A parallax effect due to gravitational micro-lensing

Details A parallax effect due to gravitational micro-lensing A parallax effect due to gravitational micro-lensing

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986natur.324..126g&link_type=abstract

Nature (ISSN 0028-0836), vol. 324, Nov. 13, 1986, p. 126, 127.

Computer Science

32

Gravitational Lenses, Parallax, Quasars, Space Observations (From Earth), Light Curve

Scientific paper

A parallax effect due to gravitational microlensing is discussed, showing that such an effect would most favorably be observed during high amplification events when a compact source (a quasar) crossed a critical curve. During such an event even a relatively small displacement of the observer may lead to measurable differences in the image brightness. This parallax effect is discussed with special emphasis on the determination of the size of the quasar and the relative transversal velocities involved. It should be possible to observe such a parallax effect with a relatively small telescope included in an interplanetary mission. In extreme cases, annual oscillations in the light curves of lensed quasars can be observed from earth, but in most cases these oscillations can be neglected.

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