Afterglow candidate for GRB 030501

M.Boer, A. Klotz, J.L. Atteia

The TAROT telescope (http://tarot.cesr.fr) D=25 cm, observed the field of the GRB030501 less than 20 seconds after the GRB detected by INTEGRAL. An optical afterglow (prompt emission ?) candidate is well senn at the following coordinates :

RA = 19h05m37.9s
DEC = +6d18'51"
EQU = J2000.0

2003-05-01 : 03h10min37.60s to 03h11min07.60s Ut : m=15.0
2003-05-01 : 03h19min57.95s to 03h20min27.95s Ut : m=15.1

magnitudes are estimated from the GSC474326 star (assumed to be m=12.91 in V band)

12 other images between these two dates were also taken. They are currently analyzed. An accurate magnitude measurement is under process...

TAROT image which indicate the optical counterpart candidate (encircled).
Red square is 5 arcmin. Noth up and East left.

TAROT image

DSS1 image

DSS2 R image

25 images taken by TAROT:

Characteristics of the GRB :
==================================================================
TITLE:   GCN GRB OBSERVATION REPORT
NUMBER: 2183
SUBJECT: GRB030501 localized by INTEGRAL
DATE:    03/05/01 07:35:43 GMT
FROM:    Sandro Mereghetti at IASF/CNR <sandro@mi.iasf.cnr.it>

S. Mereghetti, D. Gotz, J. Borkowski on behalf of the IBAS Localization
Team, S. Shaw and T. Courvoisier on behalf the INTEGRAL Science Data
Centre and the INTEGRAL Science Working Team

report the detection of a GRB at 03:10:18 UTC at coordinates
RA 19h 05m 30s DEC +06deg 18' 26'' (J2000)
with an uncertainty of 3 arcmin radius.

The burst lasted about 40 seconds.
===================================================================