Multi-point galactic cosmic ray measurements between 1 and 4.5 AU over a full solar cycle
-
Published:2019-09-25
Issue:5
Volume:37
Page:903-918
-
ISSN:1432-0576
-
Container-title:Annales Geophysicae
-
language:en
-
Short-container-title:Ann. Geophys.
Author:
Honig Thomas, Witasse Olivier G., Evans HughORCID, Nieminen Petteri, Kuulkers Erik, Taylor Matt G. G. T., Heber Bernd, Guo JingnanORCID, Sánchez-Cano BeatrizORCID
Abstract
Abstract. 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.
Publisher
Copernicus GmbH
Subject
Space and Planetary Science,Earth and Planetary Sciences (miscellaneous),Atmospheric Science,Geology,Astronomy and Astrophysics
Reference36 articles.
1. Alania, M. V., Modzelewska, R., and Wawrzynczak, A.: Peculiarities of
cosmic ray modulation in the solar minimum 23/24, J. Geophys. Res.-Space, 119, 4164–4174, https://doi.org/10.1002/2013JA019500, 2014. 2. Altwegg, K., Balsiger, H., Bar-Nun, A., Berthelier, J. J., Bieler, A., Bochsler, P., Briois, C., Calmonte, U., Combi, M., De Keyser, J., Eberhardt, P., Fiethe, B., Fuselier, S., Gasc, S., Gombosi, T. I., Hansen, K. C., Hässig, M., Jäckel, A., Kopp, E., Korth, A., LeRoy, L., Mall, U., Marty, B., Mousis, O., Neefs, E., Owen, T., Rème, H., Rubin, M., Sémon, T., Tzou, C. -Y., Waite, H., and Wurz, P.: 67P/ Churyumov-Gerasimenko, a Jupiter family comet with
a high D/H ratio, Science, 347, 1261952, https://doi.org/10.1126/science.1261952, 2015. 3. Badruddin and Kumar, A.: Study of the Cosmic-Ray Modulation During the Passage of ICMEs and CIRs, Sol. Phys., 291, 559–580, https://doi.org/10.1007/s11207-015-0843-4, 2016. 4. Belov, A.: Large scale modulation: view from the earth, Space Sci.
Rev., 93, 79–105, 2000. 5. Boynton, W. V., Feldman, W. C., Mitrofanov, I. G., Evans, L. G., Reedy, R. C., Squyres, S. W., Starr, R., Trombka, J. I., D'Uston, C., Arnold, J. R.,Englert, P. A. J., Metzger, A. E., Wänke, H., Brückner, J., Drake, D. M., Shinohara, C., Fellows, C., Hamara, D. K., Harshman, K., Kerry, K., Turner, C., Ward, M., Barthe, H., Fuller, K. R., Storms, S. A., Thornton, G. W., Longmire, J. L., Litvak, M. L., and Ton'chev, A. K.: The Mars Odyssey gamma-ray spectrometer instrument suite,
Space Sci. Rev., 110, 37–83, https://doi.org/10.1007/978-0-306-48600-5, 2004.
Cited by
26 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献
|
|