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Arcus: the x-ray grating spectrometer explorer (Conference Presentation)
Author(s): Andrew F. Ptak; Randall Smith; Meghan Abraham; Marshall Bautz; Jay Bookbinder; Joel Bregman; Laura Brenneman; Nancy Brickhouse; David Burrows; Vadim Burwitz; Peter Cheimets; Elisa Costantini; Simon Dawson; Casey DeRoo; Abe Falcone; Adam Foster; Luigi Gallo; Catherine Grant; Hans Guenther; Ralf Heilmann; Ed Hertz; Butler Hine; David Huenemoerder; Jelle Kaastra; Ingo Kreykenbohm; Kristin K. Madsen; Randall McEntaffer; Eric Miller; Jon Miller; Elisabeth Morse; Richard Mushotzky; Kirpal Nandra; Michael Nowak; Fritz Paerels; Robert Petre; Katja Poppenhaeger; Paul Reid; Jeremy S. Sanders; Mark Schattenburg; Norbert Schulz; Alan Smale; Pasquale Temi; Lynne Valencic; Stephen Walker; Richard Willingale; Joern Wilms; Scott Wolk
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Paper Abstract

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 12-50 Å bandpass with unprecedented sensitivity: effective areas of >350 cm^2 and spectral resolution >2500 at the energies of O VII and O VIII for z=0-0.3. 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. Arcus will be launched into an ~ 7 day 4:1 lunar resonance orbit, resulting in high observing efficiency, low particle background and a favorable thermal environment. Mission operations are straightforward, as most observations will be long (~100 ksec), uninterrupted, and pre-planned. The baseline science mission will be completed in <2 years, although the margin on all consumables allows for 5+ years of operation.

Paper Details

Date Published: 10 July 2018
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Proc. SPIE 10699, Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray, 1069926 (10 July 2018); doi: 10.1117/12.2313965
Show Author Affiliations
Andrew F. Ptak, NASA Goddard Space Flight Ctr. (United States)
Randall Smith, Smithsonian Astrophysical Observatory (United States)
Meghan Abraham, The Aerospace Corp. (United States)
Marshall Bautz, Massachusetts Institute of Technology (United States)
Jay Bookbinder, NASA Ames Research Ctr. (United States)
Joel Bregman, Univ. of Michigan (United States)
Laura Brenneman, Smithsonian Astrophysical Observatory (United States)
Nancy Brickhouse, Smithsonian Astrophysical Observatory (United States)
David Burrows, The Pennsylvania State Univ. (United States)
Vadim Burwitz, Max-Planck-Institut für extraterrestrische Physik (Germany)
Peter Cheimets, Smithsonian Astrophysical Observatory (United States)
Elisa Costantini, SRON Netherlands Institute for Space Research (Netherlands)
Simon Dawson, NASA Ames Research Ctr. (United States)
Casey DeRoo, Smithsonian Astrophysical Observatory (United States)
Abe Falcone, The Pennsylvania State Univ. (United States)
Adam Foster, Smithsonian Astrophysical Observatory (United States)
Luigi Gallo, Saint Mary's Univ. (Canada)
Catherine Grant, Massachusetts Institute of Technology (United States)
Hans Guenther, Massachusetts Institute of Technology (United States)
Ralf Heilmann, Massachusetts Institute of Technology (United States)
Ed Hertz, Smithsonian Astrophysical Observatory (United States)
Butler Hine, NASA Ames Research Ctr. (United States)
David Huenemoerder, Massachusetts Institute of Technology (United States)
Jelle Kaastra, SRON Netherlands Institute for Space Research (Netherlands)
Ingo Kreykenbohm, Dr. Karl Remeis-Sternwarte Astronomisches Institut (Germany)
Kristin K. Madsen, Caltech (United States)
Randall McEntaffer, The Pennsylvania State Univ. (United States)
Eric Miller, Massachusetts Institute of Technology (United States)
Jon Miller, Univ. of Michigan (United States)
Elisabeth Morse, Orbital ATK (United States)
Richard Mushotzky, Univ. of Maryland, Baltimore County (United States)
Kirpal Nandra, Max-Planck-Institut für extraterrestrische Physik (Germany)
Michael Nowak, Massachusetts Institute of Technology (United States)
Fritz Paerels, Columbia Univ. (United States)
Robert Petre, NASA Goddard Space Flight Ctr. (United States)
Katja Poppenhaeger, Queen's Univ. Belfast (United Kingdom)
Paul Reid, Smithsonian Astrophysical Observatory (United States)
Jeremy S. Sanders, Max-Planck-Institut für extraterrestrische Physik (Germany)
Mark Schattenburg, Massachusetts Institute of Technology (United States)
Norbert Schulz, Massachusetts Institute of Technology (United States)
Alan Smale, NASA Goddard Space Flight Ctr. (United States)
Pasquale Temi, NASA Ames Research Ctr. (United States)
Lynne Valencic, Johns Hopkins Univ. (United States)
Stephen Walker, NASA Ames Research Ctr. (United States)
Richard Willingale, Univ. of Leicester (United States)
Joern Wilms, Dr. Karl Remeis-Sternwarte Astronomisches Institut (Germany)
Scott Wolk, Smithsonian Astrophysical Observatory (United States)


Published in SPIE Proceedings Vol. 10699:
Space Telescopes and Instrumentation 2018: Ultraviolet to Gamma Ray
Jan-Willem A. den Herder; Shouleh Nikzad; Kazuhiro Nakazawa, Editor(s)

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