Results 71 to 78 of about 107 (78)

Complete Parallax and Proper‐Motion Solutions for Halo Binary‐Lens Microlensing Events [PDF]

Astrophysical Journal, 1999
A major problem in the interpretation of microlensing events is that the only measured quantity, the Einstein time scale t_E, is a degenerate combination of the three quantities one would like to know, the mass, distance, and speed of the lens. This degeneracy can be partly broken by measuring either a "parallax" or a "proper motion" and completely ...
Gould, Andrew, Andronov, Nikolay
exaly   +4 more sources

Rapid analysis of binary lens gravitational microlensing light curves [PDF]

Monthly Notices of the Royal Astronomical Society, 2003
A new algorithm for the autonomous fitting of light curves of gravitational microlensing by binary lenses is presented here. The algorithm relies on the combination of artificial neural networks with a conventional amoeba (downhill simplex) method to achieve a success rate of 68 per cent using strict success criteria, in an average fitting time of 48 s
exaly   +2 more sources

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Ambiguities in fits of observed binary lens galactic microlensing events

Astronomy & Astrophysics, 1999
For observed galactic microlensing events only one fit is usually presented, though, especially for a binary lens, several fits may be possible. This has been shown for the MACHO LMC#1 event (Dominik & Hirshfeld 1996). Here I discuss the strong binary lens events OGLE#7 and DUO#2.
openaire   +1 more source

Fitting binary lens gravitational microlensing events with example-based algorithms

2007
Fitting binary lens models to gravitational microlensing event is currently a time consuming and labour-intensive process. Example-based algorithms more commonly used in the field of data mining were applied to simulatded and observed light curves in order to facilitate the fitting of a simple-seven-parameter binary lens model with minimal human ...
openaire   +1 more source

Modeling microlensing events with MulensModel

Astronomy and Computing, 2019
Radoslaw Poleski
exaly  

BINARY MICROLENSING EVENT OGLE-2009-BLG-020 GIVES VERIFIABLE MASS, DISTANCE, AND ORBIT PREDICTIONS

Astrophysical Journal, 2011
Nicholas Rattenbury, Rachel Street, Noe Kains   +2 more
exaly  

Effects of gravitational microlensing of binary and multiple stars

Astrophysics and Space Science, 1995
Sazhin M V, Cherepashchuk A M, M V Sazhin   +2 more
exaly  

PLANETARY AND OTHER SHORT BINARY MICROLENSING EVENTS FROM THE MOA SHORT-EVENT ANALYSIS

Astrophysical Journal, 2012
Nicholas Rattenbury, Akihiko Fukui, Daisuke Suzuki   +2 more
exaly