{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:3375OM7634KOLE337Y7VBHANXE","short_pith_number":"pith:3375OM76","canonical_record":{"source":{"id":"1303.4123","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-03-17T23:50:02Z","cross_cats_sorted":[],"title_canon_sha256":"ae79f666e629c4f9fb668f1b84987ebfa4d4ba96a4fe7485fc9692a9c826ecf0","abstract_canon_sha256":"f2edddc822214db8908c060705d79b31e656e90c9bc516602c465f8b3b208f4f"},"schema_version":"1.0"},"canonical_sha256":"deffd733fedf14e5937bfe3f509c0db93d7c32ae204fbc5a2e33339a85e8ae3a","source":{"kind":"arxiv","id":"1303.4123","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.4123","created_at":"2026-05-18T01:51:01Z"},{"alias_kind":"arxiv_version","alias_value":"1303.4123v1","created_at":"2026-05-18T01:51:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.4123","created_at":"2026-05-18T01:51:01Z"},{"alias_kind":"pith_short_12","alias_value":"3375OM7634KO","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"3375OM7634KOLE33","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"3375OM76","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:3375OM7634KOLE337Y7VBHANXE","target":"record","payload":{"canonical_record":{"source":{"id":"1303.4123","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-03-17T23:50:02Z","cross_cats_sorted":[],"title_canon_sha256":"ae79f666e629c4f9fb668f1b84987ebfa4d4ba96a4fe7485fc9692a9c826ecf0","abstract_canon_sha256":"f2edddc822214db8908c060705d79b31e656e90c9bc516602c465f8b3b208f4f"},"schema_version":"1.0"},"canonical_sha256":"deffd733fedf14e5937bfe3f509c0db93d7c32ae204fbc5a2e33339a85e8ae3a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:01.417141Z","signature_b64":"D0wFxEh4zSvFRxGtVmjZMLlLtPf7BGIufwfNQUE4SESqS1IIC6N85r8bIPYAqL4t52qN0QC5JAbhdcf29ammCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"deffd733fedf14e5937bfe3f509c0db93d7c32ae204fbc5a2e33339a85e8ae3a","last_reissued_at":"2026-05-18T01:51:01.416659Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:01.416659Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.4123","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":"2026-05-18T01:51:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Fark1gzhn72MRpnmAT0mp44ThFNd9tK1fJfd2bVRkMN1Q9V8qWqIOkvfxM/FGO5moRQMvQpmQrZU7jWV7kOIAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T17:56:30.225285Z"},"content_sha256":"f2981ed897f41731acc5782a56d6e2082c38c64371b04cd8cd02c84b07190b61","schema_version":"1.0","event_id":"sha256:f2981ed897f41731acc5782a56d6e2082c38c64371b04cd8cd02c84b07190b61"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:3375OM7634KOLE337Y7VBHANXE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extending the Planetary Mass Function to Earth Mass by Microlensing at Moderately High Magnification","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.EP","authors_text":"Anna Niemiec, Charlotte Airey, Christine Botzler, Dimitri Douchin, Ellen Barnard, Fumio Abe, Julie Baudrey, Lydia Philpott, Matthew Freeman, Nicholas Rattenbury, Patricia Larsen, Philip Yock, Yvette Perrott","submitted_at":"2013-03-17T23:50:02Z","abstract_excerpt":"A measurement by microlensing of the planetary mass function of planets with masses ranging from 5M_E to 10M_J and orbital radii from 0.5 to 10 AU was reported recently. A strategy for extending the mass range down to (1-3)M_E is proposed here. This entails monitoring the peaks of a few tens of microlensing events with moderately high magnifications with 1-2m class telescopes. Planets of a few Earth masses are found to produce deviations of ~ 5% to the peaks of microlensing light curves with durations ~ (0.7-3)hr in events with magnification ~ 100 if the projected separation of the planet lies"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.4123","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":"2026-05-18T01:51:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HD+zAl1AuRDc+RMYHqvDRotP0mplJubG9HfDI67GccCSEYcbjB+bs1FsdBsOlFv2RSnacc2NaM7Os3YX6qV6Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-20T17:56:30.225653Z"},"content_sha256":"8da043777be95d2e608a85e678575a8dfa4ee75adb72ac6d6d1f9d1a88ec55c5","schema_version":"1.0","event_id":"sha256:8da043777be95d2e608a85e678575a8dfa4ee75adb72ac6d6d1f9d1a88ec55c5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3375OM7634KOLE337Y7VBHANXE/bundle.json","state_url":"https://pith.science