کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1776240 | 1523606 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the nature of IMF polarity dependent asymmetries in solar wind plasma properties during the minimum of sunspot cycles 23 and 24
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فیزیک زمین (ژئو فیزیک)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: On the nature of IMF polarity dependent asymmetries in solar wind plasma properties during the minimum of sunspot cycles 23 and 24 On the nature of IMF polarity dependent asymmetries in solar wind plasma properties during the minimum of sunspot cycles 23 and 24](/preview/png/1776240.png)
چکیده انگلیسی
The monthly solar wind speed and density observed near 1Â AU in IMF sectors of opposite magnetic polarity are studied during the minimum of sunspot cycles 23 and 24. During sunspot minima, the IMF is pointing away from the sun (Away sector) in the north of the Heliospheric Current Sheet (HCS) and pointing towards the sun (Toward sector) in the south of HCS during odd sunspot cycles and the same process is reversed during the even cycles. During this period, the solar wind plasma parameters (number density and speed) show a systematic month to month variation with solar wind number density decreases and velocity increases from equator to poles (heliomagnetic latitudinal organization) only in 'Away' IMF sectors compared to 'Toward' IMF sectors. This feature is particularly more evident for low speed solar wind and happens in a helio-hemisphere with a larger polar coronal hole. The association of the above phenomena with north-south asymmetry in coronal and solar wind flow characteristics will be discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 140, March 2016, Pages 34-40
Journal: Journal of Atmospheric and Solar-Terrestrial Physics - Volume 140, March 2016, Pages 34-40
نویسندگان
B. Felix Pereira, Bijoy John Philip, T.E. Girish,