{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:44SXXCIDDJM5TJGINCSDDW2XLP","short_pith_number":"pith:44SXXCID","canonical_record":{"source":{"id":"1506.00586","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-01T17:52:53Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"e96a7f805318bf75e74f6e0c51c4df3203ee6b9e8b3f72f259c33288485fc31c","abstract_canon_sha256":"22a6fd556e9cc0d3b3dfc7ab82d0ff01fb603160df837c2bfdc42ebb7f338709"},"schema_version":"1.0"},"canonical_sha256":"e7257b89031a59d9a4c868a431db575beeedb3345d5324733306152fab7e4779","source":{"kind":"arxiv","id":"1506.00586","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.00586","created_at":"2026-05-18T01:59:54Z"},{"alias_kind":"arxiv_version","alias_value":"1506.00586v1","created_at":"2026-05-18T01:59:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.00586","created_at":"2026-05-18T01:59:54Z"},{"alias_kind":"pith_short_12","alias_value":"44SXXCIDDJM5","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"44SXXCIDDJM5TJGI","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"44SXXCID","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:44SXXCIDDJM5TJGINCSDDW2XLP","target":"record","payload":{"canonical_record":{"source":{"id":"1506.00586","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-01T17:52:53Z","cross_cats_sorted":["astro-ph.HE"],"title_canon_sha256":"e96a7f805318bf75e74f6e0c51c4df3203ee6b9e8b3f72f259c33288485fc31c","abstract_canon_sha256":"22a6fd556e9cc0d3b3dfc7ab82d0ff01fb603160df837c2bfdc42ebb7f338709"},"schema_version":"1.0"},"canonical_sha256":"e7257b89031a59d9a4c868a431db575beeedb3345d5324733306152fab7e4779","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:59:54.208664Z","signature_b64":"3Bw+KtjUdOpcfoRPzEGK7jcW2w1uCiavFpzuGSiZY8iYFjW6sGdPK3IAMSrjDEiiLJSXusvDI1NjQkEkNUqXAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7257b89031a59d9a4c868a431db575beeedb3345d5324733306152fab7e4779","last_reissued_at":"2026-05-18T01:59:54.208182Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:59:54.208182Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.00586","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":"2026-05-18T01:59:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4Frp7BEY0lv9hop8vW4qzswwhWO4gP6ztYiEdRDcriSBASQxUH9tEU8VQMl7NyqMS93/vQ7jlzAka2vRMe1KCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:18:20.258031Z"},"content_sha256":"c0a7d109d03b86a967bb84f8e3ce86f4dade1afb6eed4a33b6d5dd592c2aaae8","schema_version":"1.0","event_id":"sha256:c0a7d109d03b86a967bb84f8e3ce86f4dade1afb6eed4a33b6d5dd592c2aaae8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:44SXXCIDDJM5TJGINCSDDW2XLP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-band variability in the blazar 3C 273 with XMM-Newton","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.HE"],"primary_cat":"astro-ph.GA","authors_text":"Alok C. Gupta, Jai Bhagwan, Kalpana Duorah, Nibedita Kalita, Paul J. Wiita","submitted_at":"2015-06-01T17:52:53Z","abstract_excerpt":"We have undertaken a nearly simultaneous optical/UV and X-ray variability study of the flat spectrum radio quasar, 3C 273 using data available from the XMM$-$Newton satellite mission from June 2000 to July 2012. Here we focus on the multi-wavelength flux variability on both intra-day and long time scales of this very well known radio-loud source. We found high flux variability over long time scales in all bands for which observations were made. The optical/UV variability amplitude was more than twice than that in the X-ray bands. There is some frequency dependence of the variability in optical"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.00586","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":"2026-05-18T01:59:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/RAsYerMzAVk6HfEC3DR8SsbPa1lUN85UyFKO8qC5E1MWRoIGWb5haOOKPXJnOEKRq6Vj22N5OZ0eqWZIUT7Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T02:18:20.258419Z"},"content_sha256":"562a735d9789faaaa927b51f11c0f6e9adfef9f37826230cc7da6b2f897c27dc","schema_version":"1.0","event_id":"sha256:562a735d9789faaaa927b51f11c0f6e9adfef9f37826230cc7da6b2f897c27dc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/44SXXCIDDJM5TJGINCSDDW2XLP/bundle.json","state_url":"https://pith.science/pith