标题： 多云袋状奇异星的冷却性质 显示英文标题

标题： Cooling Properties of Cloudy Bag Strange Stars

摘要： 由于手征对称性被广泛认为是强相互作用动力学的重要驱动力，基于MIT袋模型的当前奇异星模型并不遵守这种对称性。 我们使用云袋模型研究裸奇异星的性质，在该模型中引入了与夸克限制口袋耦合的π介子云，从而保证了手征对称性。 我们发现在这个模型中，π介子的衰变是一种非常有效的冷却方式。 事实上，它可以在几毫秒内带走大部分热能，并通过π介子衰变直接转化为100MeV光子。 这可能是一种非常有效的$\gamma$-射线爆发机制。 此外，冷却行为可能为观测中区分中子星、MIT奇异星和云袋奇异星提供了一种可能的方法。 显示英文摘要

摘要： As the chiral symmetry is widely recognized as an important driver of the strong interaction dynamics, current strange stars models based on MIT bag models do not obey such symmetry. We investigate properties of bare strange stars using the Cloudy Bag Model, in which a pion cloud coupled to the quark-confining bag is introduced such that chiral symmetry is conserved. We find that in this model the decay of pions is a very efficient cooling way. In fact it can carry out most the thermal energy in a few milliseconds and directly convert them into 100MeV photons via pion decay. This may be a very efficient $\gamma$-ray burst mechanism. Furthermore, the cooling behavior may provide a possible way to distinguish a compact object between a neutron star, MIT strange star and Cloudy Bag strange star in observations.