Scale-invariant dynamics in the Solar system
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10423400" target="_blank" >RIV/00216208:11320/20:10423400 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Nj3cNL5GdA" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Nj3cNL5GdA</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnrasl/slaa113" target="_blank" >10.1093/mnrasl/slaa113</a>
Alternative languages
Result language
angličtina
Original language name
Scale-invariant dynamics in the Solar system
Original language description
The covariant scale-invariant dynamics (SID) theory has recently been proposed as a possible explanation for the observed dynamical discrepancies in galaxies. SID implies that these discrepancies - commonly attributed to dark matter - arise instead from a non-standard velocity-dependent force that causes two-body near-Keplerian orbits to expand. We show that the predicted expansion of the Earth-Moon orbit is incompatible with lunar laser ranging data at >200 sigma. Moreover, SID predicts that the gravitating mass of any object was much smaller in the past. If true, a low-mass red giant star must be significantly older than in standard theory. This would make it much older than the conventional age of the Universe, which, however, is expected to be similarly old in SID. Moreover, it is not completely clear whether SID truly contains new physics beyond general relativity, with several previous works arguing that the extra degree of freedom is purely mathematical. We conclude that the SID model is falsified at high significance by observations across a range of scales, even if it is theoretically well formulated.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Monthly Notices of the Royal Astronomical Society
ISSN
0035-8711
e-ISSN
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Volume of the periodical
497
Issue of the periodical within the volume
1
Country of publishing house
GB - UNITED KINGDOM
Number of pages
5
Pages from-to
"L62"-"L66"
UT code for WoS article
000574920100012
EID of the result in the Scopus database
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