Search Publications
Nonlinear model to study filamentation instability of circularly polarized dispersive Alfvén waves in solar wind plasmas
Sharma, R. P.; Sharma, Swati; Mishra, M. K.
This paper examines the small-scale solar wind turbulence driven in view of the Alfvén waves subjected to ponderomotive nonlinearity. Filamentation instability is known to take place for the case of dispersive Alfvén wave (DAW) propagating parallel to the ambient magnetic field. The ponderomotive force associated with DAW is responsible for wave l…
A two-fluid modeling of kinetic Alfvén wave turbulence
Moon, Y. -J.; Sharma, R. P.; Dwivedi, Navin Kumar +1 more
We present an analytical model to explore the magnetic field turbulent spectrum by coupled high-frequency kinetic Alfvén wave (KAW) and slow mode of Alfvén wave (AW). The spectrum is computed as a realization of energy cascades from larger to smaller scales for a specific case of solar wind plasma at 1 AU. A two-fluid technique is implemented for …
Optical spectroscopic observations of gamma-ray blazar candidates. VII. Follow-up campaign in the southern hemisphere
Masetti, N.; Jiménez-Bailón, E.; Cheung, C. C. +15 more
Searching for low energy counterparts of
The distance to the Galactic center determined by G, K, and M stars
Branham, Richard L.
The distance from the Sun to the center of the Galaxy
The cislunar low-thrust trajectories via the libration point
Qu, Qingyu; Xu, Ming; Peng, Kun
The low-thrust propulsion will be one of the most important propulsion in the future due to its large specific impulse. Different from traditional low-thrust trajectories (LTTs) yielded by some optimization algorithms, the gradient-based design methodology is investigated for LTTs in this paper with the help of invariant manifolds of
Metallicity calibration and photometric parallax estimation: II. SDSS photometry
Bilir, S.; Ak, T.; Karaali, S. +4 more
We used the updated [Fe/H] abundances of 168 F-G type dwarfs and calibrated them to a third order polynomial in terms of reduced ultraviolet excess,
Electron acceleration in the near-Earth magnetotail: test particle calculations in electromagnetic fields from two-dimensional hybrid simulations
Wu, Mingyu; Du, Aimin; Guo, Zhifang
Electron acceleration in the near-Earth magnetotail during the substorm period is still an unresolved question. In this paper, by tracing electron trajectories in the dynamically evolving electromagnetic fields obtained from a two-dimensional (2D) global hybrid simulation, we investigate electron acceleration in the near-Earth magnetotail during d…
Double-cusp simulation during northward IMF using 3D PIC global code
Esmaeili, Amin; Kalaee, Mohammad Javad
The cusp has important effects on the transportation of particles and their energy from the solar wind to the magnetosphere, and ionosphere, and high-altitude atmosphere. The cusp can be considered to be a part of the magnetospheric boundary layer with weaker magnetic fields. It has been studied since 1971 by different satellite observations. Desp…
Study of the early phase of a Coronal Mass Ejection driven shock in EUV images
Susino, Roberto; Frassati, Federica; Mancuso, Salvatore +1 more
The November 1st, 2014 prominence eruption (associated with a C2.7 class flare) resulted in a fast, partial-halo Coronal Mass Ejection (CME). During its early propagation, the CME produced a type II radio burst (seen by the Bruny Island Radio Spectrometer) starting around 04:57 UT when the front entered into the LASCO/C2 field of view (FOV) and th…
Study of BL Lac objects in far infrared and submillimetre region
Seal Braun, P.
Here 35 BL Lac objects are studied from far infrared to submillimetre region (60 µm–850 µm) using the observational data from IRAS, ISO and SCUBA. Twelve Fanaroff–Riley radio galaxies are also studied for comparison. Using the flux densities at the far infrared and submillimetre bands, the luminosities, dust temperatures and dust masse…