SATLASX-ray · Space
XRISM
X-Ray Imaging and Spectroscopy Mission
OperatingOperating since 6 September 2023.
Resolve still operates with its gate valve closed, which limits it to about 1.7–12 keV.
Resolve, a 6 × 6 microcalorimetermicrocalorimeterA detector cooled to about 50 mK that measures each X-ray photon's energy from the tiny rise in temperature it causes. Reaches energy resolution of a few eV, far finer than an X-ray CCD. array at 50 mK, measures X-ray spectra with 5–7 eVelectronvoltThe energy an electron gains across 1 volt, 1.602 × 10⁻¹⁹ J. High-energy astronomy labels photons by energy: optical light is about 1.7–3.1 eV, X-rays 0.1–100 keV, gamma rays from about 100 keV to beyond 100 TeV. A 1 keV photon has wavelength 1.24 nm. resolution across 0.3–12 keV, resolving line shifts and widths: bulk motion and turbulence in cluster gas, winds from accreting black holes, abundances in supernova remnantssupernova remnantThe expanding debris and shocked interstellar gas left by a supernova, bright in X-rays for thousands of years. X-ray spectra give its temperature and the elements the explosion made.. Xtend, a CCDCCDCharge-coupled device: a silicon pixel array that stores photo-electrons and shifts them to a readout amplifier. The workhorse optical detector; in X-rays, each photon's charge also measures its energy. camera with a 38′ field at 0.4–13 keV, images alongside it. JAXA with NASA and ESA.
- Operator
- JAXA, NASA, ESA
- Orbit
- Low Earth orbit
- Passband
- 0.3 keV – 13 keV
- Launch
- 6 September 2023
Passband
Sky coverage
Pointed observationspointed observationObserving chosen targets, usually selected by peer review in annual proposal cycles, as opposed to surveying the sky systematically. Gives depth on few objects; the total area observed stays small., typically long, since Resolve's field of viewfield of viewThe patch of sky an instrument images at once, in square degrees for wide-field cameras or in steradians (sr) for all-sky monitors; 4π sr is the whole sky. is only about 3′ across.
Archives
Sources
Verified 15 November 2026.