* Astronomy

Members Login
Username 
 
Password 
    Remember Me  
Post Info TOPIC: OGLE-2016-BLG-1003


L

Posts: 131433
Date:
OGLE-2016-BLG-1003
Permalink  
 


Title: OGLE-2016-BLG-1003: First Resolved Caustic-crossing Binary-source Event Discovered by Second-generation Microlensing Surveys
Author: Y. K. Jung, A. Udalski, I. A. Bond, J. C. Yee, A. Gould, C. Han, M. D. Albrow, C.-U. Lee, S.-L. Kim, K.-H. Hwang, S.-J. Chung, Y.-H. Ryu, I.-G. Shin, W. Zhu, S.-M. Cha, D.-J. Kim, Y. Lee, B.-G. Park, R. W. Pogge, J. Skowron, M. K. Szymanski, R. Poleski, P. Mroz, S. Kozlowski, P. Pietrukowicz, I. Soszynski, K. Ulaczyk, M. Pawlak, F. Abe, D.P. Bennett, R. Barry, T. Sumi, Y. Asakura, A. Bhattacharya, M. Donachie, A. Fukui, Y. Hirao, Y. Itow, N. Koshimoto, M.C.A. Li, C.H. Ling, K. Masuda, Y. Matsubara, Y. Muraki, M. Nagakane, N. J. Rattenbury, P. Evans, A. Sharan, D.J. Sullivan, D. Suzuki, P. J. Tristram, T. Yamada, T. Yamada, A. Yonehara

We report the analysis of the first resolved caustic-crossing binary-source microlensing event OGLE-2016-BLG-1003. The event is densely covered by the round-the-clock observations of three surveys. The light curve is characterized by two nested caustic-crossing features, which is unusual for typical caustic-crossing perturbations. From the modelling of the light curve, we find that the anomaly is produced by a binary source passing over a caustic formed by a binary lens. The result proves the importance of high-cadence and continuous observations, and the capability of second-generation microlensing experiments to identify such complex perturbations that are previously unknown. However, the result also raises the issues of the limitations of current analysis techniques for understanding lens systems beyond two masses and of determining the appropriate multiband observing strategy of survey experiments.

Read more (798kb, PDF)



__________________
Page 1 of 1  sorted by
 
Quick Reply

Please log in to post quick replies.



Create your own FREE Forum
Report Abuse
Powered by ActiveBoard