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GCN Circular 6989

Subject
GRB 071025a: PAIRITEL observations
Date
2007-10-25T05:07:57Z (16 years ago)
From
Josh Bloom at UC Berkeley <jbloom@astron.berkeley.edu>
J. S. Bloom (UC Berkeley) reports on behalf of a larger collaboration:

"Under autonomous operations, we started observing the position of  
GRB 071025a (Pagani et al. GCN 6986) with PAIRITEL at 04:11:08 UT  
(about 58s after receiving the trigger).  In a mosaic of data  
obtained between 2007-10-25 04:12:28 to 2007-10-25 04:21:23 UT, we  
confirm the existence of a bright new source (Rykoff et al. GCN 6987;  
Covino et al. GCN 6988) at position:

       23:40:17.078 +31:46:42.87 (J2000)

with an uncertainty of 250 mas in both axes (relative to 2MASS).  A  
preliminary magnitude is J = 14.948 +/- 0.022. More observations and  
analysis are ongoing."

A finder of the field may be obtained at:
   http://lyra.berkeley.edu/~jbloom/grb071025a.ps.gz

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