{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:LETQNHO4VQ4RIPHOYR7TFVPTI6","short_pith_number":"pith:LETQNHO4","canonical_record":{"source":{"id":"1710.05938","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T18:01:14Z","cross_cats_sorted":[],"title_canon_sha256":"d0dac98e676111de5b7bf71060aaa7b8f3a98628ae88d6968eec1f71aa7be75a","abstract_canon_sha256":"cf3506e0fc40534867a2644348716a525d56a339c5c2aab5ca4370071a50042d"},"schema_version":"1.0"},"canonical_sha256":"5927069ddcac39143ceec47f32d5f3479af0381107740cb9f62aecd2d1a47427","source":{"kind":"arxiv","id":"1710.05938","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.05938","created_at":"2026-05-18T00:28:41Z"},{"alias_kind":"arxiv_version","alias_value":"1710.05938v2","created_at":"2026-05-18T00:28:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.05938","created_at":"2026-05-18T00:28:41Z"},{"alias_kind":"pith_short_12","alias_value":"LETQNHO4VQ4R","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LETQNHO4VQ4RIPHO","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LETQNHO4","created_at":"2026-05-18T12:31:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:LETQNHO4VQ4RIPHOYR7TFVPTI6","target":"record","payload":{"canonical_record":{"source":{"id":"1710.05938","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T18:01:14Z","cross_cats_sorted":[],"title_canon_sha256":"d0dac98e676111de5b7bf71060aaa7b8f3a98628ae88d6968eec1f71aa7be75a","abstract_canon_sha256":"cf3506e0fc40534867a2644348716a525d56a339c5c2aab5ca4370071a50042d"},"schema_version":"1.0"},"canonical_sha256":"5927069ddcac39143ceec47f32d5f3479af0381107740cb9f62aecd2d1a47427","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:28:41.901108Z","signature_b64":"Jglzj5efJ91b5C4FvuLGx/CUUgZn2cb6PVyKQT+JWaeKLw4+Hf8bVfLSXlY99aPCaXXiE3hKMqHuOfuaJd6SBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5927069ddcac39143ceec47f32d5f3479af0381107740cb9f62aecd2d1a47427","last_reissued_at":"2026-05-18T00:28:41.900402Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:28:41.900402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1710.05938","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":"2026-05-18T00:28:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yExSvp9FKW5sfMwB6KraFBA7leF7ItOOKfLBhZy5IM3duXCaGB2bsnCX49RFIWbfUvx4TdyasO6B1io8SmJ1DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T00:37:26.921687Z"},"content_sha256":"849e07979693e75dff03ba583edeef8b1f4fbdcfcab5eace2921988dba3268fd","schema_version":"1.0","event_id":"sha256:849e07979693e75dff03ba583edeef8b1f4fbdcfcab5eace2921988dba3268fd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:LETQNHO4VQ4RIPHOYR7TFVPTI6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constraining the Maximum Mass of Neutron Stars From Multi-Messenger Observations of GW170817","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.HE","authors_text":"Ben Margalit, Brian Metzger","submitted_at":"2017-10-16T18:01:14Z","abstract_excerpt":"We combine electromagnetic (EM) and gravitational wave (GW) information on the binary neutron star (NS) merger GW170817 in order to constrain the radii $R_{\\rm ns}$ and maximum mass $M_{\\rm max}$ of NSs. GW170817 was followed by a range of EM counterparts, including a weak gamma-ray burst (GRB), kilonova (KN) emission from the radioactive decay of the merger ejecta, and X-ray/radio emission consistent with being the synchrotron afterglow of a more powerful off-axis jet. The type of compact remnant produced in the immediate merger aftermath, and its predicted EM signal, depend sensitively on th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.05938","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":""},"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":"2026-05-18T00:28:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yYhXGr1HM/LII3qT4JL5Tn1wC486PjSkfmyPBXpdUkAycxCUOxK/nvHIfl6fkWoqJJMb5ttDB9Ow+ORqXjHVAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T00:37:26.922335Z"},"content_sha256":"61b0d556ac628968a05b17033b655deb684d42d7d1e23f1409c78d82dfedb35f","schema_version":"1.0","event_id":"sha256:61b0d556ac628968a05b17033b655deb684d42d7d1e23f1409c78d82dfedb35f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LETQNHO4VQ4RIPHOYR7TFVPTI6/bundle.json","state_url":"https://pith.science