引力微透镜事件 MOA-2012-BLG-486 中短期异常的解释
太阳与恒星天体物理
2015-06-17 v1
摘要
行星微透镜信号通常表现为标准单透镜光变曲线的短期扰动。一部分双源事件产生的扰动可以模仿行星信号，从而在行星解释和双源解释之间引入模糊性。在本文中，我们展示了微透镜事件 MOA-2012-BLG-486 的分析结果，其光变曲线表现出短暂的扰动。不考虑不同波段数据的常规建模得出的最佳拟合行星模型略优于最佳拟合双源模型。然而，当允许扰动期间颜色发生变化时，我们发现双源模型提供了显著更好的拟合，从而清楚地解决了简并性。该事件不仅表明考虑短期异常的各种解释的重要性，也证明了多波段数据对于检查假阳性行星信号可能性的重要性。
引用
@article{arxiv.1308.5762,
title = {Interpretation of a Short-Term Anomaly in the Gravitational Microlensing Event MOA-2012-BLG-486},
author = {K. -H. Hwang and J. -Y. Choi and I. A. Bond and T. Sumi and C. Han and B. S. Gaudi and A. Gould and V. Bozza and J. -P. Beaulieu and Y. Tsapras and F. Abe and D. P. Bennett and C. S. Botzler and P. Chote and M. Freeman and A. Fukui and D. Fukunaga and P. Harris and Y. Itow and N. Koshimoto and C. H. Ling and K. Masuda and Y. Matsubara and Y. Muraki and S. Namba and K. Ohnishi and N. J. Rattenbury and To. Saito and D. J. Sullivan and W. L. Sweatman and D. Suzuki and P. J. Tristram and K. Wada and N. Yamai and P. C. M. Yock and A. Yonehara and L. Andrade de Almeida and D. L. DePoy and Subo Dong and F. Jablonski and Y. K. Jung and A. Kavka and C. -U. Lee and H. Park and R. W. Pogge and I. -G. Shin and J. C. Yee and M. D. Albrow and E. Bachelet and V. Batista and S. Brillant and J. A. R. Caldwell and A. Cassan and A. Cole and E. Corrales and Ch. Coutures and S. Dieters and D. Dominis Prester and J. Donatowicz and P. Fouqué and J. Greenhill and U. G. Jørgensen and S. R. Kane and D. Kubas and J. -B. Marquette and R. Martin and P. Meintjes and J. Menzies and K. R. Pollard and A. Williams and D. Wouters and D. M. Bramich and M. Dominik and K. Horne and P. Browne and M. Hundertmark and S. Ipatov and N. Kains and C. Snodgrass and I. A. Steele and R. A. Street},
journal= {arXiv preprint arXiv:1308.5762},
year = {2015}
}
备注
5 pages, 4 figures and ApJ submitted