On the Estimation of Solar Energetic Particle Injection Timing from Onset Times near Earth
نویسندگان
چکیده
منابع مشابه
Onset Study of Impulsive Solar Energetic Particle Events
Impulsive solar energetic particle (SEP) events are associated with impulsive X-ray flares, energetic electrons, and enhanced heavy ion abundances. Using instruments on ACE, we have examined the composition and origin of twelve impulsive SEP events from November 1997 to June 2000. have enhanced ‘HerHe ratios compared with the solar wind values. All selected impulsive SEP events The range of ‘He...
متن کاملthe effect of traffic density on the accident externality from driving the case study of tehran
در این پژوهش به بررسی اثر افزایش ترافیک بر روی تعداد تصادفات پرداخته شده است. به این منظور 30 تقاطع در شهر تهران بطور تصادفی انتخاب گردید و تعداد تصادفات ماهیانه در این تقاطعات در طول سالهای 89-90 از سازمان کنترل ترافیک شهر تهران استخراج گردید و با استفاده از مدل داده های تابلویی و نرم افزار eviews مدل خطی و درجه دوم تخمین زده شد و در نهایت این نتیجه حاصل شد که تقاطعات پر ترافیک تر تعداد تصادفا...
15 صفحه اولOnsets and spectra of impulsive solar energetic electron events observed near the Earth
Impulsive solar energetic electrons are often observed in the interplanetary space near the Earth and have an attractive diagnostic potential for poorly understood solar flare acceleration processes. We investigate the transport of solar flare energetic electrons in the heliospheric plasma to understand the role of transport to the observed onset and spectral properties of the impulsive solar e...
متن کاملEnergetic Particle Observations Near the Termination Shock
The most recent data from Voyager 1 (V1) show that a second event (TS2), apparently associated with the termination shock (TS), is in progress, with spectral characteristics similar to the energetic particle increase observed from 2002.4 2003.1 (TS1) [1,2]. We concentrate on the pressure, composition, and anisotropy profiles of TS1. The magnetic field pressure [3] is significantly smaller than ...
متن کاملMoments of energetic particle distributions in the solar atmosphere
This paper describes a theory that provides a direct link between observable properties of energetic particle distributions and the unobservable properties of the initial distributions. A general approach is first outlined and then applied to the specific situation of collisional electron transport in the solar atmosphere. By building on previous results, this treatment does not require explici...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2005
ISSN: 0004-637X,1538-4357
DOI: 10.1086/430293