Evidence for Charge Exchange Emission in Supernova Remnant N132D from XRISM/Resolve Observations

Kavli Affiliate: Eric D. Miller | First 5 Authors: Liyi Gu, Hiroya Yamaguchi, Adam Foster, Satoru Katsuda, Hiroyuki Uchida | Summary: XRISM has delivered one of its first light observations on N132D, the X-ray brightest supernova remnant in the Large Magellanic Cloud. Utilizing 193 ks of high-resolution X-ray spectroscopy data, we conduct a comprehensive search […]


Continue.. Evidence for Charge Exchange Emission in Supernova Remnant N132D from XRISM/Resolve Observations

Ain’t no resonance high enough: Core collapse in self-interacting dark matter across two decades in halo mass

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Vinh Tran, Xuejian Shen, Daniel Gilman, Mark Vogelsberger, Stephanie O’Neil | Summary: Core collapse, a process associated with self-interacting dark matter (SIDM) models, can increase the central density of halos by orders of magnitude with observable consequences for dwarf galaxy properties and gravitational lensing. Resonances in the […]


Continue.. Ain’t no resonance high enough: Core collapse in self-interacting dark matter across two decades in halo mass

Supersizing hydrodynamical simulations of reionization using perturbative techniques

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Wenzer Qin, Katelin Schutz, Olivia Rosenstein, Stephanie O’Neil, Mark Vogelsberger | Summary: We show that perturbative techniques inspired by effective field theory (EFT) can be used to "paint on" the 21~cm field during reionization using only the underlying linear density field. This procedure is accurate to within […]


Continue.. Supersizing hydrodynamical simulations of reionization using perturbative techniques

TDCOSMO XVII. New time delays in 22 lensed quasars from optical monitoring with the ESO-VST 2.6m and MPG 2.2m telescopes

Kavli Affiliate: R. G. McMahon | First 5 Authors: , , , , | Summary: We present new time delays, the main ingredient of time delay cosmography, for 22 lensed quasars resulting from high-cadence r-band monitoring on the 2.6 m ESO VLT Survey Telescope and Max-Planck-Gesellschaft 2.2 m telescope. Each lensed quasar was typically monitored […]


Continue.. TDCOSMO XVII. New time delays in 22 lensed quasars from optical monitoring with the ESO-VST 2.6m and MPG 2.2m telescopes

Core collapse in resonant self-interacting dark matter across two decades in halo mass

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Vinh Tran, Vinh Tran, , , | Summary: Core collapse, a process associated with self-interacting dark matter (SIDM) models, can increase the central density of halos by orders of magnitude with observable consequences for dwarf galaxy properties and gravitational lensing. Resonances in the self-interaction cross section, features […]


Continue.. Core collapse in resonant self-interacting dark matter across two decades in halo mass

Core collapse in resonant self-interacting dark matter across two decades in halo mass

Kavli Affiliate: Mark Vogelsberger | First 5 Authors: Vinh Tran, Vinh Tran, , , | Summary: Core collapse, a process associated with self-interacting dark matter (SIDM) models, can increase the central density of halos by orders of magnitude with observable consequences for dwarf galaxy properties and gravitational lensing. Resonances in the self-interaction cross section, features […]


Continue.. Core collapse in resonant self-interacting dark matter across two decades in halo mass

Enhancing Compton telescope imaging with maximum a posteriori estimation: a modified Richardson-Lucy algorithm for the Compton Spectrometer and Imager

Kavli Affiliate: Shigeki Matsumoto | First 5 Authors: Hiroki Yoneda, Thomas Siegert, Israel Martinez-Castellanos, Savitri Gallego, Chris Karwin | Summary: We present a modified Richardson-Lucy (RL) algorithm tailored for image reconstruction in MeV gamma-ray observations, focusing on its application to the upcoming Compton Spectrometer and Imager (COSI) mission. Our method addresses key challenges in MeV […]


Continue.. Enhancing Compton telescope imaging with maximum a posteriori estimation: a modified Richardson-Lucy algorithm for the Compton Spectrometer and Imager