GRAVITATIONAL MICROLENSING AND EXTENDED SOURCE MODELS
Journal Title: Odessa Astronomical Publications - Year 2014, Vol 27, Issue 1
Abstract
We perform statistical simulations of light curves of extended microlensed sources having different brightness distribution in the source plane. We generated a set of realizations of lensing point mass system that takes into account an external shear, these include 12000 point masses which are uniformly distributed in the lens plane. The list of the circular symmetric source models used includes gaussian, limbdarkening, power law and Shakura-Sunyaev accretion disk models observed face-on. We estimated difference &eta, between the amplification curves (an analog of the light curves) for these different source models. This difference appears to be considerable, in some cases it amounts up to &sim, 10%. However, the effect of theshear within limits = 0 ÷, 0.5 is not considerable, though it leads to some diminishing of &eta,.
Authors and Affiliations
V. M. Sliusar, V. I. Zhdanov
Keywords
Related Articles
- EP ID EP598658
- DOI -
- Views 75
- Downloads 0
THE CHANGE INDICES OF SOLAR AND GEOMAGNETIC ACTIVITY AND THEIR INFLUENCE ON THE DINAMICS OF DRAG OF ARTIFICIAL SATELLITE
The time-frequency and multiple regression analysis of the orbital parameter characterizing the drag of satellites on circular and elliptical orbits with different perigees and orbital inclinations in the atmosphere of t...
SUN’S POLAR MAGNETIC FIELD REVERSALS IN SOLAR CYCLE 24
It is known that polar magnetic field of the Sun changes its sign at the maximum of solar cycle. These changes were called as polar field reversals. We investigated dynamics of high-latitude solar magnetic fields separat...
SPECTROSCOPIC INVESTIGATIONS OF GALACTIC CLUSTERS WITH ASSOCIATED CEPHEID VARIABLES. I. POLARIS CLUSTER AND α UMI
We present the results of an analysis of the spectra of nine so called Polaris cluster A−FV stars obtained during 2016 - 2018. Radial velocities (RV) and GAIA DR 18 parallaxes-distances for these stars allow us to determ...
SOFTWARE FOR PROCESSING OF DIGITIZED ASTRONEGATIVES FROM ARCHIVES AND DATABASES OF VIRTUAL OBSERVATORY
The paper discusses and illustrates the steps of basic processing of digitized image of astro negatives. Software for obtaining of a rectangular coordinates and photometric values of objects on photographic plates w...
X-RAY EMISSION AND ORIENTATION OF SELECTED PF GALAXY CLUSTERS
X-ray counterparts for 35 galaxy clusters contained in the PF catalogue of galaxy clusters and groups were found in XMM-Newton archive. 22 ones (all from ACO catalogue) have extended elliptic X-ray haloes appropriate for...