{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:HA5JSYISFQNCEYMTUSAP7HF742","short_pith_number":"pith:HA5JSYIS","canonical_record":{"source":{"id":"0707.2698","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-18T11:10:10Z","cross_cats_sorted":[],"title_canon_sha256":"9bf84a5e0e250fa65ffeff746af0df3aed6503527f9ba074c5c7fe02e9d2e496","abstract_canon_sha256":"d2113c25dce20a34038bb52a42c63252b4d3c4234f6ad1d5e34a150dc4edb833"},"schema_version":"1.0"},"canonical_sha256":"383a9961122c1a226193a480ff9cbfe6ad0bae86ecc1db27e4985377036f0b05","source":{"kind":"arxiv","id":"0707.2698","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.2698","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"arxiv_version","alias_value":"0707.2698v1","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.2698","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"pith_short_12","alias_value":"HA5JSYISFQNC","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"pith_short_16","alias_value":"HA5JSYISFQNCEYMT","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"pith_short_8","alias_value":"HA5JSYIS","created_at":"2026-07-04T17:04:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:HA5JSYISFQNCEYMTUSAP7HF742","target":"record","payload":{"canonical_record":{"source":{"id":"0707.2698","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-18T11:10:10Z","cross_cats_sorted":[],"title_canon_sha256":"9bf84a5e0e250fa65ffeff746af0df3aed6503527f9ba074c5c7fe02e9d2e496","abstract_canon_sha256":"d2113c25dce20a34038bb52a42c63252b4d3c4234f6ad1d5e34a150dc4edb833"},"schema_version":"1.0"},"canonical_sha256":"383a9961122c1a226193a480ff9cbfe6ad0bae86ecc1db27e4985377036f0b05","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T17:04:44.453038Z","signature_b64":"vPIPsPiVuyIy+720PQ1bNFSYfD4XZctT7UHrEoIu9mlP/4FoQPzJnS/FXfT5j2oi3lsR0ZLNzqVEx1FbfFQICw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"383a9961122c1a226193a480ff9cbfe6ad0bae86ecc1db27e4985377036f0b05","last_reissued_at":"2026-07-04T17:04:44.452635Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T17:04:44.452635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0707.2698","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":"2026-07-04T17:04:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OHep9Zg9bm0K+9b0jP8nbHmSFVcEo+/KS1fLZqy0/5pkZuRVaJmYkY7NvOgE1WNub6t7Qz/Wthj8wLaEcxFXCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T17:33:07.557979Z"},"content_sha256":"982177b7cd25f9c907a82d99510f0deabd5777a71d75586564eddd817c4f4337","schema_version":"1.0","event_id":"sha256:982177b7cd25f9c907a82d99510f0deabd5777a71d75586564eddd817c4f4337"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:HA5JSYISFQNCEYMTUSAP7HF742","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ram pressure stripping of disc galaxies orbiting in clusters. I. Mass and radius of the remaining gas disc","license":"","headline":"","cross_cats":[],"primary_cat":"astro-ph","authors_text":"E. Roediger, M. Brueggen (Jacobs University Bremen)","submitted_at":"2007-07-18T11:10:10Z","abstract_excerpt":"We present the first 3D hydrodynamical simulations of ram pressure stripping of a disc galaxy orbiting in a galaxy cluster. Along the orbit, the ram pressure that this galaxy experiences varies with time. In this paper, we focus on the evolution of the radius and mass of the remaining gas disc and compare it with the classical analytical estimate proposed by Gunn & Gott 1972. We find that this simple estimate works well in predicting the evolution of the radius of the remaining gas disc. Only if the ram pressure increases faster than the stripping timescale, the disc radius remains larger than"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.2698","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/0707.2698/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":"2026-07-04T17:04:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NP8P7gR9m2Mc7Znyn2HUyMU+4+FG21A79B2wT/WGdVyiy+vi3GN1fw/DNs/1ND5cb0xiXq2ayLWMdm28OVHfAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T17:33:07.558492Z"},"content_sha256":"00dd38ba1021ecc6ff1b498f69d6c907d209af957f82692ef530b8778f70a87c","schema_version":"1.0","event_id":"sha256:00dd38ba1021ecc6ff1b498f69d6c907d209af957f82692ef530b8778f70a87c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/HA5JSYISFQNCEYMTUSAP7HF742/bundle.json","state_url":"https://pith.science/pith/HA5JSYISFQNCEYMTUSAP