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GCN Circular 18400

Subject

GRB 151006A: Kanata/HOWPol optical imaging polarimetry

Date

2015-10-06T11:05:12Z (9 years ago)

From

Koji Kawabata at HASC,Hiroshima U <kawabtkj@hiroshima-u.ac.jp>

K. S. Kawabata, R. Itoh, M. Kawabata, T. Nakaoka, H. Mori, K. Takaki (Hiroshima 
Univ.), and R. Shimotani (Kagawa Univ.) report on behalf of Kanata team:

We performed a series of optical imaging-polarimetry for the optical afterglow 
of GRB151006A (Kocevski et al., GCN 18398Not found
 
 
) from 73 sec after the Swift/BAT 
trigger with HOWPol attached to the 1.5-m Kanata telescope at Higashi-Hiroshima
Observatory, Japan.

We could not detect any afterglow within the XRT error circle reported in the 
GCN 18398Not found
 
 
. We obtained the following preliminary upper limits in our first 
image (mid-time 88 sec after the trigger) calibrated with UCAC4:

Rc > 17.7

Further analysis is ongoing.