| タイトル | Identifying the Location in the Host Galaxy of Short GRB 1111l7A with the Chandra Sub- Arcsecond Position |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120015547 |
| 著者（英） | Leloudas, G.; Troja, E.; Fynbo, J. P. U.; deUgartePostigo, A.; DAvanzo, P.; Aoki, K.; Malesani, D.; Sanchez-Ramirez, R.; Gorosabel, J.; Anderson, M. I.; Sakamoto, Takanori; Guiriec, S.; Im, M.; Urata, Y.; Xu, D.; Melandri, A.; Aoki, K. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 2012-01-01 |
| 言語 | eng |
| 内容記述 | We present our successful program using Chandra for identifying the X-ray afterglow with sub-arcsecond accuracy for the short GRB 111117A d iscovered by Swift and Fermi. Thanks to our rapid target of opportuni ty request, Chandra clearly detected the X-ray afterglow, whereas no optical afterglow was found in deep optical observations. Instead, we clearly detect the host galaxy in optica; and also in near-infrared b ands. We found that the best photometric redshift fitofthe host is z = 1.31:(+0.46/-0.23) (90% confidence), making it one of the highest redshift short GRBs. Furthermore, we see an offset of 1.0+/-O.2 arcseco nds, which corresponds to 8.4+/-1.7 kpc aSBuming z= 1.31, between the host and the afterglow position. We discuss the importance of using Chandra for obtaining sub-arcsecond localization of the afterglow in X -rays for short GRBs to study GRB environments in great detail. |
| NASA分類 | Astronomy |
| レポートNO | GSFC.JA.7136.2012 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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