Existence of Dark Matter 20170205 남성현 20170218 맹지호

Dark Matter

MOdified Newtonian Dynamics 𝐹= 𝑚 𝑔 𝜇 𝑎 𝑎 0 𝑎 𝜇 𝑥≫1 ≈1, 𝜇 𝑥≪1 ≈𝑥 Weizmann Institute of Technology, Department of Particle and Astrophysics M. Milgrom (1946~)

MOdified Newtonian Dynamics G. Gentile et al. (2010). Mass models from high-resolution HI data of the dwarf galaxy NGC 1560. Monthly Notices of Royal Astronomical Society. 000.

NGC-1052 DF2 NASA/ESA/P. van Dokkum (Yale University)]

(Normally, 𝑀 𝑑𝑎𝑟𝑘 / 𝑀 𝑠𝑡𝑎𝑟 ≳400) NGC-1052 DF2 𝑀 𝑑𝑎𝑟𝑘 / 𝑀 𝑠𝑡𝑎𝑟 ≲4 (Normally, 𝑀 𝑑𝑎𝑟𝑘 / 𝑀 𝑠𝑡𝑎𝑟 ≳400) NGC-1052 DF2 Pieter van Dokkum et al(2018). A galaxy lacking dark matter. Nature 555.

Bullet Cluster NASA/CXC/M. Weiss - Chandra X-Ray Observatory: 1E 0657-56

Conclusion Dark matter may or MAY NOT be present in a galaxy Rejects MOND and any other theories that suggests an alternative to dark matter Dark matter is separable from matter https://scienceblogs.com/startswithabang/2011/03/01/good-ideas-bad-ideas-mond-and

Other Alternative Theories? Scalar Field Sterile Neutrinos Photons Etc…

Reference M. Milgrom (1983). A Modification of the Newtonian Dynamics as a Possible Alternative to the Hidden Mass Hypothesis. The Astrophysical Journal, Part I, vol. 270. G. Gentile et al. (2010). Mass models from high-resolution HI data of the dwarf galaxy NGC 1560. Monthly Notices of Royal Astronomical Society. 000. Pieter van Dokkum et al(2018). A galaxy lacking dark matter. Nature 555. Leonard Kelley(2019). MOND and Other Theories on Dark Matter and Dark Energy. Owlcation.