arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0909.2866astro-ph.COastro-ph.HEhep-ph
收藏

在弱透镜巡天中作为宇宙弦特征的星系旋转

Rotation of galaxies as a signature of cosmic strings in weak lensing surveys

Daniel B. Thomas, Carlo R. Contaldi, Joao Magueijo

摘要:

来源于拓扑缺陷的矢量扰动可以在背景星系的透镜中产生旋转。这是一个潜在的吸烟枪存在的缺陷,因为旋转产生一个卷曲状的组件中的弱透镜信号,这是不是由标准的密度扰动在线性顺序产生。这个旋转信号是由宇宙弦产生的。未来的大规模弱透镜调查应该能够检测到这种信号,即使是弦张力的数量级低于目前的限制。

英文摘要:

Vector perturbations sourced by topological defects can generate rotations in the lensing of background galaxies. This is a potential smoking gun for the existence of defects since rotation generates a curl-like component in the weak lensing signal which is not generated by standard density perturbations at linear order. This rotation signal is calculated as generated by cosmic strings. Future large scale weak lensing surveys should be able to detect this signal even for string tensions an order of magnitude lower than current constraints.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