Kavli Affiliate: Mark Vogelsberger | Summary:Warm and self-interactive dark matter cosmologies have been proposed as nonbaryonic solutions to the tensions between the $Λ$ cold dark matter model and observations at the kiloparsec scale. In this paper, we used the dark matter-only runs of the textscaida-tng project, a set of cosmological simulations of different sizes and […]

Kavli Affiliate: Mark Vogelsberger | Summary:In the standard Cold Dark Matter (CDM) scenario, the density profiles of dark matter haloes are well described by analytical models linking their concentration to halo mass. Alternative scenarios, such as warm dark matter (WDM) and self-interacting dark matter (SIDM), modify the inner structure of haloes and predict different profile […]

Kavli Affiliate: Andrew Vanderburg | Summary:The JWST MIRI detector exhibits a flux deficit persistence, but its timescales and impacts remain largely uncharacterized, particularly at the longest imaging wavelengths. In this study, we analyze full-field MIRI imager observations at 21 $μ$m (F2100W) to quantify detector persistence following a saturation event by a bright (K = 5.65 […]

Kavli Affiliate: Eric Miller | Summary:A high-resolution X-ray spectroscopic observation was made of the RS CVn-type binary star HR 1099 using the Resolve instrument onboard XRISM for its calibration purposes. During the $sim$400 ks telescope time covering 1.5 binary orbit, a flare lasting for $sim$100 ks was observed with a released X-ray radiation energy of […]