/44SXXCIDDJM5TJGINCSDDW2XLP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/44SXXCIDDJM5TJGINCSDDW2XLP/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":"2026-06-03T02:18:20Z","links":{"resolver":"https://pith.science/pith/44SXXCIDDJM5TJGINCSDDW2XLP","bundle":"https://pith.science/pith/44SXXCIDDJM5TJGINCSDDW2XLP/bundle.json","state":"https://pith.science/pith/44SXXCIDDJM5TJGINCSDDW2XLP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/44SXXCIDDJM5TJGINCSDDW2XLP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:44SXXCIDDJM5TJGINCSDDW2XLP","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":"22a6fd556e9cc0d3b3dfc7ab82d0ff01fb603160df837c2bfdc42ebb7f338709","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-01T17:52:53Z","title_canon_sha256":"e96a7f805318bf75e74f6e0c51c4df3203ee6b9e8b3f72f259c33288485fc31c"},"schema_version":"1.0","source":{"id":"1506.00586","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.00586","created_at":"2026-05-18T01:59:54Z"},{"alias_kind":"arxiv_version","alias_value":"1506.00586v1","created_at":"2026-05-18T01:59:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.00586","created_at":"2026-05-18T01:59:54Z"},{"alias_kind":"pith_short_12","alias_value":"44SXXCIDDJM5","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"44SXXCIDDJM5TJGI","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"44SXXCID","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:562a735d9789faaaa927b51f11c0f6e9adfef9f37826230cc7da6b2f897c27dc","target":"graph","created_at":"2026-05-18T01:59:54Z","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 undertaken a nearly simultaneous optical/UV and X-ray variability study of the flat spectrum radio quasar, 3C 273 using data available from the XMM$-$Newton satellite mission from June 2000 to July 2012. Here we focus on the multi-wavelength flux variability on both intra-day and long time scales of this very well known radio-loud source. We found high flux variability over long time scales in all bands for which observations were made. The optical/UV variability amplitude was more than twice than that in the X-ray bands. There is some frequency dependence of the variability in optical","authors_text":"Alok C. Gupta, Jai Bhagwan, Kalpana Duorah, Nibedita Kalita, Paul J. Wiita","cross_cats":["astro-ph.HE"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-01T17:52:53Z","title":"Multi-band variability in the blazar 3C 273 with XMM-Newton"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.00586","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:c0a7d109d03b86a967bb84f8e3ce86f4dade1afb6eed4a33b6d5dd592c2aaae8","target":"record","created_at":"2026-05-18T01:59:54Z","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":"22a6fd556e9cc0d3b3dfc7ab82d0ff01fb603160df837c2bfdc42ebb7f338709","cross_cats_sorted":["astro-ph.HE"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.GA","submitted_at":"2015-06-01T17:52:53Z","title_canon_sha256":"e96a7f805318bf75e74f6e0c51c4df3203ee6b9e8b3f72f259c33288485fc31c"},"schema_version":"1.0","source":{"id":"1506.00586","kind":"arxiv","version":1}},"canonical_sha256":"e7257b89031a59d9a4c868a431db575beeedb3345d5324733306152fab7e4779","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7257b89031a59d9a4c868a431db575beeedb3345d5324733306152fab7e4779","first_computed_at":"2026-05-18T01:59:54.208182Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:59:54.208182Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3Bw+KtjUdOpcfoRPzEGK7jcW2w1uCiavFpzuGSiZY8iYFjW6sGdPK3IAMSrjDEiiLJSXusvDI1NjQkEkNUqXAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:59:54.208664Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.00586","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0a7d109d03b86a967bb84f8e3ce86f4dade1afb6eed4a33b6d5dd592c2aaae8","sha256:562a735d9789faaaa927b51f11c0f6e9adfef9f37826230cc7da6b2f897c27dc"],"state_sha256":"f2101ebec14a56807ff1d1641687f96b3a862b5925182c429b139ff5ed110b37"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"irnZdwryDdA2KPR60witnqwq0nqJNMKVSC3UdOBvEVc3B4+LW69N50y3CIQW7/CJ1dds5FE9diadWZbMjAdBDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T02:18:20.260437Z","bundle_sha256":"5e7a71c9858065722aa44de55d7db2c0f39e7d4be9e5616ce14c54e4207aa1a3"}}