宇宙学模拟中长伽马射线暴起源的性质
Properties of Long Gamma Ray Burst Progenitors in Cosmological Simulations
摘要:
利用结构形成和星系演化的宇宙学模拟研究了长伽马射线暴(LGRB)的起源。LGRB是早期宇宙中恒星演化的潜在示踪剂。我们开发了一个蒙特卡罗数值代码,产生耦合到宇宙学模拟的LGRB。这些模拟使我们能够自洽地跟踪星系的运动。我们模拟的LGRB和它们的宿主星系的可探测性,以便与高能卫星获得的观测数据的结果进行比较。我们的代码还包括在观测到的LGRB率的随机效应。
英文摘要:
We study the nature of long gamma ray burst (LGRB) progenitors using cosmological simulations of structure formation and galactic evolution. LGRBs are potentially excellent tracers of stellar evolution in the early universe. We developed a Monte Carlo numerical code which generates LGRBs coupled to cosmological simulations. The simulations allows us to follow the ormation of galaxies self-consistently. We model the detectability of LGRBs and their host galaxies in order to compare results with observational data obtained by high-energy satellites. Our code also includes stochastic effects in the observed rate of LGRBs.
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