Strange stars with different quark mass scaling
Strange stars with different quark mass scaling
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DOI：
10.1111/j.1365-2966.2009.16091.x
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发表时间：
2009-05
期刊：
影响因子：
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通讯作者：
Ang Li;R. Xu;Ju-fu Lu
中科院分区：
文献类型：
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作者：
Ang Li;R. Xu;Ju-fu Lu
我们在广泛的夸克质量标度范围内研究奇异夸克物质的稳定性以及相应奇异恒星的性质。计算表明，对于此处选择的所有缩放比例，所得的最大质量始终位于 1.5M_{sun} 和 1.8M_{sun} 之间。具有线性标度的奇异星序列将支持较小的引力质量，并且围绕线性标度的标度变化（增加或减少）将导致更高的最大质量。半径总是随着质量缩放而减小。那么尺度越大，恒星旋转的速度就越快。此外，尺度的变化会导致夸克表面强电场发生数量级的变化，这对于支持奇异恒星可能的地壳抵抗重力至关重要，并可能产生一些天体物理学意义。
We investigate the stability of strange quark matter and the properties of the cor- responding strange stars, within a wide range of quark mass scaling. The calculation shows that the resulting maximum mass always lies between 1.5M_{sun} and 1.8M_{sun} for all the scalings chosen here. Strange star sequences with a linear scaling would sup- port less gravitational mass, and a change (increase or decrease) of the scaling around the linear scaling would lead to a higher maximum mass. Radii invariably decrease with the mass scaling. Then the larger the scaling, the faster the star might spin. In addition, the variation of the scaling would cause an order of magnitude change of the strong electric field on quark surface, which is essential to support possible crusts of strange stars against gravity and may then have some astrophysical implications.