Development of TES microcalorimeters for the HUBS Mission

Wei Cui

doi:10.1117/12.2677354

5 October 2023 Development of TES microcalorimeters for the HUBS Mission

Wei Cui

Proceedings Volume 12678, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIII; 1267810 (2023) https://doi.org/10.1117/12.2677354
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

The Hot Universe Baryon Surveyor (HUBS) mission aims at addressing the long-standing ”missing baryon problem” in astrophysics and cosmology. Observationally, it is realized that the detectable amount of baryonic matter (i.e., normal matter, as opposed to dark matter) in the present-day universe is significantly less than that in the early universe. Theoretically, it is postulated that such "missing” baryons are present in diffuse gas of very low density and high temperature around and between galaxies. The gas would radiate soft x-ray, but the signal is thought to be too weak to be detected by the current generation of x-ray observing facilities. HUBS plans to take advantage of the superior (photon) energy resolution of microcalorimeters, to increase the signal-to-noise ratio of detections through narrow-band imaging and to perform high-resolution x-ray spectroscopy, as the spectrum of the radiation is expected to be dominated by emission lines. The HUBS mission and the associated development of microcalorimeters are briefly described in this work.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Wei Cui "Development of TES microcalorimeters for the HUBS Mission", Proc. SPIE 12678, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIII, 1267810 (5 October 2023); https://doi.org/10.1117/12.2677354

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