高能宇宙射線的加速與傳播(台俄國合計畫); High Energy Cosmic Ray Acceleration and Propagation

NCU Institutional Repository > 理學院 > 天文研究所 > 研究計畫 > Item 987654321/45788

請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/45788

題名:	高能宇宙射線的加速與傳播(台俄國合計畫);High Energy Cosmic Ray Acceleration and Propagation
作者:	黃崇源;高仲明
貢獻者:	天文學研究所
關鍵詞:	高能宇宙射射;粒子加速;X 射線;伽瑪射線;電波輻射;SZ 效應;Ultra high energy cosmic rays;Particle propagation and acceleration;X-ray;gamma-ray;radio emission;Sunyaev-Zeldovich effect;物理類
日期:	2008-09-01
上傳時間:	2010-12-28 15:28:09 (UTC+8)
出版者:	行政院國家科學委員會
摘要:	本計畫將首先分析帶電粒子與電漿作用的運動方程式，並考慮電漿波對帶電粒子的作用運用到星際介質及太陽的狀況．我們將計算運動方程式在不同天文環境下所需的各種參數．同時比較不同粒子加速機制，例如隨機費米二型加速和激波加速機制，在不同天文環境下的效率．我們也將求這些運動方程式在電漿背景中的解析解及數值解．我們會將所得的結果運用到各種天體及天文環境中，並與觀測做比較．我們需要計算從這些加粒子加速區域所產生的非熱輻射和準近熱輻射，並比較計算結果與觀測資料，以決定不同天文環境下的主要加速機制．同時估計與各種觀測結果相符所需的能量．我們主要目的是將這些理論運用在本銀河系及星系團的ｘ射線輻射上．我們也會分析在星系團結果的SZ 效應以作為理論與觀測間的另一驗證。1. Analysis of kinetic equations describing charged particle interaction with electromagnetic plasma fluctuations. 2. Analysis of hydrodynamic equation describing Galactic wind instability. 3. Analysis of ultra high energy cosmic ray escape from galaxies and interpretation of observed spectra. 4. Analysis of plasma waves as applied to the conditions of the interstellar and intracluster media as well as to the conditions of the solar corona. 5. Calculations of parameters of kinetic equations describing particle propagation in the plasmas of solar corona, interstellar medium and halos of galaxy clusters. 6. Particle acceleration by stochastic Fermi II acceleration and by shock wave acceleration. Comparison of efficiency of these mechanisms of acceleration for conditions of astrophysical plasma. 7. Analytical and numerical solution of kinetic equation for particle acceleration from background plasma. 8. Calculations of nonthermal and quasi-thermal emission produced by charged particles in regions of particle acceleration 9. Comparison of observational data with results of numerical acceleration. 10. Determinations from observational data conditions at which processes acceleration take place in the astrophysical plasma. 11. Estimations of energetic of emitting particles necessary to produce observational fluxes of nonthermal emission. 12. Attempts to solve the energetic problem of X-ray emission from halos of galaxy clusters and from the Galactic disk which remains enigmatic and unresolved for many years. 13. Analysis of the Sunyaev-Zeldovich effect in order to find evidences of particle acceleration in halos of galaxy clusters due to distortions of the equilibrium distribution function of background electrons by acceleration processes in intracluster medium. 研究期間：9610 ~ 9709
關聯:	財團法人國家實驗研究院科技政策研究與資訊中心
顯示於類別:	[天文研究所] 研究計畫

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	411	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing

資料載入中.....