Studies of X-ray observations from PIXIE |
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| Institution: | 1. Lockheed Martin Advanced Technology Center, 3251 Hanover Street, Palo Alto, CA 94304-1181, USA;2. Space Science Applications Laboratory, The Aerospace Corporation, El Segundo, CA 90245-4691, USA;1. Centre for Theoretical Physics, Jamia Millia Islamia, New Delhi 110025, India;2. Multidisciplinary Centre for Advanced Research and Studies (MCARS), Jamia Millia Islamia, New Delhi 110025, India;3. Astrophysics and Cosmology Research Unit, School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Private Bag X54001, Durban 4000, South Africa;1. Lawrence Berkeley National Lab, Berkeley, CA, USA;2. University of Davis, Davis, CA, USA;3. University of California, Berkeley, CA, USA;4. University of California, Santa Cruz, CA, USA;1. Department of Engineering, Lancaster University, Lancaster, LA1 4YW, UK;2. Radiometric Systems Group, Sellafield Ltd, Seascale, CA20 1PG, UK |
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| Abstract: | The Polar Ionospheric X-ray Imaging Experiment (PIXIE) on board the NASA/GGS POLAR spacecraft has been making observations of ionospheric X-ray emissions from the vantage of space for more than 3 years. A wide variety of observations have been made by PIXIE, which are detailed in this work. These include the local time distribution of the auroral X-ray intensity as well as the dependence of auroral X-rays on geomagnetic activity and solar wind magnetic field conditions. The auroral X-rays are produced as energetic electrons within the magnetosphere precipitate and are stopped in the ionosphere. Comparisons of the X-ray auroral intensity with other instrument observations have been made, which enables us to distinguish between temporal and spatial processes. In addition, several other X-ray features (not of an auroral nature) have been observed by PIXIE, and are described. |
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