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Search for new celestial objects using microlensing effect

利用微透镜效应寻找新的天体

基本信息

批准号：
14002006
负责人：
MURAKI Yasushi
金额：
$ 360.26万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Specially Promoted Research
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2006
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14002006/
关键词：
gravitational lensing extrasolar planet dark matter extrasolar terrestrial planet planetary science large telescope MACHO Large CCD camera ダークマタターブラックホール恒星

项目摘要

The main goals of the MOA project are the search for non-luminous astrophysical objects comprising a significant fraction of dark matter of the Galaxy, and also the search for Earth-like planets orbiting distant stars in the Galaxy. The phenomenon of gravitational microlensing offers a practical procedure for carrying out both these goals. To accomplish the goals, a wide-field optical telescope of diameter 1.8m was assembled in Japan during 2003. A telescope dome of diameter 8m, and a large CCD camera with 80 million pixels, were also fabricated in Japan at the same time. During 2004, the telescope, dome and camera were installed at the Mt. John Observatory of the University of Canterbury in New Zealand. First light occurred on March 1^<st> 2005.Main results: the first clear discovery of an extra-solar planet by gravitational microlensing occurred in July 2003. The discovery was made jointly by the MOA and OGLE groups. Additional measurements were subsequently made by the Hubble Space Telescope. The planet discovered in this event is similar to Jupiter.Its mass is 2.6 times that of Jupiter, and it orbits a star of 0.63 solar mass at an orbital radius of 4.3 AU.Another Jovian mass planet was found in March 2005. This discovery was made in a microlensing event of high magnification in collaboration with the OGLE, MicroFUN and PLANET/Robonet groups. During April 2005, a Neptune-like planet was found in an event of high magnification in collaboration with the OGLE and MicroFUN groups. Finally, in August 2005, an Earth-like planet was found in collaboration with the PLANET and OGLE/Robonet groups. The latter discoveries imply that our solar system is not a lonely system in our Galaxy

MOA项目的主要目标是寻找不发光的天体物理物体，其中包括银河系暗物质的很大一部分，以及寻找银河系中绕遥远恒星运行的类地行星。引力微透镜现象为实现这两个目标提供了一个实用的方法。为了实现这些目标，2003年在日本组装了一台直径为1.8米的宽视场光学望远镜。同时在日本制造了直径为8米的望远镜圆顶和8000万像素的大型CCD相机。在2004年期间，望远镜、圆顶和摄像机被安装在山。新西兰坎特伯雷大学约翰天文台。2005年3月1日首次发现<st>太阳系外行星。主要结果：2003年7月首次通过引力微透镜发现太阳系外行星。这一发现是由MOA和OGLE小组共同完成的。随后，哈勃太空望远镜进行了进一步的测量。此次发现的行星与木星相似，质量是木星的2. 6倍，围绕一颗0. 63太阳质量的星星运行，轨道半径为4. 3 Au，另一颗类木质量行星于2005年3月被发现。这一发现是在与OGLE，MicroFUN和PLANET/Robonet小组合作的高放大率微透镜事件中发现的。2005年4月，在OGLE和MicroFUN小组的合作下，在一次高放大率的事件中发现了一颗类似海王星的行星。最后，在2005年8月，与PLANET和OGLE/Robonet小组合作发现了一颗类地行星。后者的发现意味着我们的太阳系在我们的银河系中并不是一个孤独的系统

项目成果

期刊论文数量（45）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

A Jovian-Mass Planet in Microlensing Event OGLE-2005-BLG-071

DOI：
10.1086/432795
发表时间：
2005-05
期刊：
The Astrophysical Journal Letters
影响因子：
0
作者：
A. Udalski;M. Jaroszynski;B. Paczyński;M. Kubiak;M. Szymański;I. Soszyński;G. Pietrzyński;K. Ulaczyk;O. Szewczyk;Ł. Wyrzykowski;G. Christie;D. Depoy;S. Dong;A. Gal-yam;B. Gaudi;A. Gould;C. Han;S. Lépine;J. Mccormick;B.-G. Park;R. Pogge;D. Bennett;I. Bond;Y. Muraki;P. Tristram;P. Yock;J. Beaulieu;D. Bramich;D. Bramich;S. Dieters;J. Greenhill;K. Hill;K. Horne;D. Kubas
通讯作者：
A. Udalski;M. Jaroszynski;B. Paczyński;M. Kubiak;M. Szymański;I. Soszyński;G. Pietrzyński;K. Ulaczyk;O. Szewczyk;Ł. Wyrzykowski;G. Christie;D. Depoy;S. Dong;A. Gal-yam;B. Gaudi;A. Gould;C. Han;S. Lépine;J. Mccormick;B.-G. Park;R. Pogge;D. Bennett;I. Bond;Y. Muraki;P. Tristram;P. Yock;J. Beaulieu;D. Bramich;D. Bramich;S. Dieters;J. Greenhill;K. Hill;K. Horne;D. Kubas

Multiple Outbursts of a Cataclysmic Variable in the Globular Cluster M22

球状星团 M22 中灾难性变星的多次爆发