论文标题
首次尝试通过星系旋转曲线区分修饰的重力和修饰的惯性
A first attempt to differentiate between modified gravity and modified inertia with galaxy rotation curves
论文作者
论文摘要
星系尺度上修饰的牛顿动力学（MOND）的现象学可能指出了更基本的重力（MG）或修饰惯性（MI）的基本理论。在本文中，我们测试了全球深色参数$ Q $的适用性，该参数$ Q $预计在MG和MI理论之间的$ 10 \％$级别变化。使用模拟的磁盘星系分析模型，我们研究了几种观察性不确定性，为实际星系建立了一系列质量要求，并在确定$ Q $的确定中得出了系统的校正。对SPARC数据库实施我们的质量要求会产生$ 15 $的星系，它们足够接近Deep-Mond政权，并且具有足够扩展和采样的旋转曲线。对于这些星系，$ Q $的平均值和中位数似乎有利于MG理论，但尽管MG和MI预测都与$1.5σ$之间的数据一致。可以通过测量延长和精细采样的旋转曲线来确定$ Q $的确定精度，以获得极低的低表面 - 亮度星系的大量样本。
The phenomenology of modified Newtonian dynamics (MOND) on galaxy scales may point to more fundamental theories of either modified gravity (MG) or modified inertia (MI). In this paper, we test the applicability of the global deep-MOND parameter $Q$ which is predicted to vary at the $10\%$ level between MG and MI theories. Using mock-observed analytical models of disk galaxies, we investigate several observational uncertainties, establish a set of quality requirements for actual galaxies, and derive systematic corrections in the determination of $Q$. Implementing our quality requirements to the SPARC database yields $15$ galaxies, which are close enough to the deep-MOND regime as well as having rotation curves that are sufficiently extended and sampled. For these galaxies, the average and median values of $Q$ seem to favor MG theories, albeit both MG and MI predictions are in agreement with the data within $1.5σ$. Improved precision in the determination of $Q$ can be obtained by measuring extended and finely-sampled rotation curves for a significant sample of extremely low-surface-brightness galaxies.
