The PASJ ( Publications of the Astronomical Society of Japan) special issue on XRISM has been published.
News PASJ Special Issue: Initial Results from XRISM
Related Topics
-
XRISM uncovers a mystery in the cosmic winds of change
The X-Ray Imaging and Spectroscopy Mission (XRISM), a collaboration between JAXA, NASA, and ESA, has made a breakthrough in understanding cosmic winds.
-
XRISM Uncovers Hot Gas and Its Dynamic Activities around a Black Hole in the Dimmest X-ray State
XRISM includes Resolve, a state-of-the-art soft X-ray spectrometer capable of measuring X-ray energies with unprecedented precision. Shortly after beginning regular operations, the team observed 4U 1630-472, a black hole X-ray binary located in the constellation Norma*4. Over roughly 25 hours from February 16–17, 2024, XRISM observed the system just before it returned to quiescence at the tail end of an outburst, when its X-ray brightness had already dropped to about one-tenth of its peak.
-
XRISM Unveils Super High-Speed Bullet-Like Winds Shooting from a Supermassive Black Hole
Supermassive black holes lie at the centers of all galaxies and are believed to evolve along with their host galaxies—a process known as “galaxy–black hole coevolution.” Understanding this intricate relationship remains one of the most compelling challenges in astrophysics. A central player in this process is the “wind” or “outflow” of gas that black holes eject at high speeds. These outflows are thought to regulate star formation by heating or expelling the surrounding gas, thereby shaping the growth of both the galaxy and the black hole.