Extrasolar Planets

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Gravitational Lensing

4 Oct, 2006 07:20 pm

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A planet can produce a temporary gravitational amplification of the light of background stars. This is due to the peculiar propagation of light in curved space-time.

A worldwide network of dedicated observations are needed to get a good coverage of the whole lensing event (light curve) because these events tends to be short and different observatories at different geographic locations are needed to measure the whole lightcurve. It is a very complimentary detection technique to all other detection techniques because primarily it targets stars that are far away and it allows detecting small planets if the host star is small. The information one gets is convoluted, meaning you get the mass ratio between the host star and the planet orbiting around it. The planet is known in fraction of the mass of its host star. One can gene rally not make any follow up observations on gravitational lensing planets.
Source: Methods to search for extrasolar planets (by Lisa Kaltenegger)

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Key words :

extrasolar planets

gravitational lensing

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1 comment(s)

[1]

Comment by Dr. Edward H. Dowdye, Jr.

31 Jul, 2007 04:12 pm

Dear Lisa Kaltenegger, Fellow Researchers:

Important fundamental principles pertaining to the Mathematical Physics of light rays have been

consistently misapplied to concepts of gravitational light bending or just simply ignored.

Modern Astrophysical observations convincingly show that

there is NO direct interaction between

gravitation & electromagnetism !

Observed emissions from the rapidly moving stars, especially the star known as S2, observed to move on an well defined eliptical path about the galactic center known as Sagittarius A*, appear to contradict General Relativity. Time resolved images of the Keplerian motion of these stars have exhibited to date no evidence of gravitational distortions in the images due to gravitational light bending effects, as predicted by General Relativity. Moreover, the findings clearly show that fundamental principles of Mathematical Physics may have been seriously misapplied to the conventional understanding of gravitational lensing. Details have been published in the highly esteemed and renowned refereed journal, the Astronomische Nachrichten (English title: Astronomical Notes). The title of the article is: "Time resolved images from the center of the Galaxy appear to counter General Relativity", Dowdye, Jr., E.H., Astronomische Nachrichten, Volume 328, Issue 2, Date: February 2007, Pages 186-191. The paper can be accessed on-line at http://www3.interscience.wiley.com/search/allsearch search under author: Dowdye
For an abstract: http://adsabs.harvard.edu/abs/2007AN....328..186D

Important points here are that the fundamental principles of Mathematical Physics have been consistently misapplied to gravitational lensing concepts or just simply ignored. The principles clearly show that a co-linear alignment of the observer, the lens and the source is totally unnecessary for any observation of a light bending effect, as would be predicted by the light bending rule of General Relativity. Details may be found at: http://www.extinctionshift.com/SignificantFindings.htm

Feedback is welcome.

Respectfully yours,

Dr. Edward Henry Dowdye, Jr., Physicist, Laser Optics Engineer, Emission Theorist

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