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The Globe Orbiting Soft X-ray (GOSoX) polarimeter concept study

Marshall, Herman L. and Heine, Sarah N. T. and Davidson, Rosemary and Garner, Alan and Gullikson, Eric M. and Günther, H. Moritz and Leitz, Christopher and Masterson, Rebecca and Miller, Eric D. and Stenzel, June S. and Zhang, William W. and Boissay-Malaquin, Rozenn and Caiazzo, Ilaria and Chakrabarty, Deepto and Gallo, Luigi C. and Heilmann, Ralf K. and Heyl, Jeremy and Kara, Erin and Schulz, Norbert S. (2021) The Globe Orbiting Soft X-ray (GOSoX) polarimeter concept study. In: Optics for EUV, X-Ray, and Gamma-Ray Astronomy X. Proceedings of SPIE. No.11822. Society of Photo-Optical Instrumentation Engineers , Bellingham, WA, Art. No. 118220O. ISBN 9781510644823.

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We describe an implementation of a broad-band soft X-ray polarimeter, substantially based on previous designs. The Globe-Orbiting Soft X-ray Polarimeter (GOSoX) is a SmallSat. As in a related mission concept the PiSoX Polarimeter, the grating arrangement is designed optimally for the purpose of polarimetry matching the dispersion of a spectrometer to a laterally graded multilayer (LGML). For GOSoX, the optics are lightweight Si mirrors in a one-bounce parabolic configuration. The instrument covers the wavelength range from 31 A to 75 A (165 - 400 eV). Upon satellite rotation, the intensities of the dispersed spectra, after reflection and polarizing by the LGMLs, give the three Stokes parameters needed to determine a source's linear polarization fraction and orientation. The design can be extended to higher energies as LGMLs are developed further. We describe the potential scientific return and the proposed mission concept following the results of a JPL Team X concept study.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Marshall, Herman L.0000-0002-6492-1293
Zhang, William W.0000-0002-1426-9698
Caiazzo, Ilaria0000-0002-4770-5388
Chakrabarty, Deepto0000-0001-8804-8946
Heilmann, Ralf K.0000-0001-9980-5295
Heyl, Jeremy0000-0001-9739-367X
Kara, Erin0000-0003-0172-0854
Additional Information:© 2021 Society of Photo-Optical Instrumentation Engineers (SPIE). Support for this work was provided in part through NASA grants 80NSSC20K1249, NNH18ZDA001N, and NNX15AL14G. Laboratory supplies and equipment were funded in part through the MIT Kavli Research Investment Fund. Support for this work was also provided in part through NASA grant NNX17AG43G and Smithsonian Astrophysical Observatory (SAO) contract SV3-73016 to MIT for support of the Chandra X-Ray Center (CXC), which is operated by SAO for and on behalf of NASA under contract NAS8-03060. We thank the JPL Team X group, led by Alfred Nash, for their work on the GOSoX concept study. We also thank the students of MIT’s AeroAstro course 16.851 who worked on the GOSoX concept, especially in the areas of requirements and operations.
Funding AgencyGrant Number
Massachusetts Institute of Technology (MIT)UNSPECIFIED
Smithsonian Astrophysical ObservatorySV3-73016
Subject Keywords:X-ray, polarimeter, astronomy, multilayer, mirror, grating
Series Name:Proceedings of SPIE
Issue or Number:11822
Record Number:CaltechAUTHORS:20220622-517967900
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Official Citation:Herman L. Marshall, Sarah N. T. Heine, Rosemary Davidson, Alan Garner, Eric M. Gullikson, H. Moritz Günther, Christopher Leitz, Rebecca Masterson, Eric D. Miller, June S. Stenzel, William W. Zhang, Rozenn Boissay-Malaquin, Ilaria Caiazzo, Deepto Chakrabarty, Luigi G. Gallo, Ralf K. Heilmann, Jeremy Heyl, Erin Kara, and Norbert S. Schulz "The Globe Orbiting Soft X-ray (GOSoX) polarimeter concept study", Proc. SPIE 11822, Optics for EUV, X-Ray, and Gamma-Ray Astronomy X, 118220O (23 August 2021);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:115238
Deposited By: Tony Diaz
Deposited On:22 Jun 2022 22:28
Last Modified:28 Jun 2022 18:56

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