Photometry of GRB 071025

We present observations and analysis of the broad-band afterglow of Swift GRB 071025. Using optical and infrared (RIYJHK) photometry, we derive a photometric redshift of 4.4本研究针对雨燕卫星（Swift）探测到的伽马射线暴（Gamma-Ray Burst，GRB）071025的宽波段余辉开展观测与分析。通过光学与红外（RIYJHK）测光（photometry）数据，我们推导得到该暴的测光红移（photometric redshift）为4.4。