220 citations · 2.8k across the 77 of their papers we have counts for
10 papers · 1 filter
Scale-dependent non-Gaussianities in the WMAP data as identified by using surrogates and scaling indices
C. Raeth, A. J. Banday, G. Rossmanith +5
We present a model-independent investigation of the WMAP data with respect to scale- dependent non-Gaussianities (NGs) by employing the method of constrained randomization. For gen…
Shielding of a small charged particle in weakly ionized plasmas
Manis Chaudhuri, Sergey A. Khrapak, Roman Kompaneets +1
In this paper we present a concise overview of our recent results concerning the electric potential distribution around a small charged particle in weakly ionized plasmas. A number…
Effect of ionization/recombination processes on the electrical interactions between positively charged particles in highly collisional plasmas
M. Chaudhuri, S. A. Khrapak, G. E. Morfill
The effect of ionization and recombination processes on the electrical interactions between a pair of small charged particles in highly collisional plasmas is discussed. In particu…
Agglomeration of microparticles in complex plasmas
Cheng-Ran Du, Hubertus Thomas, Alexei Ivlev +2
Agglomeration of highly charged microparticles was observed and studied in complex plasma experiments carried out in a capacitively coupled rf discharge. The agglomeration was caus…
Instability of ion kinetic waves in a weakly ionized plasma
Roman Kompaneets, Alexei V. Ivlev, Sergey V. Vladimirov +1
The fundamental higher-order Landau plasma modes are known to be generally heavily damped. We show that these modes for the ion component in a weakly ionized plasma can be substant…
Probing non-Gaussianities on Large Scales in WMAP5 and WMAP7 Data using Surrogates
C. Raeth, G. Rossmanith, G. Morfill +2
Probing Gaussianity represents one of the key questions in modern cosmology, because it allows to discriminate between different models of inflation. We test for large-scale non-Ga…
Spontaneous disordering and symmetry breaking in complex plasmas
Sergey K. Zhdanov, Markus H. Thoma, Gregor E. Morfill
Spontaneous symmetry breaking is an essential feature of modern science. We demonstrate that it also plays an important role in the physics of complex plasmas. Complex plasmas can…
Direct observation of mode-coupling instability in two-dimensional plasma crystals
L. Couëdel, V. Nosenko, A. V. Ivlev +3
Dedicated experiments on melting of 2D plasma crystals were carried out. The melting was always accompanied by spontaneous growth of the particle kinetic energy, suggesting a unive…
Acceleration of small astrophysical grains due to charge fluctuations
A. V. Ivlev, A. Lazarian, V. N. Tsytovich +3
We discuss a novel mechanism of dust acceleration which may dominate for particles smaller than m. The acceleration is caused by their direct electrostatic interactions…
Dusty Magnetohydrodynamics in Star Forming Regions
S. Van Loo, S. A. E. G. Falle, T. W. Hartquist +2
Star formation occurs in dark molecular regions where the number density of hydrogen nuclei, nH, exceeds 10^4 cc and the fractional ionization is 10^-7 or less. Dust grains with si…