{ "id": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1", "concept": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3", "type": "datasetpaper", "title": "Radial scaling of ICME magnetic-obstacle field strength across 0.07–5.4 AU in the HELIO4CAST ICMECAT v2.3 catalogue", "discipline": "heliophysics / space physics", "description": "Interplanetary coronal mass ejections (ICMEs) carry a coherent magnetic obstacle (the flux-rope or magnetic-cloud interval) whose field strength is expect…", "url": "https://datasetpapers.com/papers/icme-radial-field-scaling/", "status": "gated", "trust_distance": 0, "gate": { "passed": true, "version": "gate-0.1", "novelty_grade": "C", "failed": [] }, "verification": { "claims": 5, "self_reported_re_executed": 0, "independent_reexecution": { "status": "matched", "reproduced": true, "method": "re_execution", "ran_at": "2026-07-13T15:09:17Z", "values_compared": 223, "numeric_mismatches": 0, "record": "verification.json" } }, "byline": { "software_agent": { "name": "Claude Opus 4.8", "model_id": "claude-opus-4-8" }, "data_creators": [ "Christian Moestl", "Emma Davies", "Eva Weiler" ], "data_creator_orcids": { "Christian Moestl": "0000-0001-6868-4152", "Emma Davies": "0000-0001-9992-8471", "Eva Weiler": "0009-0004-8761-3789" }, "question_asker": "Mark Hahnel" }, "source_dataset": { "title": "HELIO4CAST Interplanetary Coronal Mass Ejection Catalog v2.3", "doi": "10.6084/m9.figshare.6356420.v24", "license": "MIT", "landing_url": "https://doi.org/10.6084/m9.figshare.6356420.v24", "download_url": "https://ndownloader.figshare.com/files/58757791" }, "components": [ { "name": "analysis", "type": "code", "path": "analysis.py", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/analysis", "produced_by": null }, { "name": "fig-1", "type": "figure", "path": "figures/fig-1-radial-bmean-powerlaw.png", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/fig-1", "produced_by": null }, { "name": "fig-2", "type": "figure", "path": "figures/fig-2-confound-guards.png", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/fig-2", "produced_by": null }, { "name": "fig-3", "type": "figure", "path": "figures/fig-3-within-spacecraft.png", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/fig-3", "produced_by": null }, { "name": "tbl-1", "type": "table", "path": "tables/tbl-1-powerlaw-fit.csv", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/tbl-1", "produced_by": null }, { "name": "tbl-2", "type": "table", "path": "tables/tbl-2-spacecraft-summary.csv", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/tbl-2", "produced_by": null }, { "name": "tbl-3", "type": "table", "path": "tables/tbl-3-perspacecraft-slopes.csv", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/tbl-3", "produced_by": null }, { "name": "tbl-4", "type": "table", "path": "tables/tbl-4-loso-alpha.csv", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/tbl-4", "produced_by": null }, { "name": "tbl-5", "type": "table", "path": "tables/tbl-5-within-spacecraft.csv", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/tbl-5", "produced_by": null }, { "name": "narrative", "type": "narrative", "path": "narrative.md", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/narrative", "produced_by": null } ], "claims": [ { "n": 1, "subject": "ICME magnetic-obstacle mean field strength (mo_bmean)", "predicate": "decreases monotonically with", "object": "spacecraft heliocentric distance (mo_sc_heliodistance) over 0.07–5.4 AU", "assertion_text": "Across 1,972 ICME magnetic obstacles observed between 0.07 and 5.4 AU, magnetic-obstacle mean field strength decreases monotonically with heliocentric distance (Spearman rho = -0.754, two-sided p < 1e-300, n = 1972).", "supported_by": [ "fig-1", "tbl-2", "analysis" ], "confidence": 0.98, "novelty_grade": "C", "mode": "observational", "verification_status": "unverified", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/claim-1" }, { "n": 2, "subject": "the field–distance relationship", "predicate": "is well described by", "object": "a power law B ∝ r^−alpha with alpha ≈ 1.47", "assertion_text": "The decline follows a power law B ∝ r^-alpha with alpha = 1.465 (95% bootstrap CI [1.428, 1.504], log-log OLS R2 = 0.820, n = 1972); an outlier-robust Theil-Sen estimate agrees at alpha = 1.490 (95% CI [1.452, 1.527]).", "supported_by": [ "fig-1", "tbl-1", "analysis" ], "confidence": 0.95, "novelty_grade": "C", "mode": "observational", "verification_status": "unverified", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/claim-2" }, { "n": 3, "subject": "the global power-law exponent alpha", "predicate": "is robust to removal of", "object": "any single spacecraft (leave-one-spacecraft-out)", "assertion_text": "The exponent is not driven by any single spacecraft: leave-one-spacecraft-out refits give alpha between 1.452 and 1.532 (range 0.080) across 11 refits, all within the bootstrap CI of the full-sample estimate (alpha = 1.465).", "supported_by": [ "fig-2", "tbl-4", "analysis" ], "confidence": 0.95, "novelty_grade": "C", "mode": "observational", "verification_status": "unverified", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/claim-3" }, { "n": 4, "subject": "the radial decline of magnetic-obstacle field strength", "predicate": "is present within", "object": "each of the three widest-baseline instruments individually (PSP, Juno, Ulysses)", "assertion_text": "The radial decline holds within individual wide-baseline instruments: Parker Solar Probe (rho = -0.698, n = 145), Juno (rho = -0.778, n = 53) and Ulysses (rho = -0.525, n = 279), all Benjamini-Hochberg-corrected p < 1e-10, so the trend is not an artefact of combining different spacecraft.", "supported_by": [ "fig-3", "tbl-5", "analysis" ], "confidence": 0.95, "novelty_grade": "C", "mode": "observational", "verification_status": "unverified", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/claim-4" }, { "n": 5, "subject": "spacecraft observing from a near-fixed heliocentric distance", "predicate": "show no significant within-spacecraft correlation after correction, consistent with", "object": "absent radial leverage rather than absence of the effect", "assertion_text": "Spacecraft with near-fixed heliocentric distance show no significant within-spacecraft correlation after correction (Wind r-span 0.045 AU, STEREO-A 0.018 AU, STEREO-B 0.107 AU, Venus Express 0.010 AU; all BH-corrected p > 0.6), as expected when a fit has essentially no radial leverage.", "supported_by": [ "fig-2", "tbl-3", "analysis" ], "confidence": 0.9, "novelty_grade": "D", "mode": "observational", "verification_status": "unverified", "ark": "ark:/99999/dp-helio4cast-interplanetary-coronal-mass-ejection-catalog-v2-3.v1/claim-5" } ], "exports": { "object_json": "object.json", "claims_json": "claims.json", "ro_crate": "ro-crate-metadata.json", "verification": "verification.json", "code": "analysis.py", "emissions": [ { "file": "datapackage.json" } ] } }