/pith/LETQNHO4VQ4RIPHOYR7TFVPTI6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LETQNHO4VQ4RIPHOYR7TFVPTI6/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":"2026-05-19T00:37:26Z","links":{"resolver":"https://pith.science/pith/LETQNHO4VQ4RIPHOYR7TFVPTI6","bundle":"https://pith.science/pith/LETQNHO4VQ4RIPHOYR7TFVPTI6/bundle.json","state":"https://pith.science/pith/LETQNHO4VQ4RIPHOYR7TFVPTI6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LETQNHO4VQ4RIPHOYR7TFVPTI6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:LETQNHO4VQ4RIPHOYR7TFVPTI6","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":"cf3506e0fc40534867a2644348716a525d56a339c5c2aab5ca4370071a50042d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T18:01:14Z","title_canon_sha256":"d0dac98e676111de5b7bf71060aaa7b8f3a98628ae88d6968eec1f71aa7be75a"},"schema_version":"1.0","source":{"id":"1710.05938","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1710.05938","created_at":"2026-05-18T00:28:41Z"},{"alias_kind":"arxiv_version","alias_value":"1710.05938v2","created_at":"2026-05-18T00:28:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1710.05938","created_at":"2026-05-18T00:28:41Z"},{"alias_kind":"pith_short_12","alias_value":"LETQNHO4VQ4R","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_16","alias_value":"LETQNHO4VQ4RIPHO","created_at":"2026-05-18T12:31:28Z"},{"alias_kind":"pith_short_8","alias_value":"LETQNHO4","created_at":"2026-05-18T12:31:28Z"}],"graph_snapshots":[{"event_id":"sha256:61b0d556ac628968a05b17033b655deb684d42d7d1e23f1409c78d82dfedb35f","target":"graph","created_at":"2026-05-18T00:28:41Z","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":"We combine electromagnetic (EM) and gravitational wave (GW) information on the binary neutron star (NS) merger GW170817 in order to constrain the radii $R_{\\rm ns}$ and maximum mass $M_{\\rm max}$ of NSs. GW170817 was followed by a range of EM counterparts, including a weak gamma-ray burst (GRB), kilonova (KN) emission from the radioactive decay of the merger ejecta, and X-ray/radio emission consistent with being the synchrotron afterglow of a more powerful off-axis jet. The type of compact remnant produced in the immediate merger aftermath, and its predicted EM signal, depend sensitively on th","authors_text":"Ben Margalit, Brian Metzger","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T18:01:14Z","title":"Constraining the Maximum Mass of Neutron Stars From Multi-Messenger Observations of GW170817"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1710.05938","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":"sha256:849e07979693e75dff03ba583edeef8b1f4fbdcfcab5eace2921988dba3268fd","target":"record","created_at":"2026-05-18T00:28:41Z","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":"cf3506e0fc40534867a2644348716a525d56a339c5c2aab5ca4370071a50042d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.HE","submitted_at":"2017-10-16T18:01:14Z","title_canon_sha256":"d0dac98e676111de5b7bf71060aaa7b8f3a98628ae88d6968eec1f71aa7be75a"},"schema_version":"1.0","source":{"id":"1710.05938","kind":"arxiv","version":2}},"canonical_sha256":"5927069ddcac39143ceec47f32d5f3479af0381107740cb9f62aecd2d1a47427","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5927069ddcac39143ceec47f32d5f3479af0381107740cb9f62aecd2d1a47427","first_computed_at":"2026-05-18T00:28:41.900402Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:28:41.900402Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Jglzj5efJ91b5C4FvuLGx/CUUgZn2cb6PVyKQT+JWaeKLw4+Hf8bVfLSXlY99aPCaXXiE3hKMqHuOfuaJd6SBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:28:41.901108Z","signed_message":"canonical_sha256_bytes"},"source_id":"1710.05938","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:849e07979693e75dff03ba583edeef8b1f4fbdcfcab5eace2921988dba3268fd","sha256:61b0d556ac628968a05b17033b655deb684d42d7d1e23f1409c78d82dfedb35f"],"state_sha256":"71cb56c1152f7d045b2cc06644606beeeac6a633548e7a0d3a17075e7906b91c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ks5WHhcsqfFaqxW3Z706we4NJYI1JgVpiqKMNnDYZM+NHUQR2XUCggc+CboKkoH/kkQODP3hz6Mb9DxlDm2MBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T00:37:26.924607Z","bundle_sha256":"87f3922b4a3e6ed297b6ae0c9b6e1b6d063c3dabdb0d17c8366ff958f450b967"}}