Comet ejection and dynamics of nonspherical dust particles and meteoroids

Details Comet ejection and dynamics of nonspherical dust particles and meteoroids Comet ejection and dynamics of nonspherical dust particles and meteoroids

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...337..945g&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 337, Feb. 15, 1989, p. 945-949.

Astronomy and Astrophysics

Astrophysics

47

Comets, Cosmic Dust, Ejecta, Meteoroids, Brightness Distribution, Comet Tails, Gravitational Fields, Optical Thickness, Polarization (Spin Alignment), Radiation Distribution, Comets, Ejection, Dynamics, Dust, Particles, Meteoroids, Velocity, Shape, Calculations, Spherules, Radiation, Gravity Effects

Scientific paper

This paper generalizes the formalism for calculating the ejection velocity of meteoroids and dust from comets and the forces to which such objects are subject in interplanetary space, including the dust tail of comets. It is found that spheres have the smallest cross section of any geometrical figures of the same valume averaged over random orientations, so for a fixed volume and mass, both the ejection velocity and beta reaches a minimum for bodies of spherical shapes. Flakes in random orientation are ejected near 70 percent of the highest ejection velocity for any orientation. Needles in random orientation escape a comet at nearly 90 percent of their maximum velocities. Randomly oriented cylinders of finite thickness escape at lower velocities that are slightly closer to their maximum velocities. The average beta acting on spin-aligned, perfectly absorbing needles is more than half that acting on a sphere of the same material and radius.

Affiliated with

Also associated with

No associations

Rating

Comet ejection and dynamics of nonspherical dust particles and meteoroids 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 Comet ejection and dynamics of nonspherical dust particles and meteoroids, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Comet ejection and dynamics of nonspherical dust particles and meteoroids will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1884352