7HF742/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/HA5JSYISFQNCEYMTUSAP7HF742/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":"2026-08-07T17:33:07Z","links":{"resolver":"https://pith.science/pith/HA5JSYISFQNCEYMTUSAP7HF742","bundle":"https://pith.science/pith/HA5JSYISFQNCEYMTUSAP7HF742/bundle.json","state":"https://pith.science/pith/HA5JSYISFQNCEYMTUSAP7HF742/state.json","well_known_bundle":"https://pith.science/.well-known/pith/HA5JSYISFQNCEYMTUSAP7HF742/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:HA5JSYISFQNCEYMTUSAP7HF742","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":"d2113c25dce20a34038bb52a42c63252b4d3c4234f6ad1d5e34a150dc4edb833","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-18T11:10:10Z","title_canon_sha256":"9bf84a5e0e250fa65ffeff746af0df3aed6503527f9ba074c5c7fe02e9d2e496"},"schema_version":"1.0","source":{"id":"0707.2698","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0707.2698","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"arxiv_version","alias_value":"0707.2698v1","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0707.2698","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"pith_short_12","alias_value":"HA5JSYISFQNC","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"pith_short_16","alias_value":"HA5JSYISFQNCEYMT","created_at":"2026-07-04T17:04:44Z"},{"alias_kind":"pith_short_8","alias_value":"HA5JSYIS","created_at":"2026-07-04T17:04:44Z"}],"graph_snapshots":[{"event_id":"sha256:00dd38ba1021ecc6ff1b498f69d6c907d209af957f82692ef530b8778f70a87c","target":"graph","created_at":"2026-07-04T17:04:44Z","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/0707.2698/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the first 3D hydrodynamical simulations of ram pressure stripping of a disc galaxy orbiting in a galaxy cluster. Along the orbit, the ram pressure that this galaxy experiences varies with time. In this paper, we focus on the evolution of the radius and mass of the remaining gas disc and compare it with the classical analytical estimate proposed by Gunn & Gott 1972. We find that this simple estimate works well in predicting the evolution of the radius of the remaining gas disc. Only if the ram pressure increases faster than the stripping timescale, the disc radius remains larger than","authors_text":"E. Roediger, M. Brueggen (Jacobs University Bremen)","cross_cats":[],"headline":"","license":"","primary_cat":"astro-ph","submitted_at":"2007-07-18T11:10:10Z","title":"Ram pressure stripping of disc galaxies orbiting in clusters. I. Mass and radius of the remaining gas disc"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0707.2698","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":"sha256:982177b7cd25f9c907a82d99510f0deabd5777a71d75586564eddd817c4f4337","target":"record","created_at":"2026-07-04T17:04:44Z","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":"d2113c25dce20a34038bb52a42c63252b4d3c4234f6ad1d5e34a150dc4edb833","cross_cats_sorted":[],"license":"","primary_cat":"astro-ph","submitted_at":"2007-07-18T11:10:10Z","title_canon_sha256":"9bf84a5e0e250fa65ffeff746af0df3aed6503527f9ba074c5c7fe02e9d2e496"},"schema_version":"1.0","source":{"id":"0707.2698","kind":"arxiv","version":1}},"canonical_sha256":"383a9961122c1a226193a480ff9cbfe6ad0bae86ecc1db27e4985377036f0b05","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"383a9961122c1a226193a480ff9cbfe6ad0bae86ecc1db27e4985377036f0b05","first_computed_at":"2026-07-04T17:04:44.452635Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T17:04:44.452635Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vPIPsPiVuyIy+720PQ1bNFSYfD4XZctT7UHrEoIu9mlP/4FoQPzJnS/FXfT5j2oi3lsR0ZLNzqVEx1FbfFQICw==","signature_status":"signed_v1","signed_at":"2026-07-04T17:04:44.453038Z","signed_message":"canonical_sha256_bytes"},"source_id":"0707.2698","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:982177b7cd25f9c907a82d99510f0deabd5777a71d75586564eddd817c4f4337","sha256:00dd38ba1021ecc6ff1b498f69d6c907d209af957f82692ef530b8778f70a87c"],"state_sha256":"3de8414349d131a466c41d2974376f7c30ec0f9803b82a4d96828241a567da3e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NpQbHllIzjxETV/EQodKTJq8Z4ZappUmGSalMjrGeCH6rnyTy4SXPdbn7FSA0+qTbkj5a7HKCVoRJzlng5TvCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T17:33:07.562847Z","bundle_sha256":"cd4c12565e76223b08da8934862b145d62e1f84bb7c8f4697c95510d8cfd957b"}}