/pith/3375OM7634KOLE337Y7VBHANXE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3375OM7634KOLE337Y7VBHANXE/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":"2026-05-20T17:56:30Z","links":{"resolver":"https://pith.science/pith/3375OM7634KOLE337Y7VBHANXE","bundle":"https://pith.science/pith/3375OM7634KOLE337Y7VBHANXE/bundle.json","state":"https://pith.science/pith/3375OM7634KOLE337Y7VBHANXE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3375OM7634KOLE337Y7VBHANXE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:3375OM7634KOLE337Y7VBHANXE","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":"f2edddc822214db8908c060705d79b31e656e90c9bc516602c465f8b3b208f4f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-03-17T23:50:02Z","title_canon_sha256":"ae79f666e629c4f9fb668f1b84987ebfa4d4ba96a4fe7485fc9692a9c826ecf0"},"schema_version":"1.0","source":{"id":"1303.4123","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.4123","created_at":"2026-05-18T01:51:01Z"},{"alias_kind":"arxiv_version","alias_value":"1303.4123v1","created_at":"2026-05-18T01:51:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.4123","created_at":"2026-05-18T01:51:01Z"},{"alias_kind":"pith_short_12","alias_value":"3375OM7634KO","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"3375OM7634KOLE33","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"3375OM76","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:8da043777be95d2e608a85e678575a8dfa4ee75adb72ac6d6d1f9d1a88ec55c5","target":"graph","created_at":"2026-05-18T01:51:01Z","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":"A measurement by microlensing of the planetary mass function of planets with masses ranging from 5M_E to 10M_J and orbital radii from 0.5 to 10 AU was reported recently. A strategy for extending the mass range down to (1-3)M_E is proposed here. This entails monitoring the peaks of a few tens of microlensing events with moderately high magnifications with 1-2m class telescopes. Planets of a few Earth masses are found to produce deviations of ~ 5% to the peaks of microlensing light curves with durations ~ (0.7-3)hr in events with magnification ~ 100 if the projected separation of the planet lies","authors_text":"Anna Niemiec, Charlotte Airey, Christine Botzler, Dimitri Douchin, Ellen Barnard, Fumio Abe, Julie Baudrey, Lydia Philpott, Matthew Freeman, Nicholas Rattenbury, Patricia Larsen, Philip Yock, Yvette Perrott","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-03-17T23:50:02Z","title":"Extending the Planetary Mass Function to Earth Mass by Microlensing at Moderately High Magnification"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.4123","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:f2981ed897f41731acc5782a56d6e2082c38c64371b04cd8cd02c84b07190b61","target":"record","created_at":"2026-05-18T01:51:01Z","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":"f2edddc822214db8908c060705d79b31e656e90c9bc516602c465f8b3b208f4f","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.EP","submitted_at":"2013-03-17T23:50:02Z","title_canon_sha256":"ae79f666e629c4f9fb668f1b84987ebfa4d4ba96a4fe7485fc9692a9c826ecf0"},"schema_version":"1.0","source":{"id":"1303.4123","kind":"arxiv","version":1}},"canonical_sha256":"deffd733fedf14e5937bfe3f509c0db93d7c32ae204fbc5a2e33339a85e8ae3a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"deffd733fedf14e5937bfe3f509c0db93d7c32ae204fbc5a2e33339a85e8ae3a","first_computed_at":"2026-05-18T01:51:01.416659Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:01.416659Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"D0wFxEh4zSvFRxGtVmjZMLlLtPf7BGIufwfNQUE4SESqS1IIC6N85r8bIPYAqL4t52qN0QC5JAbhdcf29ammCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:01.417141Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.4123","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f2981ed897f41731acc5782a56d6e2082c38c64371b04cd8cd02c84b07190b61","sha256:8da043777be95d2e608a85e678575a8dfa4ee75adb72ac6d6d1f9d1a88ec55c5"],"state_sha256":"3730611b3315ec066dd011e785965ef7d038fd4c3b18b12f35f05417ee05f283"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OCeNGrzgrc8b3CNI/aafwDV3lBMs09F1Y1HHfOXKYyezPbVYvTLDX6vkH9vobbUJOJ8BwYSrRQcbFqu3M89RCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-20T17:56:30.227890Z","bundle_sha256":"edad07fa2669ae3af2c01fea1383e6ce27cc73bda95f57329926351febe0a823"}}