Gravitational lenses

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Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992eocm.rept...37r&link_type=abstract

In ESA, Environment Observation and Climate Modelling Through International Space Projects. Space Sciences with Particular Empha

Astronomy and Astrophysics

Astronomy

Gravitational Lenses, Quasars, Spaceborne Astronomy, Deflection, Parallax, Spaceborne Telescopes

Scientific paper

The observed microlensing variability of QSO 2237+0305 has already given important information in the structure of the quasar, the mass of the stars which causes the microlensing, and the transverse motions involved. A discussion on how more precise information can be obtained if observations can also be carried out from a space observatory some astronomical units away from the Earth, since in this case the spatial gradient of the observed flux can be measured, is presented. The inclusion of a telescope (greater than or equal to 20 cm) for such observations in a future space mission is proposed.

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