209 citations · 2.4k across the 94 of their papers we have counts for
12 papers · 1 filter
Broadband Quasi-Periodic Radio and X-ray Pulsations in a Solar Flare
G. D. Fleishman, T. S. Bastian, D. E. Gary
We describe microwave and hard X-ray observations of strong quasiperiodic pulsations from the GOES X1.3 solar flare on 15 June 2003. The radio observations were made jointly by the…
Millisecond microwave spikes: statistical study and application for plasma diagnostics
I. V. Rozhansky, G. D. Fleishman, G. -L. Huang
We analyze a dense cluster of solar radio spikes registered at ~ 4.5 -- 6 GHz by the Purple Mountain Observatory spectrometer (Nanjing, China) operating in the 4.5 -- 7.5 GHz range…
Broadband microwave burst produced by electron beams
A. T. Altyntsev, G. D. Fleishman, G. -L. Huang +1
Theoretical and experimental study of fast electron beams attracts a lot of attention in the astrophysics and laboratory. In the case of solar flares the problem of reliable beam d…
Transition radiation in turbulent astrophysical medium. Application to solar radio bursts
Gregory D. Fleishman, Dale E. Gary, Gelu M. Nita
Modern observations and models of various astrophysical objects suggest that many of their physical parameters fluctuate substantially at different spatial scales. The rich variety…
Diffusive radiation in Langmuir turbulence produced by jet shocks
Gregory D. Fleishman, Igor N. Toptygin
Anisotropic distributions of charged particles including two-stream distributions give rise to generation of either stochastic electric fields (in the form of Langmuir waves, Bunem…
Radio Spectral Evolution of an X-ray Poor Impulsive Solar Flare: Implications for Plasma Heating and Electron Acceleration
T. S. Bastian, G. D. Fleishman, D. E. Gary
We present radio and X-ray observations of an impulsive solar flare that was moderately intense in microwaves, yet showed very meager EUV and X-ray emission. The flare occurred on…
Diffusive Synchrotron Radiation from Pulsar Wind Nebulae
G. D. Fleishman, M. F. Bietenholz
Diffusive Synchrotron Radiation (DSR) is produced by charged particles as they random walk in a stochastic magnetic field. The spectrum of the radiation produced by particles in su…
Diffusive synchrotron radiation from extragalactic jets
Gregory D. Fleishman
Flattenings of nonthermal radiation spectra observed from knots and interknot locations of the jets of 3C273 and M87 in UV and X-ray bands are discussed within modern models of mag…
Generation of Emissions By Fast Particles In Stochastic Media
Gregory D. Fleishman
The review presents basic elements of the theory of electromagnetic emission by nonthermal particles propagating in stochastic media. In particular, general theory and a few specia…
Spatial Evidence for Transition Radiation in a Solar Radio Burst
Gelu M. Nita, Dale E. Gary, Gregory D. Fleishman
Microturbulence, i.e. enhanced fluctuations of plasma density, electric and magnetic fields, is of great interest in astrophysical plasmas, but occurs on spatial scales far too sma…
Radio Emission from Anisotropic Electron Distributions
Gregory D. Fleishman
The effect of pitch-angle anisotropy of fast electrons on generation of nonthermal radio emission is studied. Incoherent gyrosynchrotron radiation is shown to depend strongly on th…
Diffusive Synchrotron Radiation from Relativistic Shocks of Gamma-Ray Burst Sources
Gregory D. Fleishman
The spectrum of electromagnetic emission generated by relativistic electrons scattered on small-scale random magnetic fields, implied by current models of the magnetic field genera…