Optical behavior of cosmic dust particles with volatile icy coating

Astronomy and Astrophysics – Astronomy

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

1

Composite Dust Particles, Polarization And Scattering Features, Gaussian Core, Ice Coating

Scientific paper

The scattering properties of composite evaporating interplanetary dust particles are analyzed. A two-component particle (usually supplying e.g. cometary dust) is considered in the form of a solid inclusion surrounded by a volatile ice shell. The processes of evaporation lead to a continuous decrease of the particle size because of ice loss, implying evolution of the optical properties of such particle. If a realistic model of the Gaussian core with ice coating is replaced by a volume equivalent homogeneous sphere, the numerical simulations become much easier and straightforward. But, the accuracy of calculation results is questionable because of hard limitations originated from Mie theory (which is strictly applicable to homogeneous spherical targets). Our results show that the Gaussian particle is a less efficient scatterer compared with the volume equivalent homogeneous sphere, especially when the particle's size is close to or larger than the wavelength of an incident radiation. The polarization features of the Gaussian particle differ from those of a homogeneous sphere. This can be an important fact in distiguishing between these two particle models. Substitution of realistically shaped and composite particles by idealized homogeneous spheres may definitely lead to a misinterpretation of measured optical data as well as to retrieval of incorrect microphysical characteristics of dust particles.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

Optical behavior of cosmic dust particles with volatile icy coating does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optical behavior of cosmic dust particles with volatile icy coating, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical behavior of cosmic dust particles with volatile icy coating will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-1246352

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.