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Context. Periodicities have frequently been reported across many wavelengths in the solar corona. Correlated periods of ~5 min, comparable to solar p-modes, are suggestive of coupling between the photosphere and the corona.
Published by: Astronomy and Astrophysics Published on: 06/2021
YEAR: 2021   DOI: 10.1051/0004-6361/202039510
Sun: radio radiation; Sun: corona; Sun: X-rays; gamma rays; Sun: oscillations; magnetic reconnection; radiation mechanisms: non-thermal; Astrophysics - Solar and Stellar Astrophysics; Physics - Space Physics; Parker Data Used
The Smithsonian Astrophysical Observatory (SAO) in collaboration with Stanford Research Institute (SRI) has been developing monolithic CMOS detectors for use as astronomical soft X-ray imaging spectrometers since 2008. The long term goal of this collaboration is to produce X-ray Active Pixel Sensor (APS) detectors with Fano limited performance over the 0.1-10keV band for "Facility Class" missions such as Lynx. Since CMOS x-ray imagers consume very little power; are inherently "radiation hard"; have high levels of integration ...
Published by: Proceedings of SPIE - The International Society for Optical Engineering Published on:
Cameras; CMOS integrated circuits; gamma rays; MOS devices; Neutron detectors; Particle beams; Photons; Pixels; Silicon wafers; Small satellites; Space optics; Spectrometers; X rays; Parker Engineering
A method to estimate the total fluence of solar flare neutrons at a spacecraft traveling in the innermost part of the heliosphere (at heliocentric radial distances of \<1 AU) is presented. The results of the neutron production and emissivity codes of Hua and Lingenfelter (1987a, 1987b) scaled to one of the largest solar neutron events ever observed at the Earth are used to derive a conservative estimate of the energy spectrum of neutrons emitted from the Sun after a large solar flare. By taking into account the surviva ...
Published by: Space Weather Published on: 03/2012
YEAR: 2012   DOI: 10.1029/2011SW000732