{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:7UFHJAM7TPUG3GRC4LOUNLOBJL","short_pith_number":"pith:7UFHJAM7","canonical_record":{"source":{"id":"1001.0815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-06T05:05:03Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"2ae989912f981abb88a15a345a7eeb3fbcc83706ebdeb482b3cee0f502c16693","abstract_canon_sha256":"839b7213d82a510fbcd7f412718974d08873d665f912405ff6a5f2763c0e4de1"},"schema_version":"1.0"},"canonical_sha256":"fd0a74819f9be86d9a22e2dd46adc14ac51c463a5cc49d1e102bfd801d9abd92","source":{"kind":"arxiv","id":"1001.0815","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.0815","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"arxiv_version","alias_value":"1001.0815v1","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.0815","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"pith_short_12","alias_value":"7UFHJAM7TPUG","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"pith_short_16","alias_value":"7UFHJAM7TPUG3GRC","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"pith_short_8","alias_value":"7UFHJAM7","created_at":"2026-07-04T17:18:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:7UFHJAM7TPUG3GRC4LOUNLOBJL","target":"record","payload":{"canonical_record":{"source":{"id":"1001.0815","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-06T05:05:03Z","cross_cats_sorted":["astro-ph.GA"],"title_canon_sha256":"2ae989912f981abb88a15a345a7eeb3fbcc83706ebdeb482b3cee0f502c16693","abstract_canon_sha256":"839b7213d82a510fbcd7f412718974d08873d665f912405ff6a5f2763c0e4de1"},"schema_version":"1.0"},"canonical_sha256":"fd0a74819f9be86d9a22e2dd46adc14ac51c463a5cc49d1e102bfd801d9abd92","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:18:59.578327Z","signature_b64":"eENkK94qiBPlZMuhdgZEGeWQgFEAm6Ix0NvDV9DYrxPm0JTZymM0aVP+nO4F+Hs2hvtkp0J/XCiiPn4FnU0QBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fd0a74819f9be86d9a22e2dd46adc14ac51c463a5cc49d1e102bfd801d9abd92","last_reissued_at":"2026-07-04T17:18:59.577913Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:18:59.577913Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1001.0815","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":"2026-07-04T17:18:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7NIztTZUdDcc5km4FipsBL85XMDpl5Br/LUJjbTJUjYwmyluUElvHawOn5/FGvY0cmi96m/R/724EsX12TshBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:45:36.626255Z"},"content_sha256":"8b0bf6fcb023e15403fdfe3e7a39356e82385e484fb792f9ae33a73c99e3dc68","schema_version":"1.0","event_id":"sha256:8b0bf6fcb023e15403fdfe3e7a39356e82385e484fb792f9ae33a73c99e3dc68"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:7UFHJAM7TPUG3GRC4LOUNLOBJL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Supernova Remnants and the Interstellar Medium of M83: Imaging & Photometry with WFC3 on HST","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.GA"],"primary_cat":"astro-ph.CO","authors_text":"Abhijit Saha, Alistair R. Walker, Bradley C. Whitmore, Bruce Balick, Daniela Calzetti, Donald Hall, Erick Young, Francesco Paresce, Howard E. Bond, Jay A. Frogel, Joe Silk, John MacKenty, John Trauger, Jon A. Holtzman, Kip D. Kuntz, Knox S. Long, Marcella Carollo, Marco Sirianni, Max Mutchler, Michael A. Dopita, Michael Disney, Patrick McCarthy, Randy A. Kimble, Robert O'Connell, Rogier Windhorst, William P. Blair","submitted_at":"2010-01-06T05:05:03Z","abstract_excerpt":"We present Wide Field Camera 3 images taken with the Hubble Space Telescope within a single field in the southern grand design star-forming galaxy M83. Based on their size, morphology and photometry in continuum-subtracted H$\\alpha$, [\\SII], H$\\beta$, [\\OIII] and [\\OII] filters, we have identified 60 supernova remnant candidates, as well as a handful of young ejecta-dominated candidates. A catalog of these remnants, their sizes and, where possible their H$\\alpha$ fluxes are given. Radiative ages and pre-shock densities are derived from those SNR which have good photometry. The ages lie in the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.0815","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1001.0815/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":"2026-07-04T17:18:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"q4WKMQTDRBDZqPftsKZBJQ+ba6VCZGzooIjwoYQVRnn/OFT3PaRl83PSXH9S/bXHb001eVjINsYJ0frG2iQ+DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:45:36.627305Z"},"content_sha256":"8eea6627c02471a5650f852cfdf7d1fe42c2dc7a05130cf9929e08d98b45a734","schema_version":"1.0","event_id":"sha256:8eea6627c02471a5650f852cfdf7d1fe42c2dc7a05130cf9929e08d98b45a734"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7UFHJAM7TPUG3GRC4LOUNLOBJL/bundle.json","state_url":"https://pith.science