On the nature of cosmological redshift and spectral shift in Schwarzschild-like and other spacetimes

Radosz, Andrzej; Augousti, A.T.; Siwek, Alicja

doi:10.1007/s10714-012-1495-4

Cited by 6 publications

(5 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These results are in agreement with those of [15] and [5] (in the latter case they were derived with the help of the Kruskal coordinates). As noted above, in FRW cosmology, these formulas are valid only for the de Sitter solution (see more comments on this in the following).…”

Section: Fl Flsupporting

confidence: 90%

Unified approach to redshift in cosmological/black hole spacetimes and synchronous frame

Toporensky¹,

Заславский²,

Попов³

2017

Eur. J. Phys.

View full text Add to dashboard Cite

Usually, interpretation of redshift in static spacetimes (for example, near black holes) is opposed to that in cosmology. In this methodological note, we show that both explanations are unified in a natural picture. This is achieved if, considering the static spacetime, one (i) makes a transition to a synchronous frame, and (ii) returns to the original frame by means of local Lorentz boost. To reach our goal, we consider a rather general class of spherically symmetric spacetimes. In doing so, we construct frames that generalize the well-known Lemaitre and Painlevé–Gullstand ones and elucidate the relation between them. This helps us to understand, in a unifying approach, how gravitation reveals itself in different branches of general relativity. This framework can be useful for general relativity university courses.

show abstract

Section: Fl Flsupporting

confidence: 90%

Unified approach to redshift in cosmological/black hole spacetimes and synchronous frame

Toporensky¹,

Заславский²,

Попов³

2017

Eur. J. Phys.

View full text Add to dashboard Cite

show abstract

Section: Behavior Of Wavelengthsupporting

confidence: 90%

Unified approach to redshift in cosmological /black hole spacetimes and synchronous frame

Toporensky,

Zaslavskii,

Popov

2017

Preprint

View full text Add to dashboard Cite

Usually, interpretation of redshift in static spacetimes (for example, near black holes) is opposed to that in cosmology. In this methodological note we show that both explanations are unified in a natural picture. This is achieved if, considering the static spacetime, one (i) makes a transition to a synchronous frame, and (ii) returns to the original frame by means of local Lorentz boost. To reach our goal, we consider a rather general class of spherically symmetric spacetimes. In doing so, we construct frames that generalize the well-known Lemaitre and Painlevé-Gullstand ones and elucidate the relation between them. This helps us to understand, in an unifying approach, how gravitation reveals itself in different branches of general relativity. This framework can be useful for general relativity university courses.

show abstract

“…( 1) by replacing the DM halo velocity contributions, v 2 dark , with the relative curvature convolution ṽ2 lcm . It has been shown in previous work (Cisneros et al 2015;Radosz et al 2013) that curvature effects can be phrased kinematically. The LCM prediction of the total observed shifted frequencies, ω interpreted via the LD, is then :…”

Section: Lorentz Kinematics and The Lcm Rotation Curve Formulamentioning

confidence: 93%

The Luminous Convolution Model for spiral galaxy rotation curves

Cisneros¹,

O’Brien²,

Oblath³

et al. 2015

Preprint

View full text Add to dashboard Cite

The Luminous Convolution Model (LCM) is an empirical formula, based on a heuristic convolution of Relativistic transformations, which makes it possible to predict the observed rotation curves of a broad class of spiral galaxies from luminous matter alone. Since the LCM is independent of distance estimates or dark matter halo densities, it is the first model of its kind which constrains luminous matter modeling directly from the observed spectral shifts of characteristic photon emission/absorption lines. In this paper we present the LCM solution to a diverse sample of twenty-five (25) galaxies of varying morphologies and sizes. For the chosen sample, it is shown that the LCM is more accurate than either Modified Newtonian Dynamics or dark matter models and returns physically reasonable mass to light ratios and exponential scale lengths. Unlike either Modified Newtonian Dynamics or dark matter models, the LCM predicts something which is directly falsifiable through improvements in our observational capacity, the luminous mass profile. The question, while interesting, of if the LCM constrains the relation of the baryonic to dark matter is beyond the scope of the current work.The focus of this paper is to show that it is possible to describe a broad and diverse spectrum of galaxies efficiently with the LCM formula. Moreover, since the LCM free parameter predicts the ratio of the Milky Way galaxy baryonic mass density to that of the galaxy emitting the photon, if the Milky Way mass models can be trusted at face values, we then show that the LCM becomes a zero parameter model. This paper substantially expands the results in arXiv:1309.7370 and arXiv:1407:7583.

show abstract

On the nature of cosmological redshift and spectral shift in Schwarzschild-like and other spacetimes

Cited by 6 publications

References 13 publications

Unified approach to redshift in cosmological/black hole spacetimes and synchronous frame

Unified approach to redshift in cosmological/black hole spacetimes and synchronous frame

Unified approach to redshift in cosmological /black hole spacetimes and synchronous frame

The Luminous Convolution Model for spiral galaxy rotation curves

Contact Info

Product

Resources

About