The FOXSI solar sounding rocket campaigns

Lindsay Glesener, Säm Krucker, Steven Christe, Shin Nosuke Ishikawa, Juan Camilo Buitrago-Casas, Brian Ramsey, Mikhail Gubarev, Tadayuki Takahashi, Shin Watanabe, Shin'ichiro Takeda, Sasha Courtade, Paul Turin, Stephen McBride, Van Shourt, Jane Hoberman, Natalie Foster, Juliana Vievering

Research output: Chapter in Book/Report/Conference proceedingConference contribution

28 Scopus citations


The Focusing Optics X-ray Solar Imager (FOXSI) is, in its initial form, a sounding rocket experiment designed to apply the technique of focusing hard X-ray (HXR) optics to the study of fundamental questions about the high-energy Sun. Solar HXRs arise via bremsstrahlung from energetic electrons and hot plasma produced in solar flares and thus are one of the most direct diagnostics of are-accelerated electrons and the impulsive heating of the solar corona. Previous missions have always been limited in sensitivity and dynamic range by the use of indirect (Fourier) imaging due to the lack of availability of direct focusing optics, but technological advances now make direct focusing accessible in the HXR regime (as evidenced by the NuSTAR spacecraft and several suborbital missions). The FOXSI rocket experiment develops and optimizes HXR focusing telescopes for the unique scientific requirements of the Sun. To date, FOXSI has completed two successful flights on 2012 November 02 and 2014 December 11 and is funded for a third flight. This paper gives a brief overview of the experiment, which is sensitive to solar HXRs in the 4-20 keV range, describes its first two flights, and gives a preview of plans for FOXSI-3.

Original languageEnglish (US)
Title of host publicationSpace Telescopes and Instrumentation 2016
Subtitle of host publicationUltraviolet to Gamma Ray
EditorsMarshall Bautz, Tadayuki Takahashi, Jan-Willem A. den Herder
ISBN (Electronic)9781510601895
StatePublished - 2016
EventSpace Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray - Edinburgh, United Kingdom
Duration: Jun 26 2016Jul 1 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherSpace Telescopes and Instrumentation 2016: Ultraviolet to Gamma Ray
Country/TerritoryUnited Kingdom

Bibliographical note

Funding Information:
The FOXSI rocket team gratefully acknowledges NASA's LCAS program for funding the experiment, specifically NASA grants NNX08AH42G and NNX11AB75G. FOXSI-1 was also aided by NASA GSRP fellowship NNX09AM40H. The UMN team members thank the NSF for its support of space physics at UMN via a faculty development grant AGS-1429512. The team is grateful to JAXA/ISAS for the donation of detectors, ASICs, and abundant expertise, and to the NSROC teams at WSMR and Wallops for the excellent operation of their systems.

Publisher Copyright:
© 2016 SPIE.


  • The Sun
  • X-ray focusing optics
  • hard X-rays
  • solar ares
  • sounding rocket


Dive into the research topics of 'The FOXSI solar sounding rocket campaigns'. Together they form a unique fingerprint.

Cite this