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arXiv 1905.07565gr-qc
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通过引力时间推进探测暗物质和暗能量

Probing dark matter and dark energy through Gravitational Time Advancement

Samrat Ghosh, Arunava Bhadra, Amitabha Mukhopadhyay

摘要:

得到了史瓦西几何中质量非零粒子的引力时间推进(负时滞)表达式。研究了描述旋涡星系自转曲线的引力场和暗能量(以宇宙学常数的形式)对粒子时间推进的影响。目前的研究结果表明,在存在暗物质引力场的情况下,时间推进可能发生的引力场的观察者无关,不像纯史瓦西几何的情况下,引力时间推进发生时,观察者是位于更强的引力场相比,引力场遇到的粒子在其旅程。当应用于SN 1987 a的情况时,发现光子/引力波的净时间延迟比文献中引用的要小得多。在存在暗物质场的情况下,SN 1987 a的光子和中微子应该受到引力时间的推进而不是延迟。

英文摘要:

The expression of gravitational time advancement (negative time delay) for particles with non-zero mass in Schwarzschild geometry has been obtained. The influences of the gravitational field that describes the observed rotation curves of spiral galaxies and that of dark energy (in the form of cosmological constant) on time advancement of particles have also been studied. The present findings suggest that in presence of dark matter gravitational field the time advancement may take place irrespective of gravitational field of the observer, unlike the case of pure Schwarzschild geometry where gravitational time advancement takes place only when the observer is situated at stronger gravitational field compare to the gravitational field encountered by the particle during its journey. When applied to the well known case of SN 1987a, it is found that the net time delay of a photon/gravitational wave is much smaller than quoted in the literature. In the presence of dark matter field, the photon and neutrinos from SN 1987a should have been suffered gravitational time advancement rather than the delay.

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