{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:HWTCP2QMGKSSS2GPZW6WGPY2LM","short_pith_number":"pith:HWTCP2QM","schema_version":"1.0","canonical_sha256":"3da627ea0c32a52968cfcdbd633f1a5b20d9a5742c41e303bf3f0bec5989bda5","source":{"kind":"arxiv","id":"1203.1323","version":2},"attestation_state":"computed","paper":{"title":"Cosmological X-ray Scattering from Intergalactic Dust","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Frits Paerels, Lia Corrales","submitted_at":"2012-03-06T21:00:18Z","abstract_excerpt":"High resolution X-ray imaging offers a unique opportunity to probe the nature of dust in the z ~< 2 universe. Dust grains 0.1- 1 um in size will scatter soft X-rays, producing a diffuse \"halo\" image around an X-ray point source, with a brightness ~ few % confined to an arcminute-sized region. We derive the formulae for scattering in a cosmological context and calculate the surface brightness of the scattering halo due to (i) an IGM uniformly enriched (Omega_ d ~ 10^-5) by a power-law distribution of grain sizes, and (ii) a DLA-type (N_H ~ 10^21 cm^-2) dust screen at cosmological distances. The"},"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":"1203.1323","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2012-03-06T21:00:18Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"3df9b3028ec7b3cf012370e3b5e2980c1f4d794ba03f3e24fd5c494360eb196a","abstract_canon_sha256":"33a71a004c77e911d7fadb42d5638eda7e8b53a93053575693d71c85c111a460"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:58:14.081192Z","signature_b64":"XPDm94dS/FnR86GfQ6prwcNLp0vMH1U+3IDsCvq80FlfKO6RV6vZkEYUjF6p4vwXOhkckYN6CfAZWBG9Fh/XDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"3da627ea0c32a52968cfcdbd633f1a5b20d9a5742c41e303bf3f0bec5989bda5","last_reissued_at":"2026-05-18T01:58:14.080729Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:58:14.080729Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cosmological X-ray Scattering from Intergalactic Dust","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Frits Paerels, Lia Corrales","submitted_at":"2012-03-06T21:00:18Z","abstract_excerpt":"High resolution X-ray imaging offers a unique opportunity to probe the nature of dust in the z ~< 2 universe. Dust grains 0.1- 1 um in size will scatter soft X-rays, producing a diffuse \"halo\" image around an X-ray point source, with a brightness ~ few % confined to an arcminute-sized region. We derive the formulae for scattering in a cosmological context and calculate the surface brightness of the scattering halo due to (i) an IGM uniformly enriched (Omega_ d ~ 10^-5) by a power-law distribution of grain sizes, and (ii) a DLA-type (N_H ~ 10^21 cm^-2) dust screen at cosmological distances. The"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.1323","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1203.1323","created_at":"2026-05-18T01:58:14.080802+00:00"},{"alias_kind":"arxiv_version","alias_value":"1203.1323v2","created_at":"2026-05-18T01:58:14.080802+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.1323","created_at":"2026-05-18T01:58:14.080802+00:00"},{"alias_kind":"pith_short_12","alias_value":"HWTCP2QMGKSS","created_at":"2026-05-18T12:27:09.501522+00:00"},{"alias_kind":"pith_short_16","alias_value":"HWTCP2QMGKSSS2GP","created_at":"2026-05-18T12:27:09.501522+00:00"},{"alias_kind":"pith_short_8","alias_value":"HWTCP2QM","created_at":"2026-05-18T12:27:09.501522+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/HWTCP2QMGKSSS2GPZW6WGPY2LM","json":"https://pith.science/pith/HWTCP2QMGKSSS2GPZW6WGPY2LM.json","graph_json":"https://pith.science/api/pith-number/HWTCP2QMGKSSS2GPZW6WGPY2LM/graph.json","events_json":"https://pith.science/api/pith-number/HWTCP2QMGKSSS2GPZW6WGPY2LM/events.json","paper":"https://pith.science/paper/HWTCP2QM"},"agent_actions":{"view_html":"https://pith.science/pith/HWTCP2QMGKSSS2GPZW6WGPY2LM","download_json":"https://pith.science/pith/HWTCP2QMGKSSS2GPZW6WGPY2LM.json","view_paper":"https://pith.science/paper/HWTCP2QM","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1203.1323&json=true","fetch_graph":"https://pith.science/api/pith-number/HWTCP2QMGKSSS2GPZW6WGPY2LM/graph.json","fetch_events":"https://pith.science/api/pith-number/HWTCP2QMGKSSS2GPZW6WGPY2LM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HWTCP2QMGKSSS2GPZW6WGPY2LM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HWTCP2QMGKSSS2GPZW6WGPY2LM/action/storage_attestation","attest_author":"https://pith.science/pith/HWTCP2QMGKSSS2GPZW6WGPY2LM/action/author_attestation","sign_citation":"https://pith.science/pith/HWTCP2QMGKSSS2GPZW6WGPY2LM/action/citation_signature","submit_replication":"https://pith.science/pith/HWTCP2QMGKSSS2GPZW6WGPY2LM/action/replication_record"}},"created_at":"2026-05-18T01:58:14.080802+00:00","updated_at":"2026-05-18T01:58:14.080802+00:00"}