{"paper":{"title":"\"Dark\" GRB 080325 in a Dusty Massive Galaxy at z ~ 2","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.GA","authors_text":"A. Tajitsu, A. Yoshida, G. Kosugi, H. Furusawa, H. Terada, I. Tanaka, J. Noumaru, J. Watanabe, K. Aoki, K. Nomoto, K. Ohta, K. Sekiguchi, K. S. Kawabata, K. Yabe, M. Iye, M. Suzuki, N. Kawai, N. Kobayashi, R. Ogasawara, T. Hashimoto, T. Hattori, T. Sakamoto, T.-S. Pyo, T. Takata, T. Tamagawa, T. Totani, T. Yamada, W. Aoki, Y. Komiyama, Y. Minowa, Y. Mizumoto, Y. Niino, Y. Shirasaki","submitted_at":"2010-03-19T05:50:59Z","abstract_excerpt":"We present optical and near infrared observations of GRB 080325 classified as a \"Dark GRB\". Near-infrared observations with Subaru/MOIRCS provided a clear detection of afterglow in Ks band, although no optical counterpart was reported. The flux ratio of rest-wavelength optical to X-ray bands of the afterglow indicates that the dust extinction along the line of sight to the afterglow is Av = 2.7 - 10 mag. This large extinction is probably the major reason for optical faintness of GRB 080325. The J - Ks color of the host galaxy, (J - Ks = 1.3 in AB magnitude), is significantly redder than those "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1003.3717","kind":"arxiv","version":2},"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"}