Über den Zusammenhang zwischen Rotverschiebung und scheinbarer Helligkeit

Mattig, W.

doi:10.1002/asna.19572840303

Cited by 164 publications

(103 citation statements)

References 4 publications

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“…We note that throughout this paper we calculate luminosity and angular diameter distances as follows : For the two models, we use the standard exact form due to ) " \ 0 Mattig (1958). For the model with nonzero we use the ) " , approximate form derived by Pen (1999).…”

Section: A Model For the Cluster Populationmentioning

confidence: 99%

A Serendipitous Galaxy Cluster Survey withXMM: Expected Catalog Properties and Scientific Applications

Romer

Viana

Liddle

et al. 2001

ApJ

166

199

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This paper describes a serendipitous galaxy cluster survey that we plan to conduct with the XMM X-ray satellite. We have modeled the expected properties of such a survey for three di †erent cosmological models, using an extended Press-Schechter formalism combined with a detailed characterization of the expected capabilities of the European Photon Imaging Camera (EPIC) camera on board XMM. We estimate that, over the 10 yr design lifetime of XMM, the EPIC camera will image a total of^800 deg2 in Ðelds suitable for the serendipitous detection of clusters of galaxies. For the presently favored low-density model with a cosmological constant, our simulations predict that this survey area would yield a catalog of more than 8000 clusters, ranging from poor to very rich systems, with around 750 detections above z \ 1. A low-density open universe yields similar numbers, though with a di †erent redshift distribution, while a critical-density universe gives considerably fewer clusters. This dependence of catalog properties on cosmology means that the proposed survey will place strong constraints on the values of and The survey would also facilitate a variety of follow-up projects, including the quan-) 0 ) " . tiÐcation of evolution in the cluster X-ray luminosity-temperature relation, the study of high-redshift galaxies via gravitational lensing, follow-up observations of the Sunyaev-Zeldovich e †ect, and foreground analyses of cosmic microwave background maps.

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Section: A Model For the Cluster Populationmentioning

confidence: 99%

A Serendipitous Galaxy Cluster Survey withXMM: Expected Catalog Properties and Scientific Applications

Romer

Viana

Liddle

et al. 2001

ApJ

166

199

View full text Add to dashboard Cite

show abstract

“…Analytical expression for the observable area distance for GR with no cosmological constant can be found in [5,8,9], whereas for more general scenarios numerical integration is usually required. In the next section, the numerical analysis also will be performed in order to find the deviation vector η(z) and observer area distance r 0 (z) and compare the results have been found in f (R, T ) Jordan frame with those ΛCDM model.…”

Section: A Geodesic Deviation Equation For the Flrw Universementioning

confidence: 99%

“…The importance of the geodesic deviation equation (GDE) for spinless particles is studied by the authors [6], [7], and they certify its importance when we study gravitational wave phenomena and their detection. The geodesic deviation equation (GDE) provides an elegant tool to investigate the timelike, null and spacelike structure of spacetime geometries and the important Raychaudhuri equation [8], the Mattig relation [9] and the Pirani equation [10] may be obtained by solving it. Recent observations of the supernovae type Ia (SNe Ia) [11], the cosmic microwave background radiation (CMBR) [12], the baryon acoustic oscillation (BAO) surveys [13], the large scale structure [14] and the weak lensing [15], clearly indicate that the Universe is currently expanding with an accelerating rate.…”

Section: Introductionmentioning

confidence: 99%

Geodesic deviation equation in f(R, T) gravity

Baffou¹,

Houndjo²,

Rodrigues³

et al. 2017

Chinese Journal of Physics

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In this paper, we investigate the modified Geodesic Deviation Equation (GDE) in the framework of f (R, T ) theory of gravity where R and T are the curvature scalar and the trace of the energymomentum tensor, respectively, using the FLRW background. In this way, we obtain the GR equivalent (GDE) in f (R, T ) metric formalism. We also extend our work to the generalization of the Mattig relation and perform the numerical analysis with GDE for null vector.

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“…Only the luminosity or redshift distance is appropriate, he says, not the comoving distance and not another sort whose source he does not cite. Angular diameter and parallax-type distances are different yet again, and also inappropriate in models more complex than Einstein-de Sitter, where several are degenerate (Mattig 1958). Well, it may be so.…”

Section: Very (And Not So Very) Large Scale Structure and Streamingmentioning

confidence: 99%

Astrophysics in 2005

Trimble

Aschwanden

Hansen

2006

PUBL ASTRON SOC PAC

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ABSTRACT. We bring you, as usual, the Sun and Moon and stars, plus some galaxies and a new section on astrobiology. Some highlights are short (the newly identified class of gamma-ray bursts, and the Deep Impact on Comet 9P/Tempel 1), some long (the age of the universe, which will be found to have the Earth at its center), and a few metonymic, for instance the term "down-sizing" to describe the evolution of star formation rates with redshift.

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Über den Zusammenhang zwischen Rotverschiebung und scheinbarer Helligkeit

Cited by 164 publications

References 4 publications

A Serendipitous Galaxy Cluster Survey withXMM: Expected Catalog Properties and Scientific Applications

A Serendipitous Galaxy Cluster Survey withXMM: Expected Catalog Properties and Scientific Applications

Geodesic deviation equation in f(R, T) gravity

Astrophysics in 2005

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