Mordehai Milgrom
Mordehai Milgrom | |
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Weizmann Institute |
Mordehai "Moti" Milgrom is an Israeli
Biography
He received his B.Sc. degree from the Hebrew University of Jerusalem in 1966. Later he studied at the Weizmann Institute of Science and completed his doctorate in 1972. Before 1980 he worked primarily on high-energy astrophysics and became well-known for his kinematical model of the star system SS 433.[1][2] In the academic years 1980–1981 and 1985–1986 he was at the Institute for Advanced Study in Princeton.[3] In 1983, he proposed modified Newtonian dynamics (MOND) as an alternative to the dark matter and galaxy rotation curve problems,[4][5][6] although preliminary work and discussions on this subject started as early as 1981.[7]
Milgrom and modified Newtonian dynamics
Milgrom suggests that Newton's law of universal gravitation should be modified for very small accelerations, typically of the order of 10−11g and less.
Recent findings
In 2022, a study about an astronomical observation of the tidal tails in five star clusters was published that might provide evidence of MOND.[8] Specifically, there is an uneven distribution of stars that shows no indication that any dark matter was involved in causing it.[9] Kyu-Hyun Chae's 2023-2024 study of widely-separated binary star pairs presents itself as robustly confirming the need to modify standard gravitational theory at low-valued accelerations. [10]
Personal life
Milgrom is married and has three daughters.
See also
- Cosmic rays
- Gamma-ray burst
- Gamma ray and x-ray sources.
References
- S2CID 119240769. page 5 of arXiv.org preprint
- Bibcode:1979A&A....78L..17M.
- ^ Mordehai, Milgrom, Community of Scholars Profile, IAS Archived 2016-03-07 at the Wayback Machine
- Bibcode:1983ApJ...270..365M.
- Bibcode:1983ApJ...270..371M.
- Bibcode:1983ApJ...270..384M.
- Bibcode:2015CaJPh..93..126S.
- ^ Metcalfe, Tom (21 November 2022). "Lopsided star cluster may disprove Newton and Einstein, controversial new study claims". livescience.com. Retrieved 23 November 2022.
- . Retrieved 23 November 2022.
- ^ Chae, Kyu-Hyun (10 January 2024), "Robust Evidence for the Breakdown of Standard Gravity at Low Acceleration from Statistically Pure Binaries Free of Hidden Companions", The Astrophysical Journal, 960 (2): 114–139
Further reading
- Milgrom, Mordehai (Aug 2002), "Does Dark Matter Really Exist?" (PDF), Scientific American, pp. 42–50, 52, archived from the original (PDF) on 2004-09-19
- Schilling, Govert (April 2007), "Battlefield Galactica: Dark Matter vs. MOND" (PDF), Sky & Telescope, pp. 30–36
- Zhiping Li, Ran Li. (30 April 2014). "The relativistic astrodynamics of spiral tracks, localized equivalence principle and the dark matter problem of our Milky Way galaxy". Sciencepaper Online.
External links
- MOND - A Pedagogical Review - M. Milgrom, 2001
- M. Milgrom @ Astrophysics Data System
- "MOND: Scale invariance at low accelerations - an alternative to the dark Universe". YouTube. Weizmann Institute of Science. May 11, 2020. Archived from the original on 2021-12-21.
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