The motion of chondrules and other particles in a protoplanetary disc with temperature fluctuations
arXiv:1609.02096 · doi:10.1093/mnras/stw2279
Abstract
We consider the mechanism of photophoretic transport in protoplanetary disks that are optically thick to radiation. Here, photophoresis is not caused by the central star but by temperature fluctuations that subject suspended solid particles, including chondrules, to non-isotropic thermal radiation within the disk. These short-lived temperature fluctuations can explain time-of-flight size sorting and general number density enhancements. The same mechanism will also lead to velocity fluctuations of dust aggregates beyond for mm-sized particles in protoplanetary disks. Applying this in future research will change our understanding of the early phases of collisional dust evolution and aggregate growth as particles cross the bouncing barrier and as mass transfer rates are altered.
References in corpus (11)
- Towards planetesimals: dense chondrule clumps in the protoplanetary nebula
- Mineral Processing by Short Circuits in Protoplanetary Disks
- The photophoretic sweeping of dust in transient protoplanetary disks
- Modeling dust growth in protoplanetary disks: The breakthrough case
- Experiments on the Photophoretic Motion of Chondrules and Dust Aggregates - Indications for the Transport of Matter in Protoplanetary Disks
- Forming chondrules in impact splashes. I. Radiative cooling model
- Temperature Fluctuations driven by Magnetorotational Instability in Protoplanetary Disks
- Effects of photophoresis on the evolution of transitional circumstellar disks
- Photophoresis on particles hotter/colder than the ambient gas for the entire range of pressures
- Chondrule destruction in nebular shocks
- Semarkona: Lessons for chondrule and chondrite formation