{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:KUJ7G432AUVUN7Y6WLJSLRUDOY","short_pith_number":"pith:KUJ7G432","canonical_record":{"source":{"id":"1902.10183","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-02-26T19:51:27Z","cross_cats_sorted":[],"title_canon_sha256":"96871ec805ae9a1b0315e1dff88ba8d37af18a7d27e7b15270a7f4ae282503f0","abstract_canon_sha256":"f66c8aa0221b516f0005c502245236df9a54a0c1c12141fd82b572a9a0d3e3c4"},"schema_version":"1.0"},"canonical_sha256":"5513f3737a052b46ff1eb2d325c68376295b3cd0d043069287e6c1812835cdda","source":{"kind":"arxiv","id":"1902.10183","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.10183","created_at":"2026-05-17T23:48:30Z"},{"alias_kind":"arxiv_version","alias_value":"1902.10183v1","created_at":"2026-05-17T23:48:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.10183","created_at":"2026-05-17T23:48:30Z"},{"alias_kind":"pith_short_12","alias_value":"KUJ7G432AUVU","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"KUJ7G432AUVUN7Y6","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"KUJ7G432","created_at":"2026-05-18T12:33:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:KUJ7G432AUVUN7Y6WLJSLRUDOY","target":"record","payload":{"canonical_record":{"source":{"id":"1902.10183","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-02-26T19:51:27Z","cross_cats_sorted":[],"title_canon_sha256":"96871ec805ae9a1b0315e1dff88ba8d37af18a7d27e7b15270a7f4ae282503f0","abstract_canon_sha256":"f66c8aa0221b516f0005c502245236df9a54a0c1c12141fd82b572a9a0d3e3c4"},"schema_version":"1.0"},"canonical_sha256":"5513f3737a052b46ff1eb2d325c68376295b3cd0d043069287e6c1812835cdda","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:30.245495Z","signature_b64":"/2B0aKCBCO2ccJ45VJACY5vf+SUviDq+IjL6f4o8l7rpeLhXqkMcxNKujmpsj2fGqJUZlNSCLMqXCysvBZC6Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5513f3737a052b46ff1eb2d325c68376295b3cd0d043069287e6c1812835cdda","last_reissued_at":"2026-05-17T23:48:30.244976Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:30.244976Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1902.10183","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:48:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"iNY1KhEO0A1OFVk7seAxZTmLH1vf1i2GZq7HLlE2vKnZUXrQQvQ4we/uzmrj7zlRwamLF4XMCqTTi3y3eds9BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T02:16:38.003119Z"},"content_sha256":"9719b28d49f9f8efc3e504b65c508503b6fc5d38ffd356e198ef44aa8cf85d29","schema_version":"1.0","event_id":"sha256:9719b28d49f9f8efc3e504b65c508503b6fc5d38ffd356e198ef44aa8cf85d29"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:KUJ7G432AUVUN7Y6WLJSLRUDOY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The effect of dust composition and shape on radiation-pressure forces and blowout sizes of particles in debris disks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Alycia J. Weinberger, Evgenij S. Zubko, Gorden Videen, Jessica A. Arnold","submitted_at":"2019-02-26T19:51:27Z","abstract_excerpt":"The light scattered from dust grains in debris disks is typically modeled as compact spheres using Lorenz-Mie theory or as porous spheres by incorporating an effective medium theory. In this work we examine the effect of incorporating a more realistic particle morphology on estimated radiation-pressure blowout sizes. To calculate the scattering and absorption cross sections of irregularly shaped dust grains, we use the discrete dipole approximation. These cross sections are necessary to calculate the $\\beta$-ratio, which determines whether dust grains can remain gravitationally bound to their "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.10183","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:48:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cfLrUV+iDF7d495jwTTJwiu17pazLMbeBVpbFMYy1UjypdjrVIu15RMyDKS9Lu9VjgWrgbrBqGVmLuwAPa5pAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T02:16:38.003472Z"},"content_sha256":"127adcbd19a7c2690e2b875d1f0a90245b9d79dc148d7184bc6d101481a511cf","schema_version":"1.0","event_id":"sha256:127adcbd19a7c2690e2b875d1f0a90245b9d79dc148d7184bc6d101481a511cf"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KUJ7G432AUVUN7Y6WLJSLRUDOY/bundle.json","state_url":"https://pith.science/pith/KUJ7G432AUVUN7Y6WLJSLRUDOY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KUJ7G432AUVUN7Y6WLJSLRUDOY/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-27T02:16:38Z","links":{"resolver":"https://pith.science/pith/KUJ7G432AUVUN7Y6WLJSLRUDOY","bundle":"https://pith.science/pith/KUJ7G432AUVUN7Y6WLJSLRUDOY/bundle.json","state":"https://pith.science/pith/KUJ7G432AUVUN7Y6WLJSLRUDOY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KUJ7G432AUVUN7Y6WLJSLRUDOY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:KUJ7G432AUVUN7Y6WLJSLRUDOY","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"f66c8aa0221b516f0005c502245236df9a54a0c1c12141fd82b572a9a0d3e3c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-02-26T19:51:27Z","title_canon_sha256":"96871ec805ae9a1b0315e1dff88ba8d37af18a7d27e7b15270a7f4ae282503f0"},"schema_version":"1.0","source":{"id":"1902.10183","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.10183","created_at":"2026-05-17T23:48:30Z"},{"alias_kind":"arxiv_version","alias_value":"1902.10183v1","created_at":"2026-05-17T23:48:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.10183","created_at":"2026-05-17T23:48:30Z"},{"alias_kind":"pith_short_12","alias_value":"KUJ7G432AUVU","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_16","alias_value":"KUJ7G432AUVUN7Y6","created_at":"2026-05-18T12:33:21Z"},{"alias_kind":"pith_short_8","alias_value":"KUJ7G432","created_at":"2026-05-18T12:33:21Z"}],"graph_snapshots":[{"event_id":"sha256:127adcbd19a7c2690e2b875d1f0a90245b9d79dc148d7184bc6d101481a511cf","target":"graph","created_at":"2026-05-17T23:48:30Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The light scattered from dust grains in debris disks is typically modeled as compact spheres using Lorenz-Mie theory or as porous spheres by incorporating an effective medium theory. In this work we examine the effect of incorporating a more realistic particle morphology on estimated radiation-pressure blowout sizes. To calculate the scattering and absorption cross sections of irregularly shaped dust grains, we use the discrete dipole approximation. These cross sections are necessary to calculate the $\\beta$-ratio, which determines whether dust grains can remain gravitationally bound to their ","authors_text":"Alycia J. Weinberger, Evgenij S. Zubko, Gorden Videen, Jessica A. Arnold","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-02-26T19:51:27Z","title":"The effect of dust composition and shape on radiation-pressure forces and blowout sizes of particles in debris disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.10183","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:9719b28d49f9f8efc3e504b65c508503b6fc5d38ffd356e198ef44aa8cf85d29","target":"record","created_at":"2026-05-17T23:48:30Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"f66c8aa0221b516f0005c502245236df9a54a0c1c12141fd82b572a9a0d3e3c4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2019-02-26T19:51:27Z","title_canon_sha256":"96871ec805ae9a1b0315e1dff88ba8d37af18a7d27e7b15270a7f4ae282503f0"},"schema_version":"1.0","source":{"id":"1902.10183","kind":"arxiv","version":1}},"canonical_sha256":"5513f3737a052b46ff1eb2d325c68376295b3cd0d043069287e6c1812835cdda","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5513f3737a052b46ff1eb2d325c68376295b3cd0d043069287e6c1812835cdda","first_computed_at":"2026-05-17T23:48:30.244976Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:48:30.244976Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/2B0aKCBCO2ccJ45VJACY5vf+SUviDq+IjL6f4o8l7rpeLhXqkMcxNKujmpsj2fGqJUZlNSCLMqXCysvBZC6Cg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:48:30.245495Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.10183","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9719b28d49f9f8efc3e504b65c508503b6fc5d38ffd356e198ef44aa8cf85d29","sha256:127adcbd19a7c2690e2b875d1f0a90245b9d79dc148d7184bc6d101481a511cf"],"state_sha256":"4e408ce872bd0d6a1a6b8d1db9f642769b7a7fbdeb983abde31ca01ccebdd1c2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sf0/MHjxdx9Ob9spiOMgtECnQmBQYMkPr+3oi34/1PQF3VsdX99acdfjGwdpprOHhKFYy0Z6IS8OXniqmJryCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T02:16:38.005288Z","bundle_sha256":"8a735e9812f5570aee0849baf16a1ee41e2e888a874ea660f76c56b69e23d0b1"}}