author":"https://pith.science/pith/F2G2HI2RTM6YCJFGIEMVE2OWY4/action/author_attestation","sign_citation":"https://pith.science/pith/F2G2HI2RTM6YCJFGIEMVE2OWY4/action/citation_signature","submit_replication":"https://pith.science/pith/F2G2HI2RTM6YCJFGIEMVE2OWY4/action/replication_record"}},"created_at":"2026-07-05T00:30:28.983774+00:00","updated_at":"2026-07-05T00:30:28.983774+00:00"}