Upper panel: long-term X-ray light curves of 1A 0535+262 in different energy bands observed by Swift/BAT and MAXI/GSC as obtained from http://sakamotoagu.mydns.jp/bat_gsc_trans_mon/web_lc/1_Day.php?name=1A_0535+262. Low three panels: long-term gamma-ray light curves of 1A 0535+262 with a time binning of 180 days. Spectral index was fixed to 2, 2.3, and 3, respectively. Upper limits at 95% confidence level are computed for bins with TS < 4.