Galactic cosmic ray radiation hazard in the unusual extended solar minimum between solar cycles 23 and 24
نویسندگان
چکیده
منابع مشابه
The Unusual Behavior of Anomalous and Galactic Cosmic Ray Intensities at 1 AU During the Present Solar Minimum
Since the early 1970’s, anomalous cosmic ray (ACR) intensities at 1 AU at solar minimum have generally tracked the galactic cosmic ray (GCR) intensities as measured by neutron monitors. Throughout the current A 0 cycle, however, the ACR intensities are a factor of 3–4 lower than expected from scaling neutron monitor rates; a similar discrepancy seems to have been present during the last A 0 per...
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We analyze coronal holes present on the Sun during the extended minimum between Cycles 23 and 24, study their evolution, examine the consequences for the solar wind speed near the Earth, and compare it with the previous minimum in 1996. We identify coronal holes and determine their size and location using a combination of EUV observations from SOHO/EIT and STEREO/EUVI and magnetograms. We find ...
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Christopher J. Mertens1, Brian T. Kress2, Michael Wiltberger3, W. Kent Tobiska4, Barbara Grajewski5 and Xiaojing Xu6 1NASA Langley Research Center, Hampton, Virginia 2Dartmouth College, Hanover, New Hampshire 3 High Altitude Observatory, National Center for Atmospheric Research, Boulder, Colorado 4 Space Environment Technologies, Pacific Palisades, California 5National Institute for Occupationa...
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The three telescopes identify particle energy and type by various techniques. Energy loss and range, which provide the identification of protons (1 to 300 MeV), alpha particles (4 to 1200 MeV) and electrons (1 to 500 MeV), are measured in a stack of silicon solid state detectors and tungsten absorbers in the NE-Range telescope, while the identification of protons (350 to 1000 MeV), alpha partic...
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Solar wind variability spans a wide range of amplitudes and timescales, from turbulent fluctuations to the 11 year solar cycle. We apply the data quantile-quantile (DQQ) method to NASA/Wind observations spanning solar cycles 23 and 24, to study how the uniqueness of each cycle maximum and minimummanifests in the changing statistical distribution of plasma parameters in fast and slow solar wind....
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ژورنال
عنوان ژورنال: Space Weather
سال: 2010
ISSN: 1542-7390
DOI: 10.1029/2010sw000567