J1748.9-2021 : X-ray and optical outburst
According to ATEL No. 74, this X-ray transient in NGC 6440
experienced an outburst (in't Zand et al.) and the source has
been confirmed to be identified with the outbursting optical variable V2
(vsnet-campaign-xray 83,
84,
vsnet-campaign 1151,
1152).
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