• DOI:10.3847/1538-4357/aab617
Corpus ID: 55811307

Dark Matter under the Microscope: Constraining Compact Dark Matter with Caustic Crossing Events

@article{Diego2018DarkMU,
  title={Dark Matter under the Microscope: Constraining Compact Dark Matter with Caustic Crossing Events},
  author={J. Diego and N. Kaiser and T. Broadhurst and P. Kelly and S. Rodney and T. Morishita and M. Oguri and T. W. Ross and A. Zitrin and M. Jauzac and J. Richard and L. Williams and J. Vega and B. Frye and A. Filippenko},
  journal={The Astrophysical Journal},
  year={2018},
  volume={857},
  pages={25}
}

• J. Diego, N. Kaiser, +12 authors A. Filippenko
• Published 2018
• Physics
• The Astrophysical Journal

A galaxy cluster acts as a cosmic telescope over background galaxies but also as a cosmic microscope magnifying the imperfections of the lens. The diverging magnification of lensing caustics enhances the microlensing effect of substructure present within the lensing mass. Fine-scale structure can be accessed as a moving background source brightens and disappears when crossing these caustics. The recent discovery of a distant lensed star near the Einstein radius of the galaxy cluster MACSJ1149.5… Expand

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