/pith/7UFHJAM7TPUG3GRC4LOUNLOBJL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7UFHJAM7TPUG3GRC4LOUNLOBJL/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":"2026-08-03T18:45:36Z","links":{"resolver":"https://pith.science/pith/7UFHJAM7TPUG3GRC4LOUNLOBJL","bundle":"https://pith.science/pith/7UFHJAM7TPUG3GRC4LOUNLOBJL/bundle.json","state":"https://pith.science/pith/7UFHJAM7TPUG3GRC4LOUNLOBJL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7UFHJAM7TPUG3GRC4LOUNLOBJL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:7UFHJAM7TPUG3GRC4LOUNLOBJL","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":"839b7213d82a510fbcd7f412718974d08873d665f912405ff6a5f2763c0e4de1","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-06T05:05:03Z","title_canon_sha256":"2ae989912f981abb88a15a345a7eeb3fbcc83706ebdeb482b3cee0f502c16693"},"schema_version":"1.0","source":{"id":"1001.0815","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1001.0815","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"arxiv_version","alias_value":"1001.0815v1","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1001.0815","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"pith_short_12","alias_value":"7UFHJAM7TPUG","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"pith_short_16","alias_value":"7UFHJAM7TPUG3GRC","created_at":"2026-07-04T17:18:59Z"},{"alias_kind":"pith_short_8","alias_value":"7UFHJAM7","created_at":"2026-07-04T17:18:59Z"}],"graph_snapshots":[{"event_id":"sha256:8eea6627c02471a5650f852cfdf7d1fe42c2dc7a05130cf9929e08d98b45a734","target":"graph","created_at":"2026-07-04T17:18:59Z","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/1001.0815/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present Wide Field Camera 3 images taken with the Hubble Space Telescope within a single field in the southern grand design star-forming galaxy M83. Based on their size, morphology and photometry in continuum-subtracted H$\\alpha$, [\\SII], H$\\beta$, [\\OIII] and [\\OII] filters, we have identified 60 supernova remnant candidates, as well as a handful of young ejecta-dominated candidates. A catalog of these remnants, their sizes and, where possible their H$\\alpha$ fluxes are given. Radiative ages and pre-shock densities are derived from those SNR which have good photometry. The ages lie in the ","authors_text":"Abhijit Saha, Alistair R. Walker, Bradley C. Whitmore, Bruce Balick, Daniela Calzetti, Donald Hall, Erick Young, Francesco Paresce, Howard E. Bond, Jay A. Frogel, Joe Silk, John MacKenty, John Trauger, Jon A. Holtzman, Kip D. Kuntz, Knox S. Long, Marcella Carollo, Marco Sirianni, Max Mutchler, Michael A. Dopita, Michael Disney, Patrick McCarthy, Randy A. Kimble, Robert O'Connell, Rogier Windhorst, William P. Blair","cross_cats":["astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-06T05:05:03Z","title":"Supernova Remnants and the Interstellar Medium of M83: Imaging & Photometry with WFC3 on HST"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1001.0815","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":"sha256:8b0bf6fcb023e15403fdfe3e7a39356e82385e484fb792f9ae33a73c99e3dc68","target":"record","created_at":"2026-07-04T17:18:59Z","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":"839b7213d82a510fbcd7f412718974d08873d665f912405ff6a5f2763c0e4de1","cross_cats_sorted":["astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-01-06T05:05:03Z","title_canon_sha256":"2ae989912f981abb88a15a345a7eeb3fbcc83706ebdeb482b3cee0f502c16693"},"schema_version":"1.0","source":{"id":"1001.0815","kind":"arxiv","version":1}},"canonical_sha256":"fd0a74819f9be86d9a22e2dd46adc14ac51c463a5cc49d1e102bfd801d9abd92","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fd0a74819f9be86d9a22e2dd46adc14ac51c463a5cc49d1e102bfd801d9abd92","first_computed_at":"2026-07-04T17:18:59.577913Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:18:59.577913Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eENkK94qiBPlZMuhdgZEGeWQgFEAm6Ix0NvDV9DYrxPm0JTZymM0aVP+nO4F+Hs2hvtkp0J/XCiiPn4FnU0QBg==","signature_status":"signed_v1","signed_at":"2026-07-04T17:18:59.578327Z","signed_message":"canonical_sha256_bytes"},"source_id":"1001.0815","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8b0bf6fcb023e15403fdfe3e7a39356e82385e484fb792f9ae33a73c99e3dc68","sha256:8eea6627c02471a5650f852cfdf7d1fe42c2dc7a05130cf9929e08d98b45a734"],"state_sha256":"1a0729747a8ac66dd7f5b461f125539e209bfaee0ab518268f286bd150aeb968"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"EJ52R0Nx2WZnucsXHAKB/pXCke8h5Lpz60OZCD/0bv2lUfhL6T+/SF5g2BOvwpmxQ3+VbgZ7BWoJ00c8ej0RDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T18:45:36.633215Z","bundle_sha256":"9d7ecd9b1891f6e84ecdc4d962de0b6ce77f51d00115096ff1220a7a3dad6621"}}