{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:TKMLWC6YJVFTV6FZELYM2BDQSW","short_pith_number":"pith:TKMLWC6Y","canonical_record":{"source":{"id":"0906.0223","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T07:06:32Z","cross_cats_sorted":[],"title_canon_sha256":"b6e15c2ecdb44abbc2aae8fa93d7ded090c4e02931b88be0b205cd2db9be1f84","abstract_canon_sha256":"4785c0addae8f8d57eb7e3fce5fae009c26f9abc9c9e2c9e560caad013a4f18e"},"schema_version":"1.0"},"canonical_sha256":"9a98bb0bd84d4b3af8b922f0cd0470959d861ed5aa875f158c360cfb8ae62ec4","source":{"kind":"arxiv","id":"0906.0223","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.0223","created_at":"2026-05-18T04:29:42Z"},{"alias_kind":"arxiv_version","alias_value":"0906.0223v1","created_at":"2026-05-18T04:29:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.0223","created_at":"2026-05-18T04:29:42Z"},{"alias_kind":"pith_short_12","alias_value":"TKMLWC6YJVFT","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"TKMLWC6YJVFTV6FZ","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"TKMLWC6Y","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:TKMLWC6YJVFTV6FZELYM2BDQSW","target":"record","payload":{"canonical_record":{"source":{"id":"0906.0223","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T07:06:32Z","cross_cats_sorted":[],"title_canon_sha256":"b6e15c2ecdb44abbc2aae8fa93d7ded090c4e02931b88be0b205cd2db9be1f84","abstract_canon_sha256":"4785c0addae8f8d57eb7e3fce5fae009c26f9abc9c9e2c9e560caad013a4f18e"},"schema_version":"1.0"},"canonical_sha256":"9a98bb0bd84d4b3af8b922f0cd0470959d861ed5aa875f158c360cfb8ae62ec4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:29:42.868558Z","signature_b64":"pHG1NZnZNQ2HGrHa0rmhSeVelU28VDP8PwceB4+tQ8CAy2yvIVMi30Y2zBx1wY3t1UMS5rRYfPcvTJRuyJJVCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9a98bb0bd84d4b3af8b922f0cd0470959d861ed5aa875f158c360cfb8ae62ec4","last_reissued_at":"2026-05-18T04:29:42.867934Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:29:42.867934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0906.0223","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":"2026-05-18T04:29:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SGDrbZhYGwriGr7DkSnG2oXFR9XFCS2La/milFvNKza9m9h6wY1UyB6zHsyOyWSwJVvDW8hXTn2ri0qZLHiNAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:49:30.356443Z"},"content_sha256":"8d8c5827a0f33f572cd193edf8445176f1a43bd9fc20f172598a673febab383a","schema_version":"1.0","event_id":"sha256:8d8c5827a0f33f572cd193edf8445176f1a43bd9fc20f172598a673febab383a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:TKMLWC6YJVFTV6FZELYM2BDQSW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Relics of Double Radio Sources","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"K. S. Dwarakanath (RRI), Ruta Kale (RRI)","submitted_at":"2009-06-01T07:06:32Z","abstract_excerpt":"We have formed a new sample which consists of extended extragalactic radio sources without obvious active galactic nuclei (AGN) in them. Most of these sources appear to be dead double radio sources. These sources with steep spectra ($\\alpha < $ -1.8; S $\\propto \\nu^{\\alpha}$) were identified using the 74 (VLSS) and the 1400 MHz (NVSS) surveys and further imaged using the Very Large Array (VLA) and the Giant Meterwave RadioTelescope (GMRT). The radio morphologies of these sources are rather unusual in the sense that no obvious cores and jets are detected in these sources, but, two extended lobe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.0223","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":"2026-05-18T04:29:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bvo2RWYKuLrw08f21fyFaYeiG1IK6IEeXff7B7RnLJ2FK3V9IjPSDQg8uRqTOCymSl0jofjafM9DU/0UPibKCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:49:30.357071Z"},"content_sha256":"328e39fa40b90d8b171950bff7b0cffcb08d55450498019e3f763a1b201709ec","schema_version":"1.0","event_id":"sha256:328e39fa40b90d8b171950bff7b0cffcb08d55450498019e3f763a1b201709ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TKMLWC6YJVFTV6FZELYM2BDQSW/bundle.json","state_url":"https://pith.science/pith/TKMLWC6YJVFTV6FZELYM2BDQSW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TKMLWC6YJVFTV6FZELYM2BDQSW/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":"2026-06-04T08:49:30Z","links":{"resolver":"https://pith.science/pith/TKMLWC6YJVFTV6FZELYM2BDQSW","bundle":"https://pith.science/pith/TKMLWC6YJVFTV6FZELYM2BDQSW/bundle.json","state":"https://pith.science/pith/TKMLWC6YJVFTV6FZELYM2BDQSW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TKMLWC6YJVFTV6FZELYM2BDQSW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:TKMLWC6YJVFTV6FZELYM2BDQSW","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":"4785c0addae8f8d57eb7e3fce5fae009c26f9abc9c9e2c9e560caad013a4f18e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T07:06:32Z","title_canon_sha256":"b6e15c2ecdb44abbc2aae8fa93d7ded090c4e02931b88be0b205cd2db9be1f84"},"schema_version":"1.0","source":{"id":"0906.0223","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0906.0223","created_at":"2026-05-18T04:29:42Z"},{"alias_kind":"arxiv_version","alias_value":"0906.0223v1","created_at":"2026-05-18T04:29:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0906.0223","created_at":"2026-05-18T04:29:42Z"},{"alias_kind":"pith_short_12","alias_value":"TKMLWC6YJVFT","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"TKMLWC6YJVFTV6FZ","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"TKMLWC6Y","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:328e39fa40b90d8b171950bff7b0cffcb08d55450498019e3f763a1b201709ec","target":"graph","created_at":"2026-05-18T04:29:42Z","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":"We have formed a new sample which consists of extended extragalactic radio sources without obvious active galactic nuclei (AGN) in them. Most of these sources appear to be dead double radio sources. These sources with steep spectra ($\\alpha < $ -1.8; S $\\propto \\nu^{\\alpha}$) were identified using the 74 (VLSS) and the 1400 MHz (NVSS) surveys and further imaged using the Very Large Array (VLA) and the Giant Meterwave RadioTelescope (GMRT). The radio morphologies of these sources are rather unusual in the sense that no obvious cores and jets are detected in these sources, but, two extended lobe","authors_text":"K. S. Dwarakanath (RRI), Ruta Kale (RRI)","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T07:06:32Z","title":"Relics of Double Radio Sources"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0906.0223","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":"sha256:8d8c5827a0f33f572cd193edf8445176f1a43bd9fc20f172598a673febab383a","target":"record","created_at":"2026-05-18T04:29:42Z","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":"4785c0addae8f8d57eb7e3fce5fae009c26f9abc9c9e2c9e560caad013a4f18e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2009-06-01T07:06:32Z","title_canon_sha256":"b6e15c2ecdb44abbc2aae8fa93d7ded090c4e02931b88be0b205cd2db9be1f84"},"schema_version":"1.0","source":{"id":"0906.0223","kind":"arxiv","version":1}},"canonical_sha256":"9a98bb0bd84d4b3af8b922f0cd0470959d861ed5aa875f158c360cfb8ae62ec4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"9a98bb0bd84d4b3af8b922f0cd0470959d861ed5aa875f158c360cfb8ae62ec4","first_computed_at":"2026-05-18T04:29:42.867934Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:29:42.867934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pHG1NZnZNQ2HGrHa0rmhSeVelU28VDP8PwceB4+tQ8CAy2yvIVMi30Y2zBx1wY3t1UMS5rRYfPcvTJRuyJJVCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:29:42.868558Z","signed_message":"canonical_sha256_bytes"},"source_id":"0906.0223","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d8c5827a0f33f572cd193edf8445176f1a43bd9fc20f172598a673febab383a","sha256:328e39fa40b90d8b171950bff7b0cffcb08d55450498019e3f763a1b201709ec"],"state_sha256":"75f218b9b24d30489348c9309210161f09991ff957f75245c1c6eca30af02037"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ilHLjaKTDqarTLDJUQySkLsE1JNc0LWV33lGBm6BpMIl1kiW8qHvhhrOVJrPETORVDNMnmKFZNjz1SAq2RbXCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T08:49:30.360260Z","bundle_sha256":"24f549c9675cdb27bb15335c9b096664a1f0832ea2a074732f61691f17eda61f"}}