121 citations · 1k across the 48 of their papers we have counts for
6 papers · 1 filter
SPEX: High-Resolution Spectral Modeling and Fitting for X-ray Astronomy
Jelle de Plaa, Jelle S. Kaastra, Liyi Gu +2
We present the SPEX software package for modeling and fitting X-ray spectra. Our group has developed spectral models, atomic data and code for X-ray applications since the 1970's.…
Incoherent fast variability of X-ray obscurers. The case of NGC 3783
B. De Marco, T. P. Adhikari, G. Ponti +22
Context. Obscuration events caused by outflowing clumps or streams of high column density, low ionisation gas, heavily absorbing the X-ray continuum, have been witnessed in a numbe…
The impact of improved plasma diagnostics on modeling the X-ray Universe
Junjie Mao, Francois Mernier, Jelle S. Kaastra +3
The high-resolution X-ray spectrum of the Perseus galaxy cluster observed with the Hitomi satellite challenges astrophysical collisional ionized plasma models that are widely used…
Observations of a Pre-Merger Shock in Colliding Clusters of Galaxies
Liyi Gu, Hiroki Akamatsu, Timothy W. Shimwell +10
Clusters of galaxies are the largest known gravitationally-bound structures in the Universe. When clusters collide, they create merger shocks on cosmological scales, which transfor…
X-ray spectra of the Fe-L complex
Liyi Gu, A. J. J. Raassen, Junjie Mao +7
The Hitomi results on the Perseus cluster lead to improvements in our knowledge of atomic physics which are crucial for the precise diagnostic of hot astrophysical plasma observed…
CIELO-RGS: a catalogue of soft X-ray ionized emission lines
Junjie Mao, J. S. Kaastra, M. Guainazzi +9
High-resolution X-ray spectroscopy has advanced our understanding of the hot Universe by revealing physical properties like kinematics, temperature, and abundances of the astrophys…