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首页> 外文期刊>International Journal of Physics >The Flat Rotation Curve of the Spiral Galaxies may be the Result of the Perfect Combination of the Fluid Mechanics and the Gravitational Mechanics
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The Flat Rotation Curve of the Spiral Galaxies may be the Result of the Perfect Combination of the Fluid Mechanics and the Gravitational Mechanics

机译：螺旋星系的平坦旋转曲线可能是流体力学和引力力学完美结合的结果

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A new hypothesis is proposed to explain the flat rotation curve of the spiral galaxies. The spiral galaxies can be treated as ideal fluid systems. For Milky Way, the mass density is constant within the radius of 0.65 kpc in the central portion of the bugle and results the linear relationship between the rotation velocity and the distance to the galactic center. The rotation of the spiral galaxies is driven by the central galactic bars and follows both fluid mechanics and gravitational mechanics, the flat rotation curve of the spiral galaxies is the result of the perfect combination of the fluid mechanics and the gravitational mechanics, the nature has balanced itself very well, the mass density distribution indirectly extracted from NASA’s near-infrared image of the Milky Way seems matching the hypothesis. Therefore, the “dark matter” could be unnecessary for the purpose of adding additional gravitational matter, but this does not deny the possible existence of the proposed dark matter in the universe. The feature of the flat rotation curve could be established during the formation of the galaxies from vast clouds of gas and dust, then, is maintained by gravitational force among those celestial objects, gases and interstellar medium, and such gravitational force acts as a binding force and fluid viscosity. After galactic merging, the combination of the fluid mechanics and gravitational mechanics is the only way to restore the galaxies into nice symmetric disk-like morphology with flat feature of the rotation curve after enough evolution time. The super black holes in the centers of the galaxies could be the rotation engines for whole rotation of galaxies. This model may not be perfect and could be improved in the future.
机译：提出了一个新的假设来解释螺旋星系的平坦旋转曲线。旋涡星系可以视为理想的流体系统。对于银河系，在号角中央部分的质量密度在0.65 kpc的半径范围内是恒定的，并导致旋转速度与到银河系中心的距离之间呈线性关系。旋涡星系的旋转是由中央银河星条带动的，并遵循流体力学和引力力学，螺旋星系的平坦旋转曲线是流体力学和引力力学完美结合的结果，自然平衡了。从美国国家航空航天局（NASA）的银河系近红外图像中间接提取的质量密度分布本身就非常符合假设。因此，出于添加其他引力物质的目的，“暗物质”可能是不必要的，但这并不否认提议的暗物质可能存在于宇宙中。可以在由巨大的气体和尘埃云形成星系的过程中建立平坦旋转曲线的特征，然后由这些天体，气体和星际介质之间的引力来保持这种引力，而引力则起着约束力的作用。和流体粘度。在银河合并之后，流体力学和重力力学的结合是在足够的演化时间之后将星系恢复为具有旋转曲线平坦特征的对称对称盘状形态的唯一方法。星系中心的超黑洞可能是整个星系旋转的旋转引擎。该模型可能并不完美，将来可能会改进。

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