A Bayesian algorithm for model selection applied to caustic-crossing binary-lens microlensing events
A Bayesian algorithm for model selection applied to caustic-crossing binary-lens microlensing events
复制标题
应用于焦散交叉二元透镜微透镜事件的模型选择贝叶斯算法
DOI:
10.1111/j.1365-2966.2012.21813.x
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发表时间:
2012
影响因子:
4.8
通讯作者:
Cassan
中科院分区:
文献类型:
--
作者:
Browne;Hundertmark;Cassan
We present a full Bayesian algorithm designed to perform automated searches of the parameter space of caustic-crossing binary-lens microlensing events. This builds on previous work implementing priors derived from Galactic models and geometrical considerations. The geometrical structure of the priors divides the parameter space into well-defined boxes that we explore with multiple Monte Carlo Markov Chains. We outline our Bayesian framework and test our automated search scheme using two data sets: a synthetic light curve, and the observations of OGLE-2007-BLG-472 that we analysed in previous work. For the synthetic data, we recover the input parameters. For OGLE-2007-BLG-472 we find that while χ2is minimized for a planetary mass-ratio model with extremely long time-scale, the introduction of priors and minimization of the Bayesian information criterion, rather than χ2, favour a more plausible lens model, a binary star with components of 0.78 and 0.11 M⊙at a distance of 6.3 kpc, compared to our previous result of 1.50 and 0.12 M⊙at a distance of 1 kpc.
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影响因子:
6.8
作者:
AKAIKE, H
通讯作者:
AKAIKE, H
DOI:
10.1086/340977
发表时间:
2000
期刊:
The Astrophysical Journal
影响因子:
--
作者:
D. Bennett;S. Rhie
通讯作者:
S. Rhie
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
N. Kains;A. Cassan;K. Horne;M. Albrow;S. Dieters;P. Fouqué;J. Greenhill;A. Udalski;M. Zub;D. Bennett;M. Dominik;J. Donatowicz;D. Kubas;Y. Tsapras;T. Anguita;V. Batista;J. Beaulieu;S. Brillant;M. Bode;D. Bramich;M. Burgdorf;J. Caldwell;K. Cook;C. Coutures;D. Prester;U. Jørgensen;S. Kane;J. Marquette;R. Martin;J. Menzies;K. Pollard;N. Rattenbury;K. Sahu;C. Snodgrass;I. Steele;C. Vinter;J. Wambsganss;A. Williams;M. Kubiak;G. Pietrzyński;I. Soszyński;O. Szewczyk;M. Szymański;K. Ulaczyk;L. Wyrzykowski
通讯作者:
L. Wyrzykowski
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
A. Cassan;K. Horne;N. Kains;Y. Tsapras;P. Browne
通讯作者:
P. Browne
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
D. Kubas;A. Cassan;J. Beaulieu;C. Coutures;C. Coutures;M. Dominik;M. Albrow;S. Brillant;J. Caldwell;D. Dominis;J. Donatowicz;C. Fendt;P. Fouqué;U. Jørgensen;J. Greenhill;K. Hill;J. Heinmüller;K. Horne;S. R. Kane;J. Marquette;R. Martin;J. Menzies;K. Pollard;K. Sahu;C. Vinter;J. Wambsganss;R. Watson;A. Williams;C. Thurl
通讯作者:
C. Thurl