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1998 May 08 (M3.1)

A GOES M3.1 solar flare occurred on 1998 May 08. The location of the flare on the Solar surface is not known due to lack of an accompanying H-alpha event. The soft X-ray flux began at 1:49 (6540 s), peaked at 2:04 (7440 s) and ended at 2:17 8220 s) UT (GOES Geophysical Data Web Site). At the time of the flare, OSSE was already observing the Sun and received a BATSE transient trigger at 7013 s UT.

Significant emission up to about 300 keV was observed for about 150 seconds (7010 - 7165 s). Count rate time profiles in various energy windows at a temporal resolution of ~8 s are shown in Figure 1. A representative count spectrum is shown in Figure 2. The total fluence above 50 keV was 398 +/- 4 photons cm-2.

Figure 1

Figure 2

Last revised: 11 Dec 1997