VIA lecture by Prof. Norbert Klein "Can MOND explain the data scattering of "big G" ?" was given on 22.02.2019.
Its record is in VIA library
http://viavca.in2p3.fr/norbert_klein.html
and its presentation is attached
The following questions were put during it
Houri Ziaeepour: Why only spiral galaxies used in this plot ?
Houri Ziaeepour: Some people say that the minimum acceleration a0 in ellipticals depend on the galaxy set.
Bernard: Did you try fitting for both a_0 and beta together?
Houri Ziaeepour: I am confused. You said that MOND in general is ruled out. Thus how do you interpret your conclusion about g experiments ?
Bernard: Well, you have precision measurements to go by.
Houri Ziaeepour: It does not work at cosmological scales. As you said in galaxy clusters
ant: Did you read: Absence of a fundamental acceleration scale in galaxies Davi C. Rodrigues 1,2*, Valerio Marra 1,2*, Antonino del Popolo3,4,5 and Zahra Davari6? MOND is ruled out at more than 10 sigma!!!!!
Bernard: for double fitting (a_0 and B beta together).
Houri Ziaeepour: The additional term you added to analysis may simply be a systematic not considered in the previous analysis. The MOND correction
Houri Ziaeepour: But it can have another origin rather than MOND
ant: So, according to you some MONDs are ruled out, other not. Which ones?
Jonathon Baird: It could also be extra parameters fitting a model to data... Do you remember the evidence off the top of your head?
Houri Ziaeepour: The estimation of electromagnetic acceleration is very difficult
ant: Did you receive feedback from MOND community?
Houri Ziaeepour: I am not experimentalist but it is very difficult to take into account all non-gravitational forces.
Jonathon Baird: Basically when you add parameters to your model you are able to fit a model better purely by virture of more parameters in your model. the statistical evidence will tell you how confident you should be with an extra parameter in your model.
Bernard: no sensitivity is too low for LIGO
Houri Ziaeepour: sure. We always need better experiments.
Bernard: Just work out the amplitude: its way too low.
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