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astro-ph.IM2025

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…

astro-ph.IM2025

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…

astro-ph.IM2025

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…

astro-ph.IM2025

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…

astro-ph.IM2024

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…

astro-ph.IM2024

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…