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Orbital information for the used data sets. Top panel: Orbits of Earth (green), Mars (orange) and Rosetta (blue) in HCI coordinates. Bottom panel: Heliolatitude in HEE coordinate system, the solid blue line indicates the first Rosetta Earth flyby, the dotted blue line indicates the Mars flyby, the dashed blue line indicates the second Earth flyby and the dashed dotted blue line indicates the third Earth flyby.

Orbital information for the used data sets. Top panel: Orbits of Earth (green), Mars (orange) and Rosetta (blue) in HCI coordinates. Bottom panel: Heliolatitude in HEE coordinate system, the solid blue line indicates the first Rosetta Earth flyby, the dotted blue line indicates the Mars flyby, the dashed blue line indicates the second Earth flyby and the dashed dotted blue line indicates the third Earth flyby.

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Figure 1: Orbital information for the used data sets. Top panel: Orbits...
Figure 2: Cross-calibration between INTEGRAL and Rosetta SREM...
Figure 5: Logarithmic ratio of Rosetta and Integral SREM TC2 data drawn...
Figure 6: Zoom on the INTEGRAL and Rosetta SREM count rates during the...
Figure Annex 1: Anticorrelation of Rosetta and INTEGRAL SREM data with...
Multi-point galactic cosmic rays measurements between 1 and 4.5 AU over a full Solar cycle
Article
Full-text available
  • May 2019
The radiation data collected by the Standard Radiation Environment Monitor (SREM) aboard ESA missions INTEGRAl, ROSETTA, HERSCHEL, PLANCK and PROBA-1, and by the High Energy Neutron Detector (HEND) instrument aboard Mars Odyssey are analysed with an emphasis on characterising Galactic Cosmic Rays (GCRs) in the inner heliosphere. A cross-calibration...
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Figure 1. Orbital information for the used datasets. (a) Orbits of...
Figure 2. Cross calibration between INTEGRAL and Rosetta SREM...
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+4 Figure 5. Logarithmic ratio of Rosetta and INTEGRAL SREM TC2 data drawn...
Multi-point galactic cosmic ray measurements between 1 and 4.5 AU over a full solar cycle
Article
Full-text available
  • Sep 2019
The radiation data collected by the Standard Radiation Environment Monitor (SREM) aboard ESA missions INTEGRAL (INTErnational Gamma-Ray Astrophysics Laboratory), Rosetta, Herschel, Planck and Proba-1, and by the high-energy neutron detector (HEND) instrument aboard Mars Odyssey, are analysed with an emphasis on characterising galactic cosmic rays (...
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Multi-point galactic cosmic ray measurements between 1 and 4.5 AU over a full solar cycle
Article
Full-text available
  • Sep 2019
  • ANN GEOPHYS-GERMANY
The radiation data collected by the Standard Radiation Environment Monitor (SREM) aboard ESA missions INTEGRAL (INTErnational Gamma-Ray Astrophysics Laboratory), Rosetta, Herschel, Planck and Proba-1, and by the high-energy neutron detector (HEND) instrument aboard Mars Odyssey, are analysed with an emphasis on characterising galactic cosmic rays (GCRs) in the inner heliosphere. A cross calibration between all sensors was performed for this study, which can also be used in subsequent works. We investigate the stability of the SREM detectors over long-term periods. The radiation data are compared qualitatively and quantitatively with the corresponding solar activity. Based on INTEGRAL and Rosetta SREM data, a GCR helioradial gradient of 2.96 % AU−1 is found between 1 and 4.5 AU. In addition, the data during the last phase of the Rosetta mission around comet 67P/Churyumov–Gerasimenko were studied in more detail. An unexpected yet unexplained 8 % reduction of the Galactic Comic Ray flux measured by Rosetta SREM in the vicinity of the comet is noted.
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