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Radiative wind from a luminous star cluster

机译:来自发光星座的辐射风

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We reexamine the steady spherical wind from distributed sources, such as star clusters and a galactic center, taking into account the radiative force from distributed sources and mass reduction via orbital motions. We consider a cold dusty wind, an isothermal gaseous flow, and a nonisothermal general one without/with a central mass and a stagnation radius for various powers of source distributions. We perform singular point analysis for each case, and obtain a transonic solution, if one exists. We find that thermally driven outflows can emerge in limited situations, such that the source distribution is rather steep in the isothermal flow. On the other hand, under the appropriate conditions radiatively driven winds can easily be produced. Radiative cluster winds without a central mass could emerge from newly born star clusters or neutron star clusters, whereas those with a central mass could appear from active galactic nuclei. Radiative cluster winds would also operate in first star clusters.
机译:我们重新检查了来自分布式源(如星团和星系中心)的稳定球形风,考虑了来自分布式源的辐射力和通过轨道运动减少的质量。我们认为冷尘埃风,等温气态流,和非等温一般的没有/具有中心质量和停滞半径的各种功率的源分布。我们对每种情况进行奇点分析,如果存在跨音速解,则得到跨音速解。我们发现,热驱动的外流可以在有限的情况下出现,因此在等温流动中,源分布相当陡峭。另一方面,在适当的条件下,很容易产生辐射驱动的风。无中心质量的辐射星团风可能来自新生的星团或中子星团,而有中心质量的辐射星团风可能来自活动星系核。辐射星团风也会在第一个星团中运行。

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