ISRAEL , G. L.

We report on multi-band observations of the transient source Swift J0840.7−3516, which was detected in outburst in 2020 February by the Neil Gehrels Swift Observatory. The outburst episode lasted just ∼5 days, during which the X-ray luminosity quickly decreased from L X ≈ 3 × 10 37 d 10 2 erg s −1 at peak down to L X ≈ 5 × 10 33 d 10 2 erg s −1...