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The Alternative to Dark Matter May be General Relativity Itself

17 Aug 2020, 14:00 UTC
The Alternative to Dark Matter May be General Relativity Itself
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This guest post was written by Xing-Ye Zhu, a third-year undergraduate student at Nanjing University, for an assignment in the Astronomical Literature Reading and Writing class taught by Professor Zhi-Yu Zhang. Xing-Ye is currently working under the supervision of Professor Yi Xie on strong deflection gravitational lensing. When not doing science, he enjoys watching movies, plays, and Kunqu Opera. You can always find a Rubik’s cube in his hands.
Title: Relativistic corrections to the rotation curves of disk galaxies
Authors: Alexandre Deur
First author’s institution: Department of Physics, University of Virginia
Status: Open access on arXivFor most astronomers, it is just common sense that dark matter accounts for approximately 85% of the matter in the universe. However, as long as the constituents of dark matter remain a mystery, some astronomers remain skeptical about our conventional understanding of dark matter. Recently, astronomer Alexandre Deur suggested that the theory of relativity itself may explain a phenomenon widely regarded as evidence for dark matter.

Why do we need dark matter? The theory of dark matter was proposed in the 1970s to explain the rotation curves of galaxies, which appeared inconsistent with the observed distribution of luminous matter (i.e. baryonic matter). ...

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