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arXiv 1603.04063gr-qcastro-ph.CO
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暗能量和平坦转动曲线对非零质量粒子引力时滞的影响

Effects of dark energy and flat rotation curve on the gravitational time delay of particle with non-zero mass

Tamal Sarkar, Shubhrangshu Ghosh, Arunava Bhadra

摘要:

研究了几种暗能量模型对非零质量粒子引力时滞的影响,得到了一阶精度下的解析表达式。在共形引力势的影响下,导出了能很好地描述旋涡星系平坦自转曲线的引力时滞表达式。研究结果表明:i)与正常暗物质的影响相比,暗物质的共形引力描述减少了净时间延迟,因此原则上可以使用引力时间延迟观测来区分模型; ii)暗能量的影响/平坦的旋转曲线可以通过对涉及兆秒差距和超越距离尺度的粒子引力时间延迟的高精度测量来揭示。

英文摘要:

The effects of several dark energy models on gravitational time delay of particles with non-zero mass are investigated and analytical expressions for the same are obtained at the first order accuracy. Also the expression for gravitational time delay under the influence of conformal gravity potential that well describes the flat rotation curve of spiral galaxies is derived. The findings suggest that i) the conformal gravity description of dark matter reduces the net time delay in contrast to the effect of normal dark matter and therefore in principle the models can be discriminated using gravitational time delay observations and ii)the effect of dark energy/flat rotation curve may be revealed from high precision measurements of gravitational time delay of particles involving megaparsec and beyond distance-scale.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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