期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 442, 期 1, 页码 L76-L80出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnrasl/slu058
关键词
gravitational lensing: strong; galaxies: groups: individual: SL2S J08544-0121; dark matter; X-rays: galaxies: clusters
资金
- INAF-ASI [I/023/05/0, I/088/06/0, I/032/10/0]
- INAF through VIPERS
- FONDECYT [1120741, 3130750]
- ECOS-CONICYT [C12U02]
- CONACYT [165365, 203489]
- INFN project [PD51]
- [ASI/INAF/I/023/12/0]
- Grants-in-Aid for Scientific Research [12F02322] Funding Source: KAKEN
We report on the X-ray observation of a strong lensing selected group, SL2S J08544-0121, with a total mass of 2.4 +/- 0.6 x 10(14) M-circle dot which revealed a separation of 124 +/- 20 kpc between the X-ray emitting collisional gas and the collisionless galaxies and dark matter (DM), traced by strong lensing. This source allows to put an order of magnitude estimate to the upper limit to the interaction cross-section of DM of 10 cm(2) g(-1). It is the lowest mass object found to date showing a DM-baryons separation, and it reveals that the detection of bullet-like objects is not rare and confined to mergers of massive objects opening the possibility of a statistical detection of DM-baryons separation with future surveys.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据