Translator Disclaimer
Presentation + Paper
29 August 2017 Arcus: exploring the formation and evolution of clusters, galaxies, and stars
Author Affiliations +
Arcus, a Medium Explorer (MIDEX) mission, was selected by NASA for a Phase A study in August 2017. The observatory provides high-resolution soft X-ray spectroscopy in the 12-50Å bandpass with unprecedented sensitivity: effective areas of >450 cm2 and spectral resolution >2500. The Arcus key science goals are (1) to measure the effects of structure formation imprinted upon the hot baryons that are predicted to lie in extended halos around galaxies, groups, and clusters, (2) to trace the propagation of outflowing mass, energy, and momentum from the vicinity of the black hole to extragalactic scales as a measure of their feedback and (3) to explore how stars, circumstellar disks and exoplanet atmospheres form and evolve. Arcus relies upon the same 12m focal length grazing-incidence silicon pore X-ray optics (SPO) that ESA has developed for the Athena mission; the focal length is achieved on orbit via an extendable optical bench. The focused X-rays from these optics are diffracted by high-efficiency Critical-Angle Transmission (CAT) gratings, and the results are imaged with flight-proven CCD detectors and electronics. The power and telemetry requirements on the spacecraft are modest. Mission operations are straightforward, as most observations will be long (~100 ksec), uninterrupted, and pre-planned, although there will be capabilities to observe sources such as tidal disruption events or supernovae with a ~3 day turnaround. Following the 2nd year of operation, Arcus will transition to a proposal-driven guest observatory facility.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.


Arcus an ISS attached high resolution x ray grating...
Proceedings of SPIE (July 24 2014)
Herschel Space Observatory mission overview
Proceedings of SPIE (March 05 2003)
Overview of EXIST mission science and implementation
Proceedings of SPIE (September 17 2010)
Future x-ray missions: the extragalactic perspective
Proceedings of SPIE (December 16 2002)
Virmos-VLT deep survey (VVDS)
Proceedings of SPIE (February 13 2003)
An overview of the IXO Observatory
Proceedings of SPIE (July 29 2010)

Back to Top