{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:UW6TJGG3OG7C6IKYWUFIA32CBH","short_pith_number":"pith:UW6TJGG3","canonical_record":{"source":{"id":"2310.04335","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-10-06T15:55:57Z","cross_cats_sorted":[],"title_canon_sha256":"7b44cb54c7c9e376fb6f546f052a7f8eb7ab9d2bcdc4c7dd744170dd939ac844","abstract_canon_sha256":"a78b2c44810810b681b0297fd48531f7bb38a8caf99b14829d9f462d798aec0a"},"schema_version":"1.0"},"canonical_sha256":"a5bd3498db71be2f2158b50a806f4209d1605a6dbee223dca8e7f883ab8e984c","source":{"kind":"arxiv","id":"2310.04335","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2310.04335","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"arxiv_version","alias_value":"2310.04335v2","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2310.04335","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"pith_short_12","alias_value":"UW6TJGG3OG7C","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"pith_short_16","alias_value":"UW6TJGG3OG7C6IKY","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"pith_short_8","alias_value":"UW6TJGG3","created_at":"2026-07-05T06:58:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:UW6TJGG3OG7C6IKYWUFIA32CBH","target":"record","payload":{"canonical_record":{"source":{"id":"2310.04335","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-10-06T15:55:57Z","cross_cats_sorted":[],"title_canon_sha256":"7b44cb54c7c9e376fb6f546f052a7f8eb7ab9d2bcdc4c7dd744170dd939ac844","abstract_canon_sha256":"a78b2c44810810b681b0297fd48531f7bb38a8caf99b14829d9f462d798aec0a"},"schema_version":"1.0"},"canonical_sha256":"a5bd3498db71be2f2158b50a806f4209d1605a6dbee223dca8e7f883ab8e984c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:58:43.456275Z","signature_b64":"oBb/zei2BUVz67tFgQtilI+zfZQg5c6uGLEhfQ9wslWMn7LpvAyHFgLD6BOzaQoLIC4OLJ1iGIJXhqQlOZ57BA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a5bd3498db71be2f2158b50a806f4209d1605a6dbee223dca8e7f883ab8e984c","last_reissued_at":"2026-07-05T06:58:43.455766Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:58:43.455766Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2310.04335","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:58:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"trRhGKYivzQe60105uA54C8m4ehBUq3zZdUSf0TwP6pho4fSBRi+lcZvJmq8/8EqHzPA5Hiwo8U1u+1IdrzADw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T04:34:53.653054Z"},"content_sha256":"58134f9b983c98732959502b7916579b4f5936bed633f0e159c11332365e7db7","schema_version":"1.0","event_id":"sha256:58134f9b983c98732959502b7916579b4f5936bed633f0e159c11332365e7db7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:UW6TJGG3OG7C6IKYWUFIA32CBH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A detailed study of the polarisation convention of the Giant Metrewave Radio Telescope","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.IM","authors_text":"Barnali Das, Biny Sebastian, Devojyoti Kansabanik, Poonam Chandra, Preeti Kharb, Sanjay Kudale, Silpa Sasikumar, S. Suresh Kumar","submitted_at":"2023-10-06T15:55:57Z","abstract_excerpt":"Our work aims to investigate the polarisation convention of the Giant Metrewave Radio Telescope (GMRT) radio telescope and understand whether the telescope follows the standard IAU/IEEE convention. The GMRT antennas are prime focus antennas, i.e. the radiation falling on the antenna feed reverses its circular polarisation. If this reflection is not taken into account, it will result in a reversal of circular polarisation. We carried out several tests to understand the GMRT polarisation convention. The observations were carried out on several strong and highly polarised pulsars with known polar"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.04335","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2310.04335/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:58:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HB0sT7YZD3jOqbTQCjX6ZHOLKMHV/gZEBvf4aHnrP5R0SZz30QWnMdPk3G7ElYJBoBUEZESiBRpmRHZphtrnDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T04:34:53.653565Z"},"content_sha256":"936f0aee7077a5eed563a4dfe358cc9e3712447bbcaffd76b6a92a916b9031ed","schema_version":"1.0","event_id":"sha256:936f0aee7077a5eed563a4dfe358cc9e3712447bbcaffd76b6a92a916b9031ed"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UW6TJGG3OG7C6IKYWUFIA32CBH/bundle.json","state_url":"https://pith.science/pith/UW6TJGG3OG7