3D propagation of relativistic solar protons through interplanetary space
3D propagation of relativistic solar protons through interplanetary space
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相对论性太阳质子通过行星际空间的 3D 传播
DOI：
10.1051/0004-6361/201937338
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发表时间：
2020
影响因子：
6.5
通讯作者：
Dalla S
中科院分区：
文献类型：
--
作者：
Dalla S
太阳高能粒子（SEP）的能量在GeV范围内，可以从太阳附近的加速区域传播到地球，并产生地面增强（GLE）。解释和模拟GLE观测的传统方法假设粒子传播仅平行于行星际空间的磁场线，即空间一维传播。PAMELA最近的测量，其特征在于SEP属性在1 Au为100 MeV-1 GeV的范围内，在高光谱resolution.AimsWe模型的GLE能量太阳质子的运输使用3D的方法来评估的日光层电流片（HCS）的影响和漂移相关的梯度和曲率的帕克螺旋。我们推导出1个Au观测值，并将模拟结果与PAMELA.MethodsWe的数据进行比较，我们使用一个三维测试粒子模型，包括HCS。单能人口的研究首先获得一个定性的图片的传播模式和数量的交叉点的1 Au球。幂律注入的模拟被用来获得在1 Au的强度分布和注量谱。模拟一个特定的事件，GLE 71，用于比较目的与PAMELA data.Results1 Au的交叉点和每个粒子的平均交叉数的空间图案的强烈影响，由3D效果，具有显着的差异之间的期间ofA+和A-极性。1 Au强度分布的衰减时间常数取决于观察者的位置，并且它不是如在1D模型中的平均自由程的简单函数。来自注入通量管的能量依赖性泄漏对于GLE能量粒子特别重要，导致光谱中的翻转。
ContextSolar energetic particles (SEPs) with energy in the GeV range can propagate to Earth from their acceleration region near the Sun and produce ground level enhancements (GLEs). The traditional approach to interpreting and modelling GLE observations assumes particle propagation which is only parallel to the magnetic field lines of interplanetary space, that is, spatially 1D propagation. Recent measurements by PAMELA have characterised SEP properties at 1 AU for the ∼100 MeV–1 GeV range at high spectral resolution.AimsWe model the transport of GLE-energy solar protons using a 3D approach to assess the effect of the heliospheric current sheet (HCS) and drifts associated to the gradient and curvature of the Parker spiral. We derive 1 AU observables and compare the simulation results with data from PAMELA.MethodsWe use a 3D test particle model including a HCS. Monoenergetic populations are studied first to obtain a qualitative picture of propagation patterns and numbers of crossings of the 1 AU sphere. Simulations for power law injection are used to derive intensity profiles and fluence spectra at 1 AU. A simulation for a specific event, GLE 71, is used for comparison purposes with PAMELA data.ResultsSpatial patterns of 1 AU crossings and the average number of crossings per particle are strongly influenced by 3D effects, with significant differences between periods ofA+andA−polarities. The decay time constant of 1 AU intensity profiles varies depending on the position of the observer and it is not a simple function of the mean free path as in 1D models. Energy dependent leakage from the injection flux tube is particularly important for GLE energy particles, resulting in a rollover in the spectrum.
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DOI：
10.1088/0004-637x/761/2/101
发表时间：
2012-11
期刊：
The Astrophysical Journal
影响因子：
--
作者：
Ken McCracken;H. Moraal;M. Shea
通讯作者：
Ken McCracken;H. Moraal;M. Shea
DOI：
10.3847/1538-4357/aacc26
发表时间：
2018-07
期刊：
The Astrophysical Journal
影响因子：
--
作者：
A. Bruno;G. Bazilevskaya;M. Boezio;E. Christian;G. Nolfo;M. Martucci;M. Mergé;V. Mikhailov;R. Munini;Ian G. Richardson;Ian G. Richardson;James Ryan;S. Stochaj;O. Adriani;G. Barbarino;R. Bellotti;É. Bogomolov;M. Bongi;V. Bonvicini;S. Bottai;F. Cafagna;D. Campana;P. Carlson;M. Casolino;G. Castellini;C. Santis;V. Felice;A. Galper;A. Karelin;S. Koldashov;S. Koldobskiy;S. Krutkov;A. Kvashnin;A. Leonov;V. Malakhov;L. Marcelli;A. Mayorov;W. Menn;E. Mocchiutti;A. Monaco;N. Mori;G. Osteria;B. Panico;P. Papini;M. Pearce;P. Picozza;M. Ricci;S. Ricciarini;M. Simon;R. Sparvoli;P. Spillantini;P. Spillantini;Y. Stozhkov;A. Vacchi;E. Vannuccini;G. Vasilyev;S. Voronov;Y. Yurkin;G. Zampa;N. Zampa
通讯作者：
A. Bruno;G. Bazilevskaya;M. Boezio;E. Christian;G. Nolfo;M. Martucci;M. Mergé;V. Mikhailov;R. Munini;Ian G. Richardson;Ian G. Richardson;James Ryan;S. Stochaj;O. Adriani;G. Barbarino;R. Bellotti;É. Bogomolov;M. Bongi;V. Bonvicini;S. Bottai;F. Cafagna;D. Campana;P. Carlson;M. Casolino;G. Castellini;C. Santis;V. Felice;A. Galper;A. Karelin;S. Koldashov;S. Koldobskiy;S. Krutkov;A. Kvashnin;A. Leonov;V. Malakhov;L. Marcelli;A. Mayorov;W. Menn;E. Mocchiutti;A. Monaco;N. Mori;G. Osteria;B. Panico;P. Papini;M. Pearce;P. Picozza;M. Ricci;S. Ricciarini;M. Simon;R. Sparvoli;P. Spillantini;P. Spillantini;Y. Stozhkov;A. Vacchi;E. Vannuccini;G. Vasilyev;S. Voronov;Y. Yurkin;G. Zampa;N. Zampa
DOI：
10.3847/1538-4357/aaa3fa
发表时间：
2017-12
期刊：
The Astrophysical Journal
影响因子：
--
作者：
M. Battarbee;S. Dalla;M. Marsh
通讯作者：
M. Battarbee;S. Dalla;M. Marsh
DOI：
--
发表时间：
2006
期刊：
影响因子：
--
作者：
C. Pei;J. R. Jokipii;J. Giacalone
通讯作者：
J. Giacalone
3D 太阳高能粒子传播模型（包括漂移）中 Fe/O 比率的时间依赖性
DOI：
10.48550/arxiv.1606.05612
发表时间：
2016
期刊：
--
影响因子：
--
作者：
Dalla S
通讯作者：
Dalla S