GRAVITATIONAL BINARY-LENS EVENTS WITH PROMINENT EFFECTS OF LENS ORBITAL MOTION

GRAVITATIONAL BINARY-LENS EVENTS WITH PROMINENT EFFECTS OF LENS ORBITAL MOTION
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具有透镜轨道运动显着影响的引力双透镜事件

DOI：
10.1088/0004-637x/778/2/134
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发表时间：
2013
期刊：
The Astrophysical Journal
影响因子：
--
通讯作者：
R. Street
R. Street
中科院分区：
--
文献类型：
--
作者：
H. Park;A. Udalski;C. Han;A. Gould;J. Beaulieu;Y. Tsapras;M. Szyma'nski;M. Kubiak;I. Soszy'nski;G. Pietrzy'nski;R. Poleski;K. Ulaczyk;P. Pietrukowicz;S. Kozłowski;J. Skowron;Ł. Wyrzykowski;J.;D. Depoy;S. Dong;B. Gaudi;K. Hwang;Y. Jung;A. Kavka;C.‐U. Lee;L. Monard;B.;R. Pogge;I. Porritt;I. Shin;J. Yee;M. Albrow;D. Bennett;J. Caldwell;A. Cassan;C. Coutures;D. Dominis;J. Donatowicz;P. Fouqu'e;J. Greenhill;M. Huber;U. Jørgensen;S. Kane;D. Kubas;J. Marquette;J. Menzies;C. Pitrou;K. Pollard;K. Sahu;J. Wambsganss;A. Williams;M. Zub;A. Allan;D. Bramich;P. Browne;M. Dominik;K. Horne;M. Hundertmark;N. Kains;C. Snodgrass;I. Steele;R. Street

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由二元质量组成的透镜产生的引力微透镜事件是重要的，因为它们提供了确定透镜物理参数的主要通道。在这项工作中，我们分析了两个二元透镜事件，OGLE-2006-BLG-277和OGLE-2012-BLG-0031的光变曲线，其中光变曲线表现出强烈的偏离标准模型。从考虑各种二阶效应的建模中，我们发现这些偏差主要由透镜轨道运动的影响来解释。我们还发现，透镜视差效应可以在一定程度上模仿轨道效应。这意味着不考虑轨道效应的二元透镜事件的光变曲线建模可能导致与实际值显著不同的透镜松弛，从而导致物理透镜参数的错误确定。这表明在解释双透镜事件的光变曲线时，常规考虑轨道效应的重要性。发现OGLE-2006-BLG-277的透镜是由一颗低质量星星和一颗褐矮星伴星组成的双星。
Gravitational microlensing events produced by lenses composed of binary masses are important because they provide a major channel for determining physical parameters of lenses. In this work, we analyze the light curves of two binary-lens events, OGLE-2006-BLG-277 and OGLE-2012-BLG-0031, for which the light curves exhibit strong deviations from standard models. From modeling considering various second-order effects, we find that the deviations are mostly explained by the effect of the lens orbital motion. We also find that lens parallax effects can mimic orbital effects to some extent. This implies that modeling light curves of binary-lens events not considering orbital effects can result in lens parallaxes that are substantially different from actual values and thus wrong determinations of physical lens parameters. This demonstrates the importance of routine consideration of orbital effects in interpreting light curves of binary-lens events. It is found that the lens of OGLE-2006-BLG-277 is a binary composed of a low-mass star and a brown dwarf companion.
Difference imaging photometry of blended gravitational microlensing events with a numerical kernel
DOI： 10.1111/j.1365-2966.2009.15098.x
发表时间： 2009-05
期刊： Monthly Notices of the Royal Astronomical Society
影响因子： 4.8
作者：
M. Albrow;K. Horne;D. Bramich;P. Fouqué;V. R. Miller;J. Beaulieu;C. Coutures;C. Coutures;J. Menzies;A. Williams;V. Batista;D. Bennett;S. Brillant;A. Cassan;S. Dieters;D. Prester;J. Donatowicz;J. Greenhill;N. Kains;S. Kane;D. Kubas;J. Marquette;K. Pollard;K. Sahu;Y. Tsapras;Y. Tsapras;J. Wambsganss;M. Zub
通讯作者： M. Albrow;K. Horne;D. Bramich;P. Fouqué;V. R. Miller;J. Beaulieu;C. Coutures;C. Coutures;J. Menzies;A. Williams;V. Batista;D. Bennett;S. Brillant;A. Cassan;S. Dieters;D. Prester;J. Donatowicz;J. Greenhill;N. Kains;S. Kane;D. Kubas;J. Marquette;K. Pollard;K. Sahu;Y. Tsapras;Y. Tsapras;J. Wambsganss;M. Zub
CHARACTERIZING LENSES AND LENSED STARS OF HIGH-MAGNIFICATION SINGLE-LENS GRAVITATIONAL MICROLENSING EVENTS WITH LENSES PASSING OVER SOURCE STARS
表征高倍率单透镜引力微透镜事件的透镜和透镜恒星（透镜经过源恒星）
DOI： 10.1088/0004-637x/751/1/41
发表时间： 2012
期刊： The Astrophysical Journal
影响因子： --
作者：
Choi J
通讯作者： Choi J