伽马射线暴是标准烛光吗?
天体物理学
2007-05-31 v1
摘要
通过将 48 个长伽马射线暴(GRBs)样本按红移从低到高分为四组,并用 Amati 关系 log Eiso = a + b log Epeak 对每组进行拟合,我发现参数 a 和 b 随各组 GRBs 的平均红移发生系统且显著的变化。结果表明 GRBs 随宇宙红移强烈演化,因此它们不是标准烛光。
关键词
引用
@article{arxiv.0705.4401,
title = {Are Gamma-Ray Bursts Standard Candles?},
author = {Li-Xin Li},
journal= {arXiv preprint arXiv:0705.4401},
year = {2007}
}
评论
4 pages, including 4 figures. To appear in the proceedings of "070228: The Next Decade of GRB afterglows", Amsterdam, 19-23 March 2007