SAX J2043.6+7717 : A new type of fast X-ray transient

Heise et al. reported in GCN 1138 that this X-ray rich and weak gamma-ray transient is a totally new class of transient phenomena. X-ray emissions during its eruption is non-thermal and the ourburst duration is less than a few thousand seconds. The optical and infrared counterpart of this object have not been significantly detected (vsnet-campaign-xray 96).