Gravitational microlensing & space-borne astronomy

Details Gravitational microlensing & space-borne astronomy Gravitational microlensing & space-borne astronomy

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998newar..42...89l&link_type=abstract

New Astronomy Reviews, Volume 42, Issue 2, p. 89-92.

Astronomy and Astrophysics

Astronomy

Scientific paper

Gravitational microlensing by stars in external galaxies can introduce fluctuations into the light curves of macrolensed quasars. Here we discuss another aspect of this microlensing; a time-dependent shift in the centroid of the composite macroimage. We show that the degree of such shifts is extremely small, of order 10-100 mu'', well below the detection limits of current optical observations. Measurements of such shifts are, however, within the capabilities of the forthcoming Space Interferometry Mission.

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