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arXiv 1102.3913astro-ph.COgr-qchep-ph
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修正牛顿动力学的富气Galerkin实验

A Novel Test of the Modified Newtonian Dynamics with Gas Rich Galaxies

Stacy S. McGaugh

摘要:

当前的宇宙学范式LCDM要求宇宙的质能由不可见的成分主导:暗物质和暗能量。对这些黑暗成分的一种替代方法是在相关尺度上修改引力定律。重子塔利-费雪关系(BTFR)提供了对这些想法的检验,BTFR是观测到的星系质量与其自转速度之间的经验关系。在这里,我报告一个测试,使用气体丰富的星系,两个轴的BTFR可以独立测量的理论正在测试,没有系统的不确定性,影响相同的测试与恒星为主的螺旋恒星质量。数据准确地落在修正牛顿动力学(MOND)的先验预测。BTFR的分散完全归因于观测的不确定性。这是一个单一的有效力法的行动是一致的,但提出了一个严重的微调问题LCDM。

英文摘要:

The current cosmological paradigm, LCDM, requires that the mass-energy of the universe be dominated by invisible components: dark matter and dark energy. An alternative to these dark components is that the law of gravity be modified on the relevant scales. A test of these ideas is provided by the Baryonic Tully-Fisher Relation (BTFR), an empirical relation between the observed mass of a galaxy and its rotation velocity. Here I report a test using gas rich galaxies for which both axes of the BTFR can be measured independently of the theories being tested and without the systematic uncertainty in stellar mass that affects the same test with star dominated spirals. The data fall precisely where predicted a priori by the modified Newtonian dynamics (MOND). The scatter in the BTFR is attributable entirely to observational uncertainty. This is consistent with the action of a single effective force law but poses a serious fine-tuning problem for LCDM.

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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