Astronomy and Astrophysics – Astrophysics – Earth and Planetary Astrophysics
Scientific paper
2009-11-23
Astronomy and Astrophysics
Astrophysics
Earth and Planetary Astrophysics
21 pages, 4 Figures. Accepted for publication in the International Journal of Astrobiology
Scientific paper
It has long been assumed that the planet Jupiter acts as a giant shield, significantly lowering the impact rate of small bodies on the Earth. However, until recently, very little work had been carried out examining the role played by Jupiter in determining the frequency of such collisions. In this work, the third of a series of papers, we examine the degree to which the impact rate on Earth resulting from the Oort cloud comets is enhanced or lessened by the presence of a giant planet in a Jupiter-like orbit, in an attempt to more fully understand the impact regime under which life on Earth has developed. Our results show that the presence of a giant planet in a Jupiter-like orbit significantly alters the impact rate of Oort cloud comets on the Earth, decreasing the rate as the mass of the giant increases. The greatest bombardment flus is observed when no giant planet is present.
Chambers John
Horner Jonathan
Jones Barrie W.
No associations
LandOfFree
Jupiter - friend or foe? III: the Oort cloud comets 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 Jupiter - friend or foe? III: the Oort cloud comets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Jupiter - friend or foe? III: the Oort cloud comets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-173180