{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:FHPWWX3SUCF5VXGPHMAVXKOU4J","short_pith_number":"pith:FHPWWX3S","canonical_record":{"source":{"id":"1609.00387","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-09-01T20:02:24Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"31b9b8d0189ec5699f841d1b4f5c17fd69ebe37a10cb4615facc2078bf7baf87","abstract_canon_sha256":"9e3f9b77d62ee5df28045ca11780a6da79061c15eb017e73fc3b65d75bc90b05"},"schema_version":"1.0"},"canonical_sha256":"29df6b5f72a08bdadccf3b015ba9d4e24ca7398ed28c78491e15b3263fd960fc","source":{"kind":"arxiv","id":"1609.00387","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00387","created_at":"2026-05-18T00:55:41Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00387v1","created_at":"2026-05-18T00:55:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00387","created_at":"2026-05-18T00:55:41Z"},{"alias_kind":"pith_short_12","alias_value":"FHPWWX3SUCF5","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FHPWWX3SUCF5VXGP","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FHPWWX3S","created_at":"2026-05-18T12:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:FHPWWX3SUCF5VXGPHMAVXKOU4J","target":"record","payload":{"canonical_record":{"source":{"id":"1609.00387","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-09-01T20:02:24Z","cross_cats_sorted":["astro-ph.CO"],"title_canon_sha256":"31b9b8d0189ec5699f841d1b4f5c17fd69ebe37a10cb4615facc2078bf7baf87","abstract_canon_sha256":"9e3f9b77d62ee5df28045ca11780a6da79061c15eb017e73fc3b65d75bc90b05"},"schema_version":"1.0"},"canonical_sha256":"29df6b5f72a08bdadccf3b015ba9d4e24ca7398ed28c78491e15b3263fd960fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:55:41.852220Z","signature_b64":"tKHl4eFYisx69iel9TiysBkx1xoO9FaDSFNPYM7pqRqoeCUxIfDJ6ZBUHvD+o1lLhCs3LE2Xqd8Ec66iTBJCDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"29df6b5f72a08bdadccf3b015ba9d4e24ca7398ed28c78491e15b3263fd960fc","last_reissued_at":"2026-05-18T00:55:41.851713Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:55:41.851713Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.00387","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":"2026-05-18T00:55:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uHIgBZd3MfkQsCGjP8s6zaTcYjRWmfWd8h2JEuVmIxQHadGBlGZ3W8cu35tYHHuYMYMcSmRgSxNxc+1A6CYqBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T14:35:54.376821Z"},"content_sha256":"9799b9ffd0a64b64170463c9baaf1b67679fad0d0be318215eb9a727291d416b","schema_version":"1.0","event_id":"sha256:9799b9ffd0a64b64170463c9baaf1b67679fad0d0be318215eb9a727291d416b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:FHPWWX3SUCF5VXGPHMAVXKOU4J","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Bow Ties in the Sky I: The Angular Structure of Inverse Compton Gamma-ray Halos in the Fermi Sky","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"Astrid Lamberts, Avery E. Broderick, Christoph Pfrommer, Ewald Puchwein, Mohamad Shalaby, Paul Tiede, Philip Chang","submitted_at":"2016-09-01T20:02:24Z","abstract_excerpt":"Extended inverse Compton halos are generally anticipated around extragalactic sources of gamma rays with energies above 100 GeV. These result from inverse Compton scattered cosmic microwave background photons by a population of high-energy electron/positron pairs produced by the annihilation of the high-energy gamma rays on the infrared background. Despite the observed attenuation of the high-energy gamma rays, the halo emission has yet to be directly detected. Here, we demonstrate that in most cases these halos are expected to be highly anisotropic, distributing the up-scattered gamma rays al"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00387","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":"2026-05-18T00:55:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"biW/g4dr0fWapFdyRIIwhqPl2mjcC3+FHaG/UQ112NA13HMMRhqaPeJLgdtwnbX1C04gmV+fPnptU3OlFrAaBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T14:35:54.377486Z"},"content_sha256":"ac879799b8c4ec5c17cc12dbf6d69760082551dfbcb11ca3b758a0fdcb3ec8c4","schema_version":"1.0","event_id":"sha256:ac879799b8c4ec5c17cc12dbf6d69760082551dfbcb11ca3b758a0fdcb3ec8c4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FHPWWX3SUCF5VXGPHMAVXKOU4J/bundle.json","state_url":"https://pith.science/pith/FHPWWX3SUCF5VXGPHMAVXKOU4J/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FHPWWX3SUCF5VXGPHMAVXKOU4J/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":"2026-05-24T14:35:54Z","links":{"resolver":"https://pith.science/pith/FHPWWX3SUCF5VXGPHMAVXKOU4J","bundle":"https://pith.science/pith/FHPWWX3SUCF5VXGPHMAVXKOU4J/bundle.json","state":"https://pith.science/pith/FHPWWX3SUCF5VXGPHMAVXKOU4J/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FHPWWX3SUCF5VXGPHMAVXKOU4J/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:FHPWWX3SUCF5VXGPHMAVXKOU4J","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":"9e3f9b77d62ee5df28045ca11780a6da79061c15eb017e73fc3b65d75bc90b05","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-09-01T20:02:24Z","title_canon_sha256":"31b9b8d0189ec5699f841d1b4f5c17fd69ebe37a10cb4615facc2078bf7baf87"},"schema_version":"1.0","source":{"id":"1609.00387","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.00387","created_at":"2026-05-18T00:55:41Z"},{"alias_kind":"arxiv_version","alias_value":"1609.00387v1","created_at":"2026-05-18T00:55:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.00387","created_at":"2026-05-18T00:55:41Z"},{"alias_kind":"pith_short_12","alias_value":"FHPWWX3SUCF5","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"FHPWWX3SUCF5VXGP","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"FHPWWX3S","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:ac879799b8c4ec5c17cc12dbf6d69760082551dfbcb11ca3b758a0fdcb3ec8c4","target":"graph","created_at":"2026-05-18T00:55:41Z","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":"Extended inverse Compton halos are generally anticipated around extragalactic sources of gamma rays with energies above 100 GeV. These result from inverse Compton scattered cosmic microwave background photons by a population of high-energy electron/positron pairs produced by the annihilation of the high-energy gamma rays on the infrared background. Despite the observed attenuation of the high-energy gamma rays, the halo emission has yet to be directly detected. Here, we demonstrate that in most cases these halos are expected to be highly anisotropic, distributing the up-scattered gamma rays al","authors_text":"Astrid Lamberts, Avery E. Broderick, Christoph Pfrommer, Ewald Puchwein, Mohamad Shalaby, Paul Tiede, Philip Chang","cross_cats":["astro-ph.CO"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-09-01T20:02:24Z","title":"Bow Ties in the Sky I: The Angular Structure of Inverse Compton Gamma-ray Halos in the Fermi Sky"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.00387","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":"sha256:9799b9ffd0a64b64170463c9baaf1b67679fad0d0be318215eb9a727291d416b","target":"record","created_at":"2026-05-18T00:55:41Z","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":"9e3f9b77d62ee5df28045ca11780a6da79061c15eb017e73fc3b65d75bc90b05","cross_cats_sorted":["astro-ph.CO"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2016-09-01T20:02:24Z","title_canon_sha256":"31b9b8d0189ec5699f841d1b4f5c17fd69ebe37a10cb4615facc2078bf7baf87"},"schema_version":"1.0","source":{"id":"1609.00387","kind":"arxiv","version":1}},"canonical_sha256":"29df6b5f72a08bdadccf3b015ba9d4e24ca7398ed28c78491e15b3263fd960fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"29df6b5f72a08bdadccf3b015ba9d4e24ca7398ed28c78491e15b3263fd960fc","first_computed_at":"2026-05-18T00:55:41.851713Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:55:41.851713Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tKHl4eFYisx69iel9TiysBkx1xoO9FaDSFNPYM7pqRqoeCUxIfDJ6ZBUHvD+o1lLhCs3LE2Xqd8Ec66iTBJCDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:55:41.852220Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.00387","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9799b9ffd0a64b64170463c9baaf1b67679fad0d0be318215eb9a727291d416b","sha256:ac879799b8c4ec5c17cc12dbf6d69760082551dfbcb11ca3b758a0fdcb3ec8c4"],"state_sha256":"e31b4e5963a47730f37122b77b0e02b234218112575db137b2c737368700a1bd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ICrwEN8wYAQqcga/EJYZDK/CcWo1uVrZVeS+9QOvgMP9UaHpBOWJCsa+5TDFa0Ipf+p1cWBdYtR6qiniuiMYBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T14:35:54.381142Z","bundle_sha256":"65149d3e27929da1470f7ef1172acaf9457bf96de04dba0f7275d2eb6217f468"}}