Lyman-alpha Radiation Pressure in the Heliosphere: Results from a 3D Monte Carlo Radiative Transfer Simulation
Lyman-alpha Radiation Pressure in the Heliosphere: Results from a 3D Monte Carlo Radiative Transfer Simulation
复制标题
日光层中的莱曼-α 辐射压力:3D 蒙特卡罗辐射传输模拟的结果
DOI:
10.1088/1742-6596/642/1/012007
复制
发表时间:
2015
期刊:
影响因子:
--
通讯作者:
K. Scherer
中科院分区:
文献类型:
--
作者:
B. Fayock;G. P. Zank;J. Heerikhuisen;C. R. Gilbert;K. Scherer
Global models of the heliosphere and its interaction with the local interstellar medium have evolved to fit spacecraft observations since the beginning of their development. It is now understood that neutral hydrogen plays a very important role in the modification of the shape and location of the heliopause. Comparisons of simulations to observations have often led to the need for a more accurate treatment of a particular process. We bring attention to a long-held assumption that radiation pressure on neutral hydrogen atoms due to Lyman-alpha absorption and emission falls off with heliocentric distance at the same rate as solar gravitation. These have generally been combined into a single term. Through our Monte Carlo simulation of Lyman-alpha radiative transfer in the heliosphere, we show that the radiation pressure 1) falls off at a slower rate than r-2 and 2) is not isotropic. We find that the radiation pressure in the upwind direction falls off with heliocentric distance with a power of approximately-1.80 between~ 6 and 75 AU, while the downwind direction falls of with a much slower rate and more variability over heliocentric distance. We discuss our methods and results as well as the implications below.
登录
查看更多内容
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
H. Pauls;G. Zank
通讯作者:
G. Zank
DOI:
--
发表时间:
2013
期刊:
影响因子:
--
作者:
G. Zank;J. Heerikhuisen;Brian E. Wood;N. Pogorelov;E. Zirnstein;D. McComas
通讯作者:
D. McComas
DOI:
--
发表时间:
1996
期刊:
影响因子:
--
作者:
H. Scherer;H. Fahr
通讯作者:
H. Fahr
DOI:
10.1111/j.1365-2966.2011.19144.x
发表时间:
2011-09
影响因子:
4.8
作者:
H. Washimi;G. Zank;Q. Hu;Takashi Tanaka;K. Munakata;H. Shinagawa
通讯作者:
H. Washimi;G. Zank;Q. Hu;Takashi Tanaka;K. Munakata;H. Shinagawa
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
E. Zirnstein;J. Heerikhuisen;G. Zank;N. Pogorelov;D. McComas;M. Desai
通讯作者:
M. Desai