Research on Space Science X-Ray Imaging and Spectroscopy Mission (XRISM)

Under Development

About X-Ray Imaging and Spectroscopy Mission (XRISM)

See how cosmic wind blows through galaxies

After the loss of ASTRO-H, JAXA conducted a thorough mishap investigation, and derived an extensive list of lessons learned. These lessons are being rigorously employed in the development of the new X-Ray Imaging and Spectroscopy Mission (XRISM). Building on the successes of the ASTRO-H mission, XRISM will perform the high-resolution X-ray spectroscopic observations of the hot gas plasma wind that blows through the galaxies in the universe. These observations will enable us to determine flows of mass and energy, revealing the composition and evolution of celestial objects. This innovative, JAXA-led international project will be developed in collaboration with NASA, ESA, and other highly-qualified partners. XRISM will carry forward the ambitions and successes of ASTRO-H, and will deliver the highly-anticipated scientific results to the world.

Project Topics

Jun. 17, 2019 Updated

Agreement with European Space Agency (ESA) for cooperation on the X-Ray Imaging and Spectroscopy Mission: XRISM

Japan Aerospace Exploration Agency has agreed to cooperate with European Space Agency (ESA) on the X-Ray Imaging and SpectroscopyMission: XRISM. Hiroshi Yamakawa, President of JAXA and Johann-Dietrich Wörner, Director General of ESA have signed the agreement in presence of ESA Council Delegates at the European Space Operation Center in Darmstadt, Germany on June 14, 2019. The XRISM project, kicked off in 2018, is the seventh X-ray astronomy satellite program of the Institute of Space and As...

Characteristics of X-Ray Imaging and Spectroscopy Mission (XRISM)

Scientific Enigmas for XRISM to Investigate

By measuring the velocity and makeup of the plasma between stars and galaxies, XRISM will resolve more precisely than ever how these celestial objects are formed.

Spectroscopy and Imaging of XRISM

Spectroscopy is the measuring of the strength of light at different wavelengths, in the same way our eyes can see different shades of colors. In X-ray astronomy, by making a precise measurement of wavelength (energy) of X-ray photons in the universe, we can measure the temperature of celestial objects, the type of matter they contain, and their speed. The micro-calorimeter, Resolve, has excellent spectroscopic capabilities. On the other hand, imaging takes a picture of an object. By examining the shape and brightness distribution, we can learn about the spatial extent of celestial objects. XRISM has an X-ray CCD camera, Xtend, which can image objects over a wide field of view.

Major Characteristics

Name XRISM (X-Ray Imaging and Spectroscopy Mission)
Weight 2.3 t
Orbital Altitude 550 +/- 50 km
Orbital Inclinarion 31 degree
Mission instruments (Planned) Resolve (Soft X-ray Spectrometer) / Xtend (Soft X-ray Imager)