C6IKYWUFIA32CBH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UW6TJGG3OG7C6IKYWUFIA32CBH/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":"2026-08-17T04:34:53Z","links":{"resolver":"https://pith.science/pith/UW6TJGG3OG7C6IKYWUFIA32CBH","bundle":"https://pith.science/pith/UW6TJGG3OG7C6IKYWUFIA32CBH/bundle.json","state":"https://pith.science/pith/UW6TJGG3OG7C6IKYWUFIA32CBH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UW6TJGG3OG7C6IKYWUFIA32CBH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:UW6TJGG3OG7C6IKYWUFIA32CBH","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":"a78b2c44810810b681b0297fd48531f7bb38a8caf99b14829d9f462d798aec0a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-10-06T15:55:57Z","title_canon_sha256":"7b44cb54c7c9e376fb6f546f052a7f8eb7ab9d2bcdc4c7dd744170dd939ac844"},"schema_version":"1.0","source":{"id":"2310.04335","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2310.04335","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"arxiv_version","alias_value":"2310.04335v2","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2310.04335","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"pith_short_12","alias_value":"UW6TJGG3OG7C","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"pith_short_16","alias_value":"UW6TJGG3OG7C6IKY","created_at":"2026-07-05T06:58:43Z"},{"alias_kind":"pith_short_8","alias_value":"UW6TJGG3","created_at":"2026-07-05T06:58:43Z"}],"graph_snapshots":[{"event_id":"sha256:936f0aee7077a5eed563a4dfe358cc9e3712447bbcaffd76b6a92a916b9031ed","target":"graph","created_at":"2026-07-05T06:58:43Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2310.04335/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Our work aims to investigate the polarisation convention of the Giant Metrewave Radio Telescope (GMRT) radio telescope and understand whether the telescope follows the standard IAU/IEEE convention. The GMRT antennas are prime focus antennas, i.e. the radiation falling on the antenna feed reverses its circular polarisation. If this reflection is not taken into account, it will result in a reversal of circular polarisation. We carried out several tests to understand the GMRT polarisation convention. The observations were carried out on several strong and highly polarised pulsars with known polar","authors_text":"Barnali Das, Biny Sebastian, Devojyoti Kansabanik, Poonam Chandra, Preeti Kharb, Sanjay Kudale, Silpa Sasikumar, S. Suresh Kumar","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-10-06T15:55:57Z","title":"A detailed study of the polarisation convention of the Giant Metrewave Radio Telescope"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2310.04335","kind":"arxiv","version":2},"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":"sha256:58134f9b983c98732959502b7916579b4f5936bed633f0e159c11332365e7db7","target":"record","created_at":"2026-07-05T06:58:43Z","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":"a78b2c44810810b681b0297fd48531f7bb38a8caf99b14829d9f462d798aec0a","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2023-10-06T15:55:57Z","title_canon_sha256":"7b44cb54c7c9e376fb6f546f052a7f8eb7ab9d2bcdc4c7dd744170dd939ac844"},"schema_version":"1.0","source":{"id":"2310.04335","kind":"arxiv","version":2}},"canonical_sha256":"a5bd3498db71be2f2158b50a806f4209d1605a6dbee223dca8e7f883ab8e984c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a5bd3498db71be2f2158b50a806f4209d1605a6dbee223dca8e7f883ab8e984c","first_computed_at":"2026-07-05T06:58:43.455766Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:58:43.455766Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oBb/zei2BUVz67tFgQtilI+zfZQg5c6uGLEhfQ9wslWMn7LpvAyHFgLD6BOzaQoLIC4OLJ1iGIJXhqQlOZ57BA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:58:43.456275Z","signed_message":"canonical_sha256_bytes"},"source_id":"2310.04335","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:58134f9b983c98732959502b7916579b4f5936bed633f0e159c11332365e7db7","sha256:936f0aee7077a5eed563a4dfe358cc9e3712447bbcaffd76b6a92a916b9031ed"],"state_sha256":"a5eb957ddae154f9fa479b423300fa51a6ca0b5c8f02db0970f3dbf79a4d8cce"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"fJE9yXNT8c/wBLwEhBID4/1FrOwNl7zSzL2lDfuNS2ZncS8zVYyOF0GXmhYao+ImUH3GhwH7E1crVDoZALBaAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T04:34:53.659025Z","bundle_sha256":"8e6d9fdd7545b50254d96d1ac65cdb9e95a821a510af8ca2c06046a12e30d8ae"}}