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arXiv 1907.04501astro-ph.GA
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光环加速度关系

Halo Acceleration Relation

Yong Tian, Chung-Ming Ko

摘要:

最近,McGaugh等人(2016)根据新的Spitzer光度测量和精确旋转曲线数据,报道了在螺旋星系中观测到的总加速度和重子产生的加速度之间的紧密径向加速度关系(RAR)。这种关系可以用不同的函数来拟合。然而,这些功能可以被识别,如果我们表示的数据在晕加速关系(HAR)的形式。数据显示光晕加速度最大。我们研究了NFW(尖点)和Burkert(核心)配置文件的背景下,暗物质和不同的参数家庭的插值函数的框架内的修正牛顿动力学(MOND)。

英文摘要:

Recently, from the new Spitzer Photometry and Accurate Rotation Curves (SPARC) data, McGaugh et al. (2016) reported a tight Radial Acceleration Relation (RAR) between the observed total acceleration and the acceleration produced by baryons in spiral galaxies. The relation can be fitted by different functions. However, these functions can be discerned if we express the data in the form of halo acceleration relation (HAR). The data reveals a maximum in the halo acceleration. We examined NFW (cusp) and Burkert (core) profiles in the context of dark matter and different parameter families of the interpolating function in the framework of Modified Newtonian Dynamics (MOND).

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