First XRISM results: ten-billion-degree supernova remnant and dust donut at 0.1 light years from black hole

Following its launch on September 7th, 2023, and the subsequent series of tests, the XRISM X-ray telescope has produced its first two scientific papers. The team marveled at a temperature of ten billion degrees Celsius inside a supernova remnant. And it measured the distance of the dust ring around a supermassive black hole. In the case of NGC 4151, this turns out to be 0.1 light years. SRON has developed the filter wheel and an X-ray source used to calibrate the energy scale of the Resolve instrument.