Constraining SuperWIMPy and Warm Subhalos with Future Submillilensing
高能物理 - 唯象学
2008-11-26 v2
摘要
We propose to observe QSO-galaxy strong lens systems to give a new constraint on the damping scale of the initial fluctuations. We find that the future observation of submilliarc scale astrometric shifts of the multiple lensed images of QSOs would find \sim 10^{(3-9)} M_{\odot} subhalos inside the macrolens halo. The superweakly interacting massive particles (superWIMPs) produced from a WIMP decay and the warm dark matter (WDM) particles that predict a comoving damping scale larger than \sim 2 kpc can be constrained if \sim 10^3 M_{\odot} subhalos are detected.
引用
@article{arxiv.hep-ph/0608126,
title = {Constraining SuperWIMPy and Warm Subhalos with Future Submillilensing},
author = {Junji Hisano and Kaiki Taro Inoue and Tomo Takahashi},
journal= {arXiv preprint arXiv:hep-ph/0608126},
year = {2008}
}
备注
14 pages, 2 figures, revised version accepted for publication in PLB