Thermal evolution and light curves of young bare strange stars.
Thermal evolution and light curves of young bare strange stars.
复制标题
年轻裸露奇异恒星的热演化和光变曲线。
作者：
D. Page;V. Usov
我们用数值方法研究了一颗年轻的裸奇异星的冷却过程，并表明它的热光度，主要是由于夸克表面产生的e(+)e（-）对，可能远远高于爱丁顿极限。远离奇异恒星的光子的平均能量大约是10(2)keV，甚至更多。这在质量和数量上都与中子星的热辐射不同，并为裸奇怪恒星提供了明确的观测特征。结果表明，超导夸克物质的能隙在大约0.5 MeV到几MeV的范围内，可以由光曲线估计出来。
We study numerically the cooling of a young bare strange star and show that its thermal luminosity, mostly due to e(+)e(-) pair production from the quark surface, may be much higher than the Eddington limit. The mean energy of photons far from the strange star is approximately 10(2) keV or even more. This differs both qualitatively and quantitatively from the thermal emission from neutron stars and provides a definite observational signature for bare strange stars. It is shown that the energy gap of superconducting quark matter may be estimated from the light curves if it is in the range from approximately 0.5 MeV to a few MeV.