Stellar streams in chameleon gravity

  title={Stellar streams in chameleon gravity},
  author={Aneesh P Naik and N. Wyn Evans and Ewald Puchwein and H. Zhao and A. C. Davis},
  journal={Physical Review D},
Theories of gravity that incorporate new scalar degrees of freedom typically require screening mechanisms to ensure consistency with Solar System tests. One widely-studied mechanism -- the chameleon -- can lead to violations of the equivalence principle (EP), as screened and unscreened objects fall differently. If the stars are screened but the surrounding dark matter is not, this leads to asymmetry between leading and trailing streams. We provide analytic estimates of the magnitude of this… 
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