activity
20222026
most citedPolarized x-rays from a magnetar

73 citations · 199 across the 20 of their papers we have counts for

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Showing astro-ph.IMShow all

6 papers · 1 filter

astro-ph.IM2026

Design of a mission to measure the shape and substructure of the 511 keV gamma-ray line from the center of the Milky Way

Kun Hu, Matthew Fritts, Daniel Becker +23

The 511 keV electron-positron annihilation feature near the galactic center has been detected for more than half a century, yet its origin remains a mystery. In this paper, we desc…

astro-ph.IM2025

Improving the Energy and Angular Resolutions of X-ray Telescopes with Nitrogen-Vacancy Centers in Diamond

Ephraim Gau, Zhongyuan Liu, Henric Krawczynski +1

We introduce a focal-plane detector for advancing the energy and angular resolutions of current X-ray telescopes. The architecture integrates a metallic magnetic microcalorimeter (…

astro-ph.IM2024★ 3 cited

Systematic effects on a Compton polarimeter at the focus of an X-ray mirror

M. Aoyagi, R. G. Bose, S. Chun +23

XL-Calibur is a balloon-borne Compton polarimeter for X-rays in the 15-80 keV range. Using an X-ray mirror with a 12 m focal length for collecting photons onto a beryllium sc…

astro-ph.IM2023

ASCENT - A balloon-borne hard X-ray imaging spectroscopy telescope using transition edge sensor microcalorimeter detectors

Fabian Kislat, Daniel Becker, Douglas Bennett +26

Core collapse supernovae are thought to be one of the main sources in the galaxy of elements heavier than iron. Understanding the origin of the elements is thus tightly linked to o…

astro-ph.IM2022★ 12 cited

The design and performance of the XL-Calibur anticoincidence shield

N. K. Iyer, M. Kiss, M. Pearce +31

The XL-Calibur balloon-borne hard X-ray polarimetry mission comprises a Compton-scattering polarimeter placed at the focal point of an X-ray mirror. The polarimeter is housed withi…

astro-ph.IM2022★ 7 cited

The 511-CAM Mission: A Pointed 511 keV Gamma-Ray Telescope with a Focal Plane Detector Made of Stacked Transition Edge Sensor Microcalorimeter Arrays

Farzane Shirazi, Md. Arman Hossen, Daniel Becker +18

The 511 keV gamma-ray emission from the galactic center region may fully or partially originate from the annihilation of positrons from dark matter particles with electrons from th…