Improper motions in lensed QSOs

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

We argue that individual images in multiple-image QSOs could easily have substructure at the level of 0.1″ (i.e., unresolvable even with HST); microlensing within such substructure would cause centroid shifts, observable even from the ground as pseudo proper motions. We present a model of the four-image system 2237+0305 in which Image B shows such "improper motions" of order of 0.01″ over a few years.

Original languageEnglish (US)
Pages (from-to)1471-1475
Number of pages5
JournalAstronomical Journal
Volume110
Issue number4
DOIs
StatePublished - Oct 1995
Externally publishedYes

Fingerprint Dive into the research topics of 'Improper motions in lensed QSOs'. Together they form a unique fingerprint.

Cite this