Modified gravity theories in light of the anomalous velocity dispersion of NGC1052-DF2

  title={Modified gravity theories in light of the anomalous velocity dispersion of NGC1052-DF2},
  author={Tousif Islam and Koushik Dutta},
  journal={Physical Review D},
Recent observations of ultra-dwarf galaxy NGC1052-DF2 started an interesting discussion between dark matter hypothesis and modified gravity theories. Reported low velocity dispersion (< 10.5 km/s at 90% confidence level) derived from the kinematic data of 10 globular clusters in the galaxy points towards an extraordinarily low dynamical mass ($\sim$ $3.4 \times 10^{8} M_{\odot}$) which is of the same order of the luminous mass ($\sim$ $2.0 \times 10^{8} M_{\odot}$) in the galaxy. This has been… Expand

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