Journal ArticleDOI
An efficient method to compute microlensed light curves for point sources
TLDR
In this article, the authors present a method to compute microlensed light curves for point sources, where all microimages contributing to the light curve are found. But this method is not applicable to point masses in the deflector plane.Abstract:
We present a method to compute microlensed light curves for point sources. This method has the general advantage that all microimages contributing to the light curve are found. While a source moves along a straight line, all micro images are located either on the primary image track or on the secondary image tracks (loops). The primary image track extends from - infinity to + infinity and is made of many sequents which are continuously connected. All the secondary image tracks (loops) begin and end on the lensing point masses. The method can be applied to any microlensing situation with point masses in the deflector plane, even for the overcritical case and surface densities close to the critical. Furthermore, we present general rules to evaluate the light curve for a straight track arbitrary placed in the caustic network of a sample of many point masses.read more
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Journal ArticleDOI
Gravitational Microlensing in the Local Group
TL;DR: The status of searches for gravitational microlensing events of the stars in our galaxy and in other galaxies of the Local Group, the interpretation of the results, some theory, and prospects for the future are reviewed in this article.
Journal ArticleDOI
Quasar Microlensing at High Magnification and the Role of Dark Matter: Enhanced Fluctuations and Suppressed Saddle Points
TL;DR: In this paper, the authors show that diluting the stellar component of the lensing galaxy in a highly magnified system with smoothly distributed "dark" matter increases rather than decreases the microlensing fluctuations caused by the remaining stars.
Journal ArticleDOI
Gravitational Microlensing in the Local Group
TL;DR: The status of searches for gravitational microlensing events of the stars in our galaxy and in other galaxies of the Local Group, the interpretation of the results, some theory, and prospects for the future are reviewed in this article.
Journal ArticleDOI
Stokes's Theorem Applied to Microlensing of Finite Sources
TL;DR: In this paper, the computation of the magnification of a finite source by an arbitrary gravitational lens can be reduced from a two-dimensional to a one-dimensional integral using a generalization of Stokes's thereom.
Journal ArticleDOI
Dark Matter under the Microscope: Constraining Compact Dark Matter with Caustic Crossing Events
Jose M. Diego,Nick Kaiser,Tom Broadhurst,Tom Broadhurst,Patrick L. Kelly,Steven A. Rodney,Takahiro Morishita,Masamune Oguri,Timothy W. Ross,Adi Zitrin,Mathilde Jauzac,Mathilde Jauzac,Johan Richard,Liliya L. R. Williams,Jesús Vega-Ferrero,Jesús Vega-Ferrero,Brenda Frye,Alexei V. Filippenko +17 more
TL;DR: In this article, the authors explore different scenarios with microlenses from the intracluster medium and black holes, including primordial ones, and examine strategies to exploit these unique alignments.