Our publications
The temperature and metallicity distributions of the ICM: insights with TNG-Cluster for XRISM-like observations
01/04/2026 - High-Energy
The new era of high-resolution X-ray spectroscopy will significantly improve our understanding of the intracluster medium (ICM) by providing precise constraints on its underlying physical properties. However, spectral fitting requires reasonable assumptions on the thermal and chemical distributions of the gas. We use the output of TNG-Cluster, the newest addition to the IllustrisTNG suite of…
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Asymmetric Distribution of Fe-peak Elements in Cassiopeia A Revealed by XRISM
01/04/2026 - High-Energy
The elemental abundances of the Fe-peak elements (such as Cr, Mn, Fe, and Ni) and Ti are important for understanding the environment of explosive nuclear burning for the core-collapse supernovae (CCSNe). In particular, the supernova remnant Cassiopeia A (Cas A), which is well known for its asymmetric structure, contains three “Fe-rich blobs,” and the composition…
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The VLT/ERIS grating vector Apodizing Phase Plate coronagraph: Design and on-sky performance
01/04/2026 - Technology
Aims. We describe the design, laboratory manufacture, and on-sky testing of the grating vector apodizing phase plate (gvAPP) coronagraph for the Enhanced Resolution Imager and Spectrograph (ERIS) on the Very Large Telescope. Methods. We used both laboratory measurements and on-sky observations to characterise the gvAPP in several different filters, from the K to the L…
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Revisiting the Perseus Cluster. III. Role of Aspherical Explosions on Its Chemical Composition and Extension to Metal-poor Stars and Galaxies
01/04/2026 - High-Energy
The Perseus Cluster has been precisely measured by the legacy Hitomi telescope on the Si-group (Si, S, Ar, Ca) and Fe-group elements (Cr, Mn, Ni). These element abundance ratios provide insight into the typical behavior of supernovae. In Leung et al., we presented new massive star explosion models at various metallicity, assuming spherical explosions. We…
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Revisiting the Perseus Cluster. II. Metallicity-dependence of Massive Stars and Chemical Enrichment History
01/04/2026 - High-Energy
The legacy Hitomi telescope has delivered the precise measurements of the chemical abundances in the Perseus Cluster, covering the Si-group (Si, S, Ar, Ca) and Fe-group elements (Cr, Mn, Ni). In Paper I, we examined the role of convection parameters and presented new core-collapse supernova (CCSN) explosion models at solar metallicity, which fit the observed…
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No thick atmosphere around TRAPPIST-1 b and c from JWST thermal phase curves
01/04/2026 - Exoplanets
The survival of dense secondary atmospheres around temperate rocky planets orbiting low-mass red dwarfs remains an important open question. Here we show that the thermal phase curves of TRAPPIST-1 b and TRAPPIST-1 c, measured with the James Webb Space Telescope at 15 μm, are consistent with bare rocky surfaces rather than thick atmospheres. TRAPPIST-1 b…
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Michael Wise
General and Scientific Director of SRON (Prof. Dr.)
“To work at an institute at the forefront of new technology, new space missions and new answers to scientific questions is incredibly inspiring.”
