Nová kontroverzní teorie tvrdí, že gravitace a temná hmota nemusí ...
Gravitaci první popsal Newton svými známými rovnicemi, nicméně i on sám nebyl úplně spokojen s tím, že “jen” popsal jak gravitace funguje. K tomu ji totiž musel ...
jiných studií
Tento aspekt zmiňované teorie byl ostatně úspěšně otestován holandskými vědci. To ale ještě neznamená, že je celá teorie potvrzena, protože se konalo i několik <anchor>jiných studií</anchor>, které testovaly jiné části teorie a ty pro ni nedopadly moc dobře. Nakonec jde také o to, že Verlinde na teorii stále pracuje a není ještě dokončena. Kromě toho může být vyvrácena například pokud dokážeme detekovat samotné částice temné hmoty, v což věří velká část vědeckého světa – podle nich tuto částici jednou nutně budeme must detekovat, jde jen o citlivost našich senzorů a pozorovacích technik. Kdyby ale Verlindeho teorie byla potvrzena, tak by to mohlo mít dalekosáhlé implikace na naše porozumění celého vesmíru. Na teoriích popisující gravitaci je totiž závislých mnoho dalších teorií, kromě jiného například o Velkém třesku nebo rozpínání vesmíru. Nicméně jelikož Verlinde na své teorii stále ještě pracuje a dále ji rozvíjí, dozvíme se jestli tato teorie opravdu změní svět až někdy jindy.
[1702.04355] Testing Verlinde's Emergent Gravity with the Radial Acceleration Relation
\[1702.04355\] Testing Verlinde's Emergent Gravity with the Radial Acceleration Relation

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# Astrophysics > Astrophysics of Galaxies

**arXiv:1702.04355** (astro-ph)


\[Submitted on 14 Feb 2017\]

# Title:Testing Verlinde's Emergent Gravity with the Radial Acceleration Relation

Authors: [Federico Lelli](https://arxiv.org/search/astro-ph?searchtype=author&query=Lelli,+F) (1), [Stacy S. McGaugh](https://arxiv.org/search/astro-ph?searchtype=author&query=McGaugh,+S+S) (2), [James M. Schombert](https://arxiv.org/search/astro-ph?searchtype=author&query=Schombert,+J+M) (3) ((1) European Southern Observatory, (2) Case Western Reserve University, (3) University of Oregon)

View a PDF of the paper titled Testing Verlinde's Emergent Gravity with the Radial Acceleration Relation, by Federico Lelli (1) and 4 other authors

[View PDF](/pdf/1702.04355)

> Abstract:Verlinde (2016) has recently proposed that spacetime and gravity may emerge from an underlying microscopic theory. In a de Sitter spacetime, such emergent gravity (EG) contains an additional gravitational force due to dark energy, which may explain the mass discrepancies observed in galactic systems without the need of dark matter. For a point mass, EG is equivalent to Modified Newtonian Dynamics (MOND). We show that this equivalence does not hold for finite-size galaxies: there are significant differences between EG and MOND in the inner regions of galaxies. We confront theoretical predictions with the empirical Radial Acceleration Relation (RAR). We find that (i) EG is consistent with the observed RAR only if we substantially decrease the fiducial stellar mass-to-light ratios; the resulting values are in tension with other astronomical estimates; (ii) EG predicts that the residuals around the RAR should correlate with radius; such residual correlation is not observed.

Comments:5 pages, 2 figures, accepted for publication in MNRAS LettersSubjects:Astrophysics of Galaxies (astro-ph.GA); Cosmology and Nongalactic Astrophysics (astro-ph.CO); General Relativity and Quantum Cosmology (gr-qc); High Energy Physics - Theory (hep-th)Cite as:[arXiv:1702.04355](https://arxiv.org/abs/1702.04355) \[astro-ph.GA\](or [arXiv:1702.04355v1](https://arxiv.org/abs/1702.04355v1) \[astro-ph.GA\] for this version)
[https://doi.org/10.48550/arXiv.1702.04355](https://doi.org/10.48550/arXiv.1702.04355)

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[https://doi.org/10.1093/mnrasl/slx031](https://doi.org/10.1093/mnrasl/slx031)

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## Submission history

From: Federico Lelli \[ [view email](/show-email/603c8a02/1702.04355)\]

**\[v1\]**
Tue, 14 Feb 2017 19:00:01 UTC (251 KB)

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