Abstract
Abstract We developed a catalog of solar flares in the hard X-ray band observed with the Wide-band All-sky Monitor (WAM) onboard the Suzaku satellite between 2005 July and 2009 November. During this period, 105 solar flares (GOES class X: 13, M: 29, C: 47, B: 16) were detected with WAM, including 10% of GOES-class C events reported during the same period. The observed photon flux ranged between 9 $\times$ 10$^{-5}$ and 9 $\times$ 10$^{-1}\ $photons s$^{-1}\ $cm$^{-2}\ $keV$^{-1}\ $ at 100 keV. The averaged hard X-ray spectrum for each solar flare was evaluated for 70 of the 105 events, and 43 of them were well fitted with a single power-law model with a photon index ranging between $-$7 and $-$3. We observed a weak trend where events with longer durations exhibited harder spectral slopes.
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