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    "title": "Parker Solar Probe observes structured slow solar wind and magnetic reversals",
    "summary": "During its first 2018 solar encounter, Parker Solar Probe measured slow solar wind with rapid, large magnetic-field reversals, velocity enhancements and plasma waves. Bale and colleagues compared the in-situ measurements with coronal field models and extreme-ultraviolet maps, associating the sampled stream with a small equatorial coronal hole. Their measurements reveal a highly structured near-Sun wind and motivate further study of its acceleration and heating.",
    "boundary": "The probe directly measured local fields and plasma; tracing the wind to a coronal hole uses a simplified potential-field and ballistic mapping model and input magnetograms with limited coverage. The event-selection estimate of roughly six percent applies to full polarity reversals in a selected interval and misses smaller deflections. Alfvénic interpretation, reconnection origin and contribution to heating are model-dependent and not uniquely established. Isolated reversals had been reported previously farther from the Sun; this is not a claim that all reversals or solar-wind mechanisms were first discovered here. This early encounter is distinct from the later sub-Alfvénic corona crossing.",
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        "title": "Highly structured slow solar wind emerging from an equatorial coronal hole",
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        "date": "2019-12-04"
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      "scope": "During its first 2018 solar encounter, Parker Solar Probe measured slow solar wind with rapid, large magnetic-field reversals, velocity enhancements and plasma waves. Bale and colleagues compared the in-situ measurements with coronal field models and extreme-ultraviolet maps, associating the sampled stream with a small equatorial coronal hole. Their measurements reveal a highly structured near-Sun wind and motivate further study of its acceleration and heating. The probe directly measured local fields and plasma; tracing the wind to a coronal hole uses a simplified potential-field and ballistic mapping model and input magnetograms with limited coverage. The event-selection estimate of roughly six percent applies to full polarity reversals in a selected interval and misses smaller deflections. Alfvénic interpretation, reconnection origin and contribution to heating are model-dependent and not uniquely established. Isolated reversals had been reported previously farther from the Sun; this is not a claim that all reversals or solar-wind mechanisms were first discovered here. This early encounter is distinct from the later sub-Alfvénic corona crossing.",
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            "citation": "Highly structured slow solar wind emerging from an equatorial coronal hole",
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          "source": {
            "citation": "Highly structured slow solar wind emerging from an equatorial coronal hole",
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      "scope": {
        "description": "The probe directly measured local fields and plasma; tracing the wind to a coronal hole uses a simplified potential-field and ballistic mapping model and input magnetograms with limited coverage. The event-selection estimate of roughly six percent applies to full polarity reversals in a selected interval and misses smaller deflections. Alfvénic interpretation, reconnection origin and contribution to heating are model-dependent and not uniquely established. Isolated reversals had been reported previously farther from the Sun; this is not a claim that all reversals or solar-wind mechanisms were first discovered here. This early encounter is distinct from the later sub-Alfvénic corona crossing.",
        "domain": "Astrophysics"
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          "citation": "Highly structured slow solar wind emerging from an equatorial coronal hole",
          "url": "https://discovery.ucl.ac.uk/10090127/1/Bale_Nature_FIELDS_co-authors.pdf"
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      "statement": "# Parker Solar Probe observes structured slow solar wind and magnetic reversals\n\nDuring its first 2018 solar encounter, Parker Solar Probe measured slow solar wind with rapid, large magnetic-field reversals, velocity enhancements and plasma waves. Bale and colleagues compared the in-situ measurements with coronal field models and extreme-ultraviolet maps, associating the sampled stream with a small equatorial coronal hole. Their measurements reveal a highly structured near-Sun wind and motivate further study of its acceleration and heating.\n\n## Scientific scope\n\nThe probe directly measured local fields and plasma; tracing the wind to a coronal hole uses a simplified potential-field and ballistic mapping model and input magnetograms with limited coverage. The event-selection estimate of roughly six percent applies to full polarity reversals in a selected interval and misses smaller deflections. Alfvénic interpretation, reconnection origin and contribution to heating are model-dependent and not uniquely established. Isolated reversals had been reported previously farther from the Sun; this is not a claim that all reversals or solar-wind mechanisms were first discovered here. This early encounter is distinct from the later sub-Alfvénic corona crossing.\n\n## Reading status\n\nThis is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.\n\n## People and systems\n\nS. D. Bale; S. T. Badman; J. W. Bonnell\n\nThese are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.\n\n\n\n## Original sources\n\n- [Highly structured slow solar wind emerging from an equatorial coronal hole](https://discovery.ucl.ac.uk/10090127/1/Bale_Nature_FIELDS_co-authors.pdf)\n",
      "summary": "During its first 2018 solar encounter, Parker Solar Probe measured slow solar wind with rapid, large magnetic-field reversals, velocity enhancements and plasma waves. Bale and colleagues compared the in-situ measurements with coronal field models and extreme-ultraviolet maps, associating the sampled stream with a small equatorial coronal hole. Their measurements reveal a highly structured near-Sun wind and motivate further study of its acceleration and heating.",
      "title": "Parker Solar Probe observes structured slow solar wind and magnetic reversals"
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    "title": "Parker Solar Probe observes structured slow solar wind and magnetic reversals",
    "context": "Astrophysics",
    "track": "Source-reported experimental result or reusable measurement method",
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    "what_changed": "During its first 2018 solar encounter, Parker Solar Probe measured slow solar wind with rapid, large magnetic-field reversals, velocity enhancements and plasma waves. Bale and colleagues compared the in-situ measurements with coronal field models and extreme-ultraviolet maps, associating the sampled stream with a small equatorial coronal hole. Their measurements reveal a highly structured near-Sun wind and motivate further study of its acceleration and heating.",
    "scope": "During its first 2018 solar encounter, Parker Solar Probe measured slow solar wind with rapid, large magnetic-field reversals, velocity enhancements and plasma waves. Bale and colleagues compared the in-situ measurements with coronal field models and extreme-ultraviolet maps, associating the sampled stream with a small equatorial coronal hole. Their measurements reveal a highly structured near-Sun wind and motivate further study of its acceleration and heating. The probe directly measured local fields and plasma; tracing the wind to a coronal hole uses a simplified potential-field and ballistic mapping model and input magnetograms with limited coverage. The event-selection estimate of roughly six percent applies to full polarity reversals in a selected interval and misses smaller deflections. Alfvénic interpretation, reconnection origin and contribution to heating are model-dependent and not uniquely established. Isolated reversals had been reported previously farther from the Sun; this is not a claim that all reversals or solar-wind mechanisms were first discovered here. This early encounter is distinct from the later sub-Alfvénic corona crossing.",
    "evidence_summary": "The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The probe directly measured local fields and plasma; tracing the wind to a coronal hole uses a simplified potential-field and ballistic mapping model and input magnetograms with limited coverage. The event-selection estimate of roughly six percent applies to full polarity reversals in a selected interval and misses smaller deflections. Alfvénic interpretation, reconnection origin and contribution to heating are model-dependent and not uniquely established. Isolated reversals had been reported previously farther from the Sun; this is not a claim that all reversals or solar-wind mechanisms were first discovered here. This early encounter is distinct from the later sub-Alfvénic corona crossing.",
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        "title": "Highly structured slow solar wind emerging from an equatorial coronal hole",
        "url": "https://discovery.ucl.ac.uk/10090127/1/Bale_Nature_FIELDS_co-authors.pdf",
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