| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8197881 | Physics Letters B | 2006 | 6 Pages |
Abstract
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 â¼10(3-9)Mâ 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 â¼2kpc can be constrained if â¼103Mâ subhalos are detected.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
Junji Hisano, Kaiki Taro Inoue, Tomo Takahashi,