10 papers
Resolving the Fe K Doublet of the Galactic Center Molecular Cloud G0.11-0.11 with XRISM
Stephen DiKerby, Shuo Zhang, Kumiko Nobukawa +3
Fe K line emission from Galactic center molecular clouds can be produced either via fluorescence after illumination by an X-ray source or by cosmic ray ionization. Unparalleled…
The unusual spectrum of the X-ray transient source XRISM J174610.8-290021 near the Galactic center
A. Yoshimoto, S. Yamauchi, M. Nobukawa +20
The Galactic center region was observed with the XRISM X-ray observatory during the performance verification phase in 2024 and a point-like X-ray source was detected with the X-ray…
In-orbit Performance of the Soft X-ray Imaging Telescope Xtend aboard XRISM
Hiroyuki Uchida, Koji Mori, Hiroshi Tomida +62
We present a summary of the in-orbit performance of the soft X-ray imaging telescope Xtend onboard the XRISM mission, based on in-flight observation data, including first-light cel…
New CCD Driving Technique to Suppress Anomalous Charge Intrusion from Outside the Imaging Area for Soft X-ray Imager of Xtend onboard XRISM
Hirofumi Noda, Mio Aoyagi, Koji Mori +22
The Soft X-ray Imager (SXI) is an X-ray CCD camera of the Xtend system onboard the X-Ray Imaging and Spectroscopy Mission (XRISM), which was successfully launched on September 7, 2…
Soft X-ray Imager of the Xtend system onboard XRISM
Hirofumi Noda, Koji Mori, Hiroshi Tomida +57
The Soft X-ray Imager (SXI) is the X-ray charge-coupled device (CCD) camera for the soft X-ray imaging telescope Xtend installed on the X-ray Imaging and Spectroscopy Mission (XRIS…
Overionized plasma in the supernova remnant Sagittarius A East anchored by XRISM observations
XRISM Collaboration
Sagittarius A East is a supernova remnant with a unique surrounding environment, as it is located in the immediate vicinity of the supermassive black hole at the Galactic center, S…
Feasibility study of upper atmosphere density measurement on the ISS by observations of the CXB transmitted through the Earth rim
Takumi Kishimoto, Kumiko K. Nobukawa, Ayaki Takeda +11
Measurements of the upper atmosphere at ~100 km are important to investigate climate change, space weather forecasting, and the interaction between the Sun and the Earth. Atmospher…
SUIM project: measuring the upper atmosphere from the ISS by observations of the CXB transmitted through the Earth rim
Kumiko K. Nobukawa, Ayaki Takeda, Satoru Katsuda +16
The upper atmosphere at the altitude of 60-110 km, the mesosphere and lower thermosphere (MLT), has the least observational data of all atmospheres due to the difficulties of in-si…
Status of Xtend telescope onboard X-Ray Imaging and Spectroscopy Mission (XRISM)
Koji Mori, Hiroshi Tomida, Hiroshi Nakajima +59
Xtend is one of the two telescopes onboard the X-ray imaging and spectroscopy mission (XRISM), which was launched on September 7th, 2023. Xtend comprises the Soft X-ray Imager (SXI…
Initial operations of the Soft X-ray Imager onboard XRISM
Hiromasa Suzuki, Tomokage Yoneyama, Shogo B. Kobayashi +52
XRISM (X-Ray Imaging and Spectroscopy Mission) is an astronomical satellite with the capability of high-resolution spectroscopy with the X-ray microcalorimeter, Resolve, and wide f…