Results 11 to 20 of about 2,129 (213)
The universal galaxy rotation curve [PDF]
The Astrophysical Journal, 1991 From the analysis of an extended set of selected galaxy rotation curves, it is found that for a given luminosity the rotation curves of spiral galaxies within the optical radius are a universal function. This result implies strong systematic variations of both the amplitude and the profil of the circular velocity with luminosity faint (bright) galaxies
Persic, M., Salucci, P.
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Understanding galaxy rotation curves with Verlinde’s emergent gravity [PDF]
Classical and Quantum Gravity, 2022 Abstract We present the results from the analysis of galaxy rotation curves with Verlinde’s emergent gravity. We use the data in the Spitzer Photometry and Accurate Rotation Curves database, which contains a sample of 175 nearby disk galaxies with 3.6 µm surface photometry and rotation curves. We compute the gravitational acceleration at
Youngsub Yoon +2 more
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A Symmetric Ring Galaxy Model Explains the Rotation Curve of Galaxies [PDF]
Applied Physics Research, 2023 This paper proposes a symmetric ring galaxy (SRG) model based on the general structure of galaxies. Based on this model, we have obtained results that are consistent with the actual observation results of the galaxy rotation curve, thus solving the problem of inconsistency between the observation results of the galaxy rotation curve and the expected ...
Zeng, Jiqing
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Testing CCC+TL Cosmology with Galaxy Rotation Curves [PDF]
GalaxiesThis paper aims to explore whether astrophysical observations, primarily galaxy rotation curves, result from covarying coupling constants (CCC) rather than from dark matter.
Rajendra P. Gupta
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The unexpected diversity of dwarf galaxy rotation curves [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 17 pages, 6 figures, 2 tables, MNRAS ...
Oman, K.A. +11 more
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Many body gravity and the galaxy rotation curves [PDF]
European Physical Journal C: Particles and FieldsA novel theory was proposed earlier to model systems with thermal gradients, based on the postulate that the spatial and temporal variation in temperature can be recast as a variation in the metric.
S. Ganesh
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Extended universal rotational curve of spiral galaxies
Discover SpaceIn this work, we aim to advance the Universal Rotation Curve (URC) paradigm by leveraging new data and extending its observational domain. Building on previous studies that established the URC using optical rotation curves reaching the galaxy optical ...
Esha Bhatia +3 more
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Elongated Gravity Sources as an Analytical Limit for Flat Galaxy Rotation Curves [PDF]
Universe, 2021 The flattening of spiral-galaxy rotation curves is unnatural in view of the expectations from Kepler’s third law and a central mass. It is interesting, however, that the radius-independence velocity is what one expects in one less dimension. In our three-
Felipe J. Llanes-Estrada
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A new empirical fit to galaxy rotation curves
Frontiers in Astronomy and Space Sciences, 2023 We present a new empirical model for galaxy rotation curves that introduces a velocity correction term ω, derived from observed stellar motion and anchored to Keplerian baselines.
David C. Flynn, Jim Cannaliato
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Uncertainties in galaxy rotation curves [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Assessing the likelihood that the rotation curve of a galaxy matches predictions from galaxy formation simulations requires that the uncertainties in the circular speed as a function of radius derived from the observational data be statistically robust. Few uncertainties presented in the literature meet this requirement. In this
Sellwood, J A +2 more
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