a new perspective on the birth and evolution of solar systems

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Presentation Description

This is Chapter 3 of my D.Sc. Thesis.


Presentation Transcript

Slide 1: 

Non-Keplerian analysis of Earth-Moon System is uploaded at: http://arxiv.org/abs/0805.0100 Keplerian Approximate Analysis of the same was given earlier. The present talk is titled: “A New Perspective on the Birth and Evolution of our Solar System based on Planetary Satellite Dynamics”

Slide 2: 

Spiral Trajectory of Moon traversed from the birth To the present Orbit of 3.844^8m over 4.53Gy of time Period.

Slide 4: 

Fig.(2) Radial Velocity Profile with respect to Lunar Orbital Radius a. The profile crosses the x-axis at aG1 and aG2. The radial velocity is positive in the range between aG1 and aG2 peaking at a2, the point where radial acceleration is zero and sling-shot phase is terminated. Beyond aG2, radial velocity is negative meaning by it is deflected on an inward spiral path. Within aG1also radial velocity is negative meaning by it is set on an collapsing spiral path to its certain doom.

Slide 5: 

Earlier than 4.56Gy ago, a SUPERNOVA EXPLOSION occurred.This generated shock wave and a load of debris containing elements heavier than Iron.

Slide 6: 

The Shock Wave and load of debris so generated , traveling outward , met a Giant Cloud of gas and dust. This meeting threw the Giant Cloud into a rapid spin mode.

Slide 7: 

The rotating cloud of gas and dust, enriched by the load of debris ejected by the Super-Nova explosion, gave birth to the DISC OF ACCRETION. This happened earlier than 4.56Gy ago.

Slide 8: 

By 4.56Gy B.P. the central part of the Solar Nebula collapsed into Sun. Up this point every thing is following the classical picture as known till now.

Slide 9: 

At 4.55788Gy B.P. at a distance of 3.8×10^9m Jupiter , the heaviest Planet of our Solar System is born. The orbital radius of 3.8×10^9m happens to be the inner Geo-Synchronous which is highly unstable equilibrium. Slightest cosmic perturbation causes the Planet to be gravitationally launched on an inward or Outward spiral orbit. In our Solar System, the planets have been sequentially born and all of them have been launched on an outward expanding spiral orbit towards towards outer Geo-Synchronous Orbit.

Slide 10: 

After a gap of approx.1 million years at 4.55705Gy B.P. Saturn is born, beyond the birth place of Jupiter ,at an orbital radius of 6.5×10^9m. It is similarly perturbed out of the inner Geo-Synchronous Orbit and launched on an outward expanding spiral orbit.

Slide 11: 

After a gap of another 1 million yrs, Neptune is born at twice the distance at which Saturn is born i.e. at 12×10^9m and similarly experiences the sling-shot effect.The birth date is 4.5559Gy B.P.

Slide 12: 

The lightest of the Jovian Planet namely Uranus is born the last among the giant gas planets at an orbital radius beyond that at which Neptune is born. The birth place is an orbital radius of 14×10^9m. Birth date is 4.5548Gy B.P.

Slide 13: 

There is a lull in planetary formation process of 25 million years from 4.5548Gy B.P.to 4.53Gy B.P. In this period the composition of Solar Nebula quantitatively changes from very fine suspension of silicate particles to solar nebula rich with particulates and gravels. This laid the necessary conditions for the birth of Terrestrial Planets which are rocky and of heavier density except for Pluto which is captured body and which has not been born out of natural planetary formation process.

Slide 14: 

Earth is born at 4.53Gy B.P.; Venus at 4.523Gy B.P.; Mars at 4.515Gy B.P.; Mercury at 4.514Gy B.P. and much later at 1.27Gy B.P. Pluto was captured as a wandering astreroid. Their birth orbits are placed in the same sequence. Meanwhile Jovian Planets have evolved to the correct configuration.

Slide 15: 

The Jovian Planets had acquired the correct configuration much earlier because of their short Evolution Time Constants. By the present epoch the Terrestrial Planets also evolved to the correct configuration.

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