HAL will be down for maintenance from Friday, June 10 at 4pm through Monday, June 13 at 9am. More information
Skip to Main content Skip to Navigation
Journal articles

A bimodal distribution of haze in Pluto’s atmosphere

Abstract : Pluto, Titan, and Triton make up a unique class of solar system bodies, with icy surfaces and chemically reducing atmospheres rich in organic photochemistry and haze formation. Hazes play important roles in these atmospheres, with physical and chemical processes highly dependent on particle sizes, but the haze size distribution in reducing atmospheres is currently poorly understood. Here we report observational evidence that Pluto's haze particles are bimodally distributed, which successfully reproduces the full phase scattering observations from New Horizons. Combined with previous simulations of Titan's haze, this result suggests that haze particles in reducing atmospheres undergo rapid shape change near pressure levels~0.5 Pa and favors a photochemical rather than a dynamical origin for the formation of Titan's detached haze. It also demonstrates that both oxidizing and reducing atmospheres can produce multi-modal hazes, and encourages reanalysis of observations of hazes on Titan and Triton.
Document type :
Journal articles
Complete list of metadata

https://hal.sorbonne-universite.fr/hal-03525777
Contributor : Hal Sorbonne Université 5 Gestionnaire Connect in order to contact the contributor
Submitted on : Friday, January 14, 2022 - 9:36:47 AM
Last modification on : Thursday, April 7, 2022 - 1:58:27 PM
Long-term archiving on: : Friday, April 15, 2022 - 6:22:53 PM

File

s41467-021-27811-6.pdf
Publication funded by an institution

Identifiers

Citation

Siteng Fan, Peter Gao, Xi Zhang, Danica Adams, Nicholas Kutsop, et al.. A bimodal distribution of haze in Pluto’s atmosphere. Nature Communications, Nature Publishing Group, 2022, 13 (1), pp.240. ⟨10.1038/s41467-021-27811-6⟩. ⟨hal-03525777⟩

Share

Metrics

Record views

28

Files downloads

13