The composite image above features X-ray and optical data of a so-called luminous fast blue optical transient (LFBOT) named AT 2024wpp. LFBOTs are a class of object involving bright flashes of blue and ultraviolet light that gradually fade away, leaving behind faint X-ray and radio signals. The X-ray data from NASA’s Chandra X-ray Observatory shows AT 2024wpp as a blue point source within its host galaxy, seen in optical data from the Legacy Survey (red and white). As the brightest LFBOT ever seen, AT 2024wpp is easily detected despite being about 1.1 billion light-years from Earth. AT 2024wpp was discovered on 2024 September 25 in ZTF (Zwicky Transient Factory) survey data at a redshift of z = 0.087. A paper by Nayana et al. reports the analysis of X-ray and radio emission from AT 2024wpp, which includes the Chandra, Swift and NuSTAR X-ray satellites and the ATCA and ALMA radio-telescopes. The ATCA observed AT 2024wpp at seven epochs between 15 and 175 days after its discovery in the 15mm, 7mm, and 4cm bands. It is thought that AT 2024wpp likely came from an extreme event where a black hole up to 100 times the mass of the Sun tore apart a companion star that got too close. (Image credit: NASA/CXC/UC Berkeley/Nayana A.J et al. (X-ray); Legacy Survey/DECaLS/BASS/MzLS (Optical); NASA/CXC/SAO/P. Edmonds and N. Wolk (Image Processing))
