Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-08-22
Astrophys.J.608:489-496,2004
Astronomy and Astrophysics
Astrophysics
Submitted to ApJ on July 29th, 2003. 26 pages, 6 figures
Scientific paper
10.1086/386316
This paper examines how type I planet migration is affected by the presence of turbulent density fluctuations in the circumstellar disk. For type I migration, the planet does not clear a gap in the disk and its secular motion is driven by torques generated by the wakes it creates in the surrounding disk fluid. MHD turbulence creates additional density perturbations that gravitationally interact with the planet and can dominate the torques produced by the migration mechanism itself. This paper shows that conventional type I migration can be readily overwhelmed by turbulent perturbations and hence the usual description of type I migration should be modified in locations where the magnetorotational instability is active. In general, the migrating planet does not follow a smooth inward trned, but rather exhibits a random walk through phase space. Our main conclusion is that MHD turbulence will alter the time scales for type I planet migration and -- because of chaos -- requires the time scales to be described by a distribution of values.
Adams Fred
Laughlin Gregory
Steinacker Adriane
No associations
LandOfFree
Type I Planetary Migration with MHD Turbulence 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 Type I Planetary Migration with MHD Turbulence, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Type I Planetary Migration with MHD Turbulence will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-385942