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Probing Shocked Ejecta in SN 1987A: A novel diagnostic approach using XRISM-Resolve
Vincenzo Sapienza, Marco Miceli, Aya Bamba +10
Supernova (SN) 1987A is one of the best candidates to exploit the capabilities of the freshly launched XRISM satellite. This celestial object offers the unique opportunity to study…
X-ray/H scaling relationships in stellar flares
Hiroki Kawai, Yohko Tsuboi, Wataru B. Iwakiri +5
We report on the results of our simultaneous observations of three large stellar flares with soft X-rays (SXRs) and an H emission line from two binary systems of RS CVn t…
High-Resolution X-Ray Spectroscopy of Supernova Remnants
Satoru Katsuda
Thermal X-ray spectra from supernova remnants (SNRs) are dominated by a number of line emission from various elements. Resolving the individual lines is critically important for a…
Long-Term Density Trend in the Mesosphere and Lower Thermosphere from Occultations of the Crab Nebula with X-Ray Astronomy Satellites
Satoru Katsuda, Teruaki Enoto, Andrea N. Lommen +9
We present long-term density trends of the Earth's upper atmosphere at altitudes between 71 and 116 km, based on atmospheric occultations of the Crab Nebula observed with X-ray ast…