All articles tagged with #xrism
Scientists are exploring the nature of dark matter, which makes up about 85% of the universe's matter, by studying galaxy clusters with NASA's XRISM telescope. They are particularly interested in detecting signals from hypothetical particles called sterile neutrinos, which could decay and produce observable X-ray emissions, potentially revealing the particles that constitute dark matter.
An international X-ray spacecraft has discovered that the Milky Way's supermassive black hole, Sagittarius A*, experienced powerful flares over the past 1,000 years, revealing a violent history previously unknown, which could reshape our understanding of black hole evolution and their influence on galaxy formation.
Using XRISM's high-resolution instruments alongside ESA's XMM-Newton and NASA's NuSTAR, scientists captured unprecedented details of a supermassive black hole in galaxy MCG–6-30-15, confirming relativistic effects near the event horizon, identifying multiple wind zones, and challenging previous models of distant reflection, thus advancing our understanding of black hole physics and galaxy growth.
XRISM, a joint JAXA-NASA mission, has captured the sharpest X-ray image to date of a rapidly spinning supermassive black hole in galaxy MCG–6-30-15, providing new insights into black hole spin and the environment near the event horizon by combining high-resolution data with other telescopes, and confirming the presence of material orbiting close to the speed of light.
Astronomers using the XRISM spacecraft observed powerful, unexpectedly dense winds from a neutron star's accretion disk, revealing differences from black hole winds and offering new insights into the physics of matter inflow and outflow around extreme objects, which could reshape our understanding of cosmic energy transfer.
The XRISM mission has discovered that the winds from a neutron star system are unexpectedly dense and slower than those from supermassive black holes, challenging current understanding of how such winds form and influence their environments. The findings suggest that differences in accretion disc temperature and size may explain the variations, providing new insights into cosmic feedback mechanisms and galaxy evolution.
NASA and Japan's XRISM satellite made a groundbreaking discovery by directly detecting both solid and gaseous sulfur in the interstellar medium, providing new insights into the chemical processes that shape our galaxy and potentially influence planet formation and habitability.
Scientists have discovered that supermassive black holes emit high-velocity, bullet-like winds that are highly inhomogeneous and chaotic, challenging previous models of steady outflows. These clumpy winds can significantly influence galaxy evolution by regulating star formation, with implications for understanding black hole feedback and galaxy growth. Observations from XRISM are helping to unravel the complex structure and impact of these winds.
The XRISM observatory, a collaboration between JAXA and NASA, has provided the most detailed X-ray portrait of Cygnus X-3, a binary system featuring a Wolf-Rayet star and a likely black hole. The mission's high-resolution spectrum reveals complex gas dynamics, including the effects of the Doppler shift due to rapid gas motion. This study aims to enhance understanding of the system's structure and confirm the nature of its compact object. The findings will be published in The Astrophysical Journal.
The Japanese X-ray astronomy satellite XRISM, developed with contributions from NASA and ESA, is performing well in orbit, except for an issue with one of its instruments' aperture door. Despite the door not opening as intended, the spacecraft's two main instruments, Resolve and Xtend, are meeting or exceeding most requirements. NASA and JAXA are working to troubleshoot the aperture door issue, with hopes that it will eventually open, allowing the instrument to operate at full capacity.
The X-ray Imaging and Spectroscopy Mission (XRISM), a joint project between JAXA and NASA, has released its first test images, including one of the supernova remnant N123D and another of galaxy cluster Abell 2319. The images were captured by the XRISM X-ray space telescope, which is designed to study extreme phenomena in the universe, such as black hole outbursts and super-hot gas clouds around galaxy clusters. The telescope's Resolve instrument revealed elements forged in the original star and blasted away during the supernova explosion, providing insights into the star's original composition and the explosion itself. The Xtend imager also captured an X-ray image of Abell 2319, showcasing its wide field of view.
The XRISM mission, a collaboration between Japan, NASA, and ESA, is set to revolutionize X-ray astronomy with its advanced instruments, Resolve and Xtend, offering unprecedented insights into the universe’s hottest and most massive structures. The Resolve instrument captured the most detailed X-ray spectrum of supernova remnant N132D in the Large Magellanic Cloud, revealing peaks associated with silicon, sulfur, argon, calcium, and iron. Despite technical challenges with the aperture door, Resolve is already exceeding expectations, achieving a spectral resolution of 5 electron volts instead of the planned 7. The Xtend instrument also captured an X-ray image of galaxy cluster Abell 2319, showcasing its wide field of view. NASA’s XRISM General Observer Facility is accepting proposals for observations, with Cycle 1 investigations set to begin in the summer of 2024.
NASA and JAXA have released the first images from the XRISM observatory, revealing a detailed view of a supernova remnant called N132D located 160,000 light years away in the Large Magellanic Cloud. The observatory's instruments allowed researchers to identify elements within the remnant, providing unprecedented insights into the original star and its supernova explosion.
Japan's space agency JAXA, in collaboration with NASA and with participation from ESA, has released the first test images from the X-Ray Imaging and Spectroscopy Mission (XRISM), showcasing a galaxy cluster and a supernova remnant. The images reveal the chemical composition of cosmic entities and are crucial for understanding the evolution of the universe. XRISM, which launched in September 2023, will begin regular operations later this year, promising to provide detailed insights into high-energy X-ray sources such as star deaths and black holes.
The XRISM mission, a collaboration between JAXA and NASA, has provided its first glimpse into the X-ray universe, showcasing detailed images and spectra of cosmic phenomena such as supernova remnants and galaxy clusters. The mission's instruments, Resolve and Xtend, are already exceeding performance expectations, despite an issue with Resolve's aperture door not opening fully. XRISM aims to offer new insights into the chemical composition, motion, and physical states of X-ray sources, enhancing our understanding of the universe's hottest and most energetic regions. Regular operations are expected to begin later in 2024.