{"paper":{"title":"Probing the Nature of High-z Short GRB 090426 with Its Early Optical and X-ray Afterglows","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.HE","authors_text":"Bing Zhang, Enwei Liang, Houjun Lv, Huali Li, Jianyan Wei, Jing Wang, Jingyao Hu, Jinsong Deng, Kuiyun Huang, Liping Xin, Myungshin Im, Weikang Zheng, Xuhui Han, Yiseul Jeon, Yuji Urata, Yulei Qiu","submitted_at":"2010-02-04T04:56:25Z","abstract_excerpt":"GRB 090426 is a short duration burst detected by Swift ($T_{90}\\sim 1.28$ s in the observer frame, and $T_{90}\\sim 0.33$ s in the burst frame at $z=2.609$). Its host galaxy properties and some $\\gamma$-ray related correlations are analogous to those seen in long duration GRBs, which are believed to be of a massive-star origin (so-called Type II GRBs). We present the results of its early optical observations with the 0.8-m TNT telescope at Xinglong observatory, and the 1-m LOAO telescope at Mt. Lemmon Optical Astronomy Observatory in Arizona. Our well-sampled optical afterglow lightcurve covers"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.0889","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}