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TC-1卫星在近地磁尾观测到的持续尾向流事件
亚暴膨胀相突发 偶极化 南向行星际磁场 尾向流
2013/9/29
2004年7月11日ACE卫星、Imagine卫星和TC-1卫星联合观测到伴随有持续尾向流的亚暴过程. TC-1卫星在近地磁尾晨侧观测到的磁尾亚暴过程有三个阶段: 增长相过程(11:43~12:19), 预膨胀过程(12:19~12:28)和偶极化过程. Imagine卫星在12:26观测到极光突然增亮; 2 min后偶极化过程发生. 尾向流的持续时间约45 min, 经历了增长相和预膨胀相. 随...
利用CHAMP卫星磁场测量数据, 研究2003年11月超强磁暴期间顶部电离层全球大尺度场向电流分布特征及行星际条件的控制作用. 结果表明: (1) 磁暴期间场向电流密度比平静期大大增强, 昼与夜及冬与夏半球不对称; (2) 发现沿纬度积分的场向电流密度主要受太阳风动力学压强而不是行星际磁场的控制; (3) 磁暴期间场向电流低纬边界向赤道扩展, 最低可达45°MLat; 向阳侧此扩展直接受南向行星际...
Some Results on the Evolution of Primordial Black Holes
Primordial Black Holes primordial formation
2010/10/18
We briefly review some recent results related to thermodynamics of semiclassical black holes applied to their primordial formation. Issues on the existence of an influx of ambient particles onto the P...
Lensing Magnification and QSO-Galaxy Cross-Correlations: Observations, Theory and Simulations
Lensing Magnification QSO-Galaxy Cross-Correlations Theory
2010/10/18
We review observations and gravitational lensing theory related to the magnification of background QSOs by intervening overdensities, and the induced cross-correlation between sources and foreground g...
Light on Dark Matter: Gravitational Lensing by Galaxy Clusters
Dark Matter Gravitational Lensing Galaxy Clusters
2010/10/18
I discuss the use the weak gravitational lensing effect to study the mass distribution and dynamical state of a sample of 24 X-ray luminous clusters of galaxies. By comparing the mass and light distri...
Using the Campbell-Magaard theorem we show that any analytic spacetime can be locally embedded into the Cauchy development of legitimate initial data for the five dimensional vacuum Einstein equations...
Conserved Gravitational Charges, Locality and the Holographic Weyl Anomaly - a Fresh Viewpoint
Gravitational Charges the Holographic Weyl Anomaly asymptotic isometries
2010/10/18
Since the proposal of the AdS/CFT correspondence, made by Maldacena and Witten, there has been some controversy about the definition of conserved Noether charges associated with asymptotic isometries ...
Solutions for Klein-Gordon Equation in Randall-Sundrum-Kerr Scenario
Klein-Gordon Equation Randall-Sundrum-Kerr Scenario
2010/10/18
We study the scalar perturbations of rotating black holes in framework of extra dimensions type Randall-Sundrum(RS).
Renormalization Group in Curved Space and the Problem of Conformal Anomaly
Renormalization Group Curved Space Conformal Anomaly
2010/10/18
Renormalization Group (RG) is a powerful method for investigating quantum effects of matter fields on curved background. The formalism of RG in curved space is well known since 1984, but its applicati...
Elementary Particles under the Lens of the Black Holes
Elementary Particles the Lens of the Black Holes
2010/10/18
After a brief review of the historical development and CLASSICAL properties of the BLACK HOLES, we discuss how our present knowledge of some of their QUANTUM properties shed light on the very concept ...
Hypersonic Flow of Rarefied Gas Near the Brazilian Satellite During its Reentry into Atmosphere
Rarefied Gas the Brazilian Satellite Atmosphere
2010/10/28
To calculate aerothermodynamic characteristics of the Brazilian satellite SARA (Portuguese abbreviation: SAt´elite de Reentrada Atmosf´erica) during its re-entry the Direct Simulation Mont...
Interplanetary Shock Parameters during Solar Activity Maximum (2000) and Minimum (1995-1996)
Interplanetary Shock Parameters Solar Activity Maximum
2010/10/27
Interplanetary shock parameters are analyzed for solar maximum (year 2000) and solar minimum (years 1995-1996) activity. Fast forward shocks are the most usual type of shock observed in the interplane...