A computer program to visualize gravitational lenses
نویسندگان
چکیده
منابع مشابه
A Newtonian pre-introduction to gravitational lenses
Understanding the deflection of light by a massive deflector, as well as the associated gravitational lens phenomena, require the use of the theory of General Relativity. I consider here a classical approach, based on Newton’s equation of motion for massive particles. These particles are emitted by a distant source and deflected by the gravitational field of a (opaque) star or of a (transparent...
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The 0, 1 and 2 derivatives of a “Fermat potential” give the three D’s of gravitational lensing: delay, deflection and distortion. Observations of these delays, deflections and distortions for doubly and quadruply imaged quasars give estimates of Hubble’s constant, H0. The single largest contribution to the uncertainty in H0 arises from the difficulty in constraining the degree of central concen...
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ژورنال
عنوان ژورنال: American Journal of Physics
سال: 2001
ISSN: 0002-9505,1943-2909
DOI: 10.1119/1.1290251