Interferometric visibility and closure phase of microlensing events with finite source size
نویسندگان
چکیده
منابع مشابه
Interferometric Visibility and Closure Phase of Microlensing Events with Finite Source Size
Interferometers from the ground and space will be able to resolve the two images in a microlensing event. This will at least partially lift the inherent degeneracy between physical parameters in microlensing events. To increase the signal-to-noise ratio, intrinsically bright events with large magnifications will be preferentially selected as targets. These events may be influenced by finite sou...
متن کاملFinite Source Effects in Microlensing Events
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 Stoke’s theorem. For a large source lensed by a planetarysystem whose planet lies at the position where one of the two images would be in the absence of a planet, the integral can be done analytically. If the pla...
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The Interferometric Traveltime Tomography (ITT) method was previously shown to be both effective and stable in eliminating either shotor receiver-static errors using synthetic and field data example. In this report, we apply the ”closure phase” theorem to traveltime tomography and test its effectiveness in eliminating both the shotand receiver-static errors simultaneously with synthetic crosswe...
متن کاملConstraining the Location of Microlensing Objects by using the Finite Source Effect in EAGLE events
We propose a new method to constrain the location of microlensing objects using EAGLE (Extremely Amplified Gravitational LEnsing) events. We have estimated the rate of EAGLE events by taking the finite-source effect into account. We found that the EAGLE event rate for using a 1-m class telescope whose limiting magnitude is V ∼ 21 is the same as or higher than that of the ordinary microlensing e...
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We obtain the absolute phase in Fresnel diffraction for Gaussian beams by using a modified polarization Sagnac interferometer in which counterpropagating paths are spatially separated and labeled according to polarization. By erasing the polarization "which-path" information with an analyzing polarizer situated after the modified interferometer, we are able to regain interference and to precise...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society
سال: 2006
ISSN: 0035-8711,1365-2966
DOI: 10.1111/j.1365-2966.2005.09769.x