Size of Local Cold Clouds Governing Crossing Duration

Constraining LRCC cloud sizes and Sun-cloud crossing durations

Cloud Size Distribution

Mean Size0.777 pc
Median Size0.315 pc
Log-normal mu-0.501
Log-normal sigma0.595
25th Percentile0.132 pc
75th Percentile0.759 pc

Crossing Duration

Mean Duration25.99 kyr
Median Duration8.72 kyr
Std Dev55.68 kyr
MC 95% CI[0.42, 169.48] kyr
Fraction <10 kyr53.6%
Fraction >100 kyr5.3%

LxCC Encounter (2.5 Ma)

Est. Duration30.0 kyr
Crossing Size0.798 pc
Implied Size1.384 pc
Size 95% CI[0.259, 4.228] pc

Morphology Distribution

Duration by Percentile

Model Comparison

ModelMean Size (pc)Mean Duration (kyr)
Log-normal0.77725.99
Power Law0.0200.46
Truncated Pareto0.0230.54