کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1768454 | 1020226 | 2006 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Detection of meteors and sub-relativistic dust grains by the fluorescence detectors of ultra high energy cosmic rays
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Detection of meteors and sub-relativistic dust grains by the fluorescence detectors of ultra high energy cosmic rays Detection of meteors and sub-relativistic dust grains by the fluorescence detectors of ultra high energy cosmic rays](/preview/png/1768454.png)
چکیده انگلیسی
Fluorescence detectors of ultra high energy cosmic rays (UHECR) allow to record not only the extensive air showers, initiated by the UHECR particles, but also to detect light, produced by meteors and by the fast dust grains. It is shown that the fluorescence detector operated at the mountain site can register signals from meteors with kinetic energy threshold of about 25 J (meteor mass â¼Â 5 Ã 10â6 g, velocity â¼Â 3 Ã 106 cm/s). The same detector might be used for recording of the dust grains of smaller mass (of about 10â10 g) but with velocity 109 cm/s, close to the light velocity (sub-relativistic dust grains). The light signal from a sub-relativistic dust grain is expected in much shorter time scale (â¼0.001 s), in comparison with the meteor signal (â¼0.1-1 s), and much longer than duration of the UHECR signals (tens of μs). The fluorescence detector capable to register various phenomena: from meteors to UHECR - should have a variable pixel and selecting system integration time. A study of the new phenomenon of sub-relativistic grains will help to understand the mechanism of particle and dust grain acceleration in astrophysical objects (in SN explosions, for example).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advances in Space Research - Volume 37, Issue 10, 2006, Pages 1868-1875
Journal: Advances in Space Research - Volume 37, Issue 10, 2006, Pages 1868-1875
نویسندگان
B.A. Khrenov, V.P. Stulov,