We investigate properties of solar wind-like plasma turbulence using direct numerical simulations. analyze the transition from large, magnetohydrodynamic (MHD) scales to ion characteristic ones two-dimensional hybrid (fluid electrons, kinetic ions) To capture and quantify properties, we apply Karman-Howarth-Monin (KHM) equation for compressible Hall MHD (extended by considering pressure as a te...

An interesting occurrence of a Rossby wave breaking event observed during the VORCORE experiment is presented and explained. Twenty-seven balloons were launched inside the Antarctic polar vortex. Almost all of these balloons evolved in the stratosphere around 500K within the vortex, except the one launched on 28 October 2005. In this case, the balloon was caught within a tongue of high potentia...

original article   introduction: wind-turbine noise emission and its environmental impact are considerable issues nowadays. considering the importance of the issue, the purpose of this study was to prepare noise map and wind turbines sound characteristics on the largest wind farm of iran. method: this study was carried out in two phases:1) in order to prepare the daytime sound level (ld) noise ...

ABSTRACT We present the polarization profiles of 22 pulsars in globular cluster 47 Tucanae using observations from MeerKAT radio telescope at UHF band (544–1088 MHz) and report precise values dispersion measure (DM) rotation (RM). use these measurements to investigate presence turbulence electron density magnetic fields. The structure function DM shows a break ∼30 arcsec (∼0.6 pc distance Tucan...

Wind models of very massive stars with metallicities in a range from 10−4 to 1.0 solar are calculated using a new treatment of radiation driven winds with depth dependent radiative force multipliers and a comprehensive list of more than two million of spectral lines in NLTE. The models are tested by a comparison with observed stellar wind properties of O stars in the Galaxy and the SMC. Satisfy...

For marine top predators like seabirds, the oceans represent a multitude of habitats regarding oceanographic conditions and food availability. Worldwide, these marine habitats are being altered by changes in climate and increased anthropogenic impact. This is causing a growing concern on how seabird populations might adapt to these changes. Understanding how seabird populations respond to fluct...

Vela X is a pulsar wind nebula (PWN) associated with the active pulsar B0833-45 and contained within the Vela supernova remnant (SNR). A collimated X-ray filament (“cocoon”) extends south-southwest from the pulsar to the center of Vela X. VLA observations uncovered radio emission coincident with the eastern edge of the cocoon and H.E.S.S. has detected TeV γ-ray emission from this region as well...