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Investigating the gravitational field in the early-type galaxies (ETGs, i.e.ellipticals and lenticulars) up to large radii is observationally difficult. Itis questionable how the radial acceleration (RAR) in the ETGs looks like, i.e.the relation between the dynamically inferred gravitational acceleration andthe acceleration expected from the distribution of the visible matter. Thisrelation is nearly universal for the spiral galaxies, in agreement with theMOND modified dynamics paradigm. In this contribution, we investigate a sampleof 15 ETGs. We extract their full kinematic profiles out to several effectiveradii from their globular cluster systems and estimate their gravitationalfield using the Jeans equation. We parametrize the gravitational field by thatproduced by the stars and a Navarro-Frenk-White DM halo. We find that only 4-5of our ETGs follow the RAR for the spiral galaxies. All these galaxies are fastrotators, have disky isophotes, appear mostly very elongated and the havebluest colors in our sample. This suggests that they might be spiral galaxieswhich lost their gas. Our galaxies deviating from the RAR for the spiralseither disprove MOND, contain unobserved matter, or indicate a flaw in themethod.

Investigating the radial acceleration relation in early-type galaxies using the Jeans analysis