UCLA Team Reports Chandra X-ray Blob as Candidate Supernova Remnant 1,700 Years Old Near Sagittarius C

The authors combined Chandra ACIS and XMM-Newton EPIC data with MeerKAT 1.28 GHz radio maps to isolate a compact X-ray feature whose surface brightness exceeds known stellar clusters by more than a factor of ten. No abundance enhancement of Si, S or Fe was detected, consistent with rapid mixing into the surrounding 10^4 K ionized gas previously mapped by SOFIA. The remnant sits inside a radio bubble whose expansion had already hinted at a recent energetic event. This location only 26,000 light-years from Earth places the explosion within the sphere of influence of Sgr A*, where tidal forces and magnetic filaments could alter remnant evolution. The absence of a pulsar or compact object in the current data leaves open the possibility that the X-rays arise from colliding winds rather than a single supernova. Deeper Chandra or XRISM spectroscopy targeting the 6.7 keV Fe line would distinguish the two scenarios within one observing cycle.