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- W2050147962 abstract "view Abstract Citations (15) References (14) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Observational Prospects for Extragalactic Microlensing Events Colley, Wesley N. Abstract We consider the feasibility of directly observing gravitational microlensing in extragalactic sources, whose stars are not generally resolved. This precludes use of the simple optical depth to microlensing formulation, which is applicable only to resolved stars. We, instead, extend this method to consider observational constraints, such as seeing, sky background and minimum detectable change in magnitude. Our analysis provides quantitative relations between these constraints and the expected observational results, event duration and number of detections per year. We find that an ambitious ground-based observer should detect several tens of events per year in M31. We also consider detection of microlensing in visual binary galaxies. We find that for several candidates, microlensing events may be observable, but will require many observations per hour. Publication: The Astronomical Journal Pub Date: January 1995 DOI: 10.1086/117289 arXiv: arXiv:astro-ph/9404027 Bibcode: 1995AJ....109..440C Keywords: Astronomical Models; Galactic Halos; Gravitational Lenses; Local Group (Astronomy); Andromeda Galaxy; Optical Thickness; Space Observations (From Earth); Astronomy; GRAVITATIONAL LENSING; Astrophysics E-Print: 13 pages, 11 figures, uses AAS LaTeX aaspp.sty macro, PostScript figures available upon request, submitted for publication in the AJ full text sources arXiv | ADS | data products SIMBAD (2) NED (1)" @default.
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- W2050147962 title "Observational prospects for extragalactic microlensing events" @default.
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