Far-ultraviolet spectroscopy on the Arcus x-ray probe

Kevin France; Brian Fleming; Laura Brenneman; Randall Smith; Joel Bregman; Nancy Brickhouse; Hans Moritz Günther; Todd M. Tripp; Dolon Bhattacharyya; Timothy Hellickson; Nicholas Nell; Thomas Patton; Katja Poppenhaeger; Pasqualle Temi

doi:10.1117/12.2677332

5 October 2023 Far-ultraviolet spectroscopy on the Arcus x-ray probe

Kevin France, Brian Fleming, Laura Brenneman, Randall Smith, Joel Bregman, Nancy Brickhouse, Hans Moritz Günther, Todd M. Tripp, Dolon Bhattacharyya, Timothy Hellickson, Nicholas Nell, Thomas Patton, Katja Poppenhaeger, Pasqualle Temi

Author Affiliations +

Proceedings Volume 12678, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIII; 126780F (2023) https://doi.org/10.1117/12.2677332
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

Arcus is a high-resolution soft X-ray and far-ultraviolet spectroscopy mission being developed for submission to NASA’s inaugural Astrophysics Probe solicitation. Arcus makes simultaneous observations in these two critical wavelength regimes to address a broad range of science questions highlighted by the 2020 Astronomy and Astrophysics Decadal Survey, from the temperature and composition of the missing baryons in the intergalactic medium to the evolution of stars and their influence on orbiting planets. This proceeding presents the science motivation for and performance of the Arcus UltraViolet spectrograph (UVS). UVS comprises a 60 cm, off-axis Cassegrain telescope feeding an imaging spectrograph operating over the 970 – 1580 ˚A bandpass. The instrument employs two interchangeable diffraction gratings to provide medium-resolution spectroscopy (R ⪆ 20,000 in two grating modes centered at approximately 1110 and 1390 ˚A, respectively). The spectra are recorded on an open-face, photon-counting microchannel plate detector. The instrument design achieves an end-to-end sensitivity ⪆ 10 times that of the Far-Ultraviolet Spectroscopic Explorer over the key 1020 – 1150 ˚A range and offers arcsecond-level angular resolution spectral imaging over a six arcminute long slit for observations of extended sources. We describe example science investigations for FUV spectroscopy on Arcus, the resultant instrument design and predicted performance, and simulated data from potential Guest Observer programs with Arcus.

Conference Presentation

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

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Kevin France, Brian Fleming, Laura Brenneman, Randall Smith, Joel Bregman, Nancy Brickhouse, Hans Moritz Günther, Todd M. Tripp, Dolon Bhattacharyya, Timothy Hellickson, Nicholas Nell, Thomas Patton, Katja Poppenhaeger, and Pasqualle Temi "Far-ultraviolet spectroscopy on the Arcus x-ray probe", Proc. SPIE 12678, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XXIII, 126780F (5 October 2023); https://doi.org/10.1117/12.2677332

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