A new ultraluminous X-ray source in the galaxy NGC 5907
A new ultraluminous X-ray source in the galaxy NGC 5907
We report on the serendipitous discovery of a new transient in NGC 5907, at a peak luminosity of 6.4x10^{39} erg/s. The source was undetected in previous 2012 Chandra observations with a 3 sigma upper limit on the luminosity of 1.5x10^{38} erg/s, implying a flux increase of a factor of >35. …