BeppoSAX Alert: GB980425: Preliminary results from BeppoSAX NFI follow up

ATel #14; Editor
on 28 Apr 1998; 16:50 UT
Distributed as an Instant Email Notice Gamma-Ray Bursts
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Further to ATEL #12, #13, I received the following:

BeppoSAX GRB MAIL N. 98/11
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GB980425: Preliminary results from BeppoSAX NFI follow up

The BeppoSAX Wide Field Camera error box of GRB 980425 (IAUC # 6884 ) was observed with the BeppoSAX Narrow Field Instruments (NFI) starting about 10.0 hrs after the burst. Preliminary analysis of the first 27 hr shows a previously unknown x-ray source in the MECS and LECS at:

R.A. = 19h35m04s
Decl. = -52o48'34''

(equinox 2000.0)with an error radius of 1'.

This position is 2'.0 from the centroid of the WFC position.

The source did not significantly fade during the observation. The average flux (2-10 keV)was a few x 10E-13 c.g.s. Further BeppoSAX observations are already planned to monitor the behavior of the source and to establish its association with GRB980425.

Luigi Piro
BeppoSAX Mission Scientist