Effect of T-593, a new H2-blocker, on itragastric pH.

Inoue, Mizue; Shimatani, Tomohiko; Horikawa, Yoshiki; Kawai, Yasukazu; Tao, C.; Kajiama, G.; Tamaki, Koga; Kimura, Samuel J.; Nakamura, Mitsuki; Mieno, Hiroyoshi; Shirakawa, Toshiro; Yokoa, H.

doi:10.1016/s0016-5085(98)80638-0

Cited by 9 publications

(22 citation statements)

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“…As in section II, in order to analyze cosmic parallax we need to find null geodesics in the spacetime that connect an observer and various sources at two different times. Letting latin indices run over 1, 2, 3 and (x 0 , x 1 , x 2 , x 3 ) = (t, x, y, z), the non-zero Christoffel symbol components for the Bianchi-I metric in (13) are…”

Section: Geodesics and Cosmic Parallax In Axisymmetric Bianchi-i mentioning

confidence: 99%

“…It is convenient therefore to begin by studying toy models. One class of these that has shown some promise in this direction are the Lemaitre-Tolman-Bondi (LTB) metrics, in which we are assumed to live inside a spherically symmetric underdense region of spacetime (or "void") embedded in an otherwise spatially flat and homogeneous Einstein-de Sitter universe [9,10,11,12,13,14,15]. Such a spacetime is manifestly inhomogeneous, due to the void, and on its own violates any strong version of the Copernican principle, since we must live inside this void in order to account for the observed supernovae dimming.…”

Section: Introductionmentioning

confidence: 99%

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Can cosmic parallax distinguish between anisotropic cosmologies?

2009

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In an anisotropic universe, observers not positioned at a point of special symmetry should observe cosmic parallax -the relative angular motion of test galaxies over cosmic time. It was recently argued that the non-observance of this effect in upcoming precision astrometry missions such as Gaia may be used to place strong bounds on the position of off-center observers in a voidmodel universe described by the Lemaitre-Tolman-Bondi metric. We consider the analogous effect in anisotropic cosmological models described by an axisymmetric homogeneous Bianchi type I metric and discuss whether any observation of cosmic parallax would distinguish between different anisotropic evolutions.

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Section: Geodesics and Cosmic Parallax In Axisymmetric Bianchi-i mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Can cosmic parallax distinguish between anisotropic cosmologies?

2009

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“…One of the Cosmic Microwave Background (CMB) anomalies identified in the WMAP [1] data is the socalled Cold Spot [2,3]: a spherical region on an angular scale of about 10 • that appears to be anomalously cold and whose probability to come from a flat spectrum of Gaussian primordial fluctuations is estimated to be about 1% − 2%. While this could still be due to a statistical fluke (or a fortuitous choice of using a particular basis of weight functions [4]), some authors [5,6] have put forward the idea that it could be due to an anomalously large underdense region of some unknown origin -called a "Void" for short -located on the line-of-sight between us and the Last Scattering Surface (LSS). Subsequent papers [7][8][9] have shown that other Voids of O(100) Mpc/h radius seem to be detected, via the correlation between CMB and galaxy surveys, through the Integrated Sachs-Wolfe (ISW) effect, and that this would be at odds with the concordance ΛCDM model.…”

Section: Introductionmentioning

confidence: 99%

Detecting the cold spot as a void with the non-diagonal two-point function

Masina

Notari

2010

J. Cosmol. Astropart. Phys.

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The anomaly in the Cosmic Microwave Background known as the "Cold Spot" could be due to the existence of an anomalously large spherical (few hundreds Mpc/h radius) underdense region, called a "Void" for short. Such a structure would have an impact on the CMB also at high multipoles ℓ through Lensing. This would then represent a unique signature of a Void. Modeling such an underdensity with an LTB metric, we show that the Lensing effect leads to a large signal in the non-diagonal two-point function, centered in the direction of the Cold Spot, such that the Planck satellite will be able to confirm or rule out the Void explanation for the Cold Spot, for any Void radius with a Signal-to-Noise ratio of at least O(10).

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“…The first breakthrough came last year when Inoue found the 14 lowest eigenmodes of the Thurston space [10] using a numerical method [11] originally developed for 2dimensional manifolds. By refining the method and using a more powerful computer, Inoue extended the count to include the first 36 eigenmodes.…”

mentioning

confidence: 99%

A small universe after all?

Cornish

Spergel

2000

Phys. Rev. D

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The cosmic microwave background radiation allows us to measure both the geometry and topology of the universe. It has been argued that the COBE-DMR data already rule out models that are multiply connected on scales smaller than the particle horizon. Here we show the opposite is true: compact (small) hyperbolic universes are favoured over their infinite counterparts. For a density parameter of Omega_o=0.3, the compact models are a better fit to COBE-DMR (relative likelihood ~20) and the large-scale structure data (sigma_8 increases by ~25%).Comment: 4 pages, RevTeX, 7 Figure

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Effect of T-593, a new H2-blocker, on itragastric pH.

Cited by 9 publications

References 0 publications

Can cosmic parallax distinguish between anisotropic cosmologies?

Can cosmic parallax distinguish between anisotropic cosmologies?

Detecting the cold spot as a void with the non-diagonal two-point function

A small universe after all?

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