Ultimate Fast Gyrosynchrotron Codes

Abstract

The past decade has seen a dramatic increase of practical applications of the microwave gyrosynchrotron emission for plasma diagnostics and three-dimensional modeling of solar flares and other astrophysical objects. This break-through turned out to become possible due to apparently minor, technical development of Fast Gyrosynchrotron Codes, which enormously reduced the computation time needed to calculate a single spectrum, while preserving accuracy of the computation. However, the available fast codes are limited in that they could only be used for a factorized distribution over the energy and pitch-angle, while the distributions of electrons over energy or pitch-angle are limited to a number of predefined analytical functions. In realistic simulations, these assumptions do not hold; thus, the codes free from the mentioned limitations are called for. To remedy this situation, we extended our fast codes to work with an arbitrary input distribution function of radiating electrons. We accomplished this by implementing fast codes for a distribution function described by an arbitrary numerically-defined array. In addition, we removed several other limitations of the available fast codes and improved treatment of the free-free component. The Ultimate Fast Codes presented here allow for an arbitrary combination of the analytically and numerically defined distributions, which offers the most flexible use of the fast codes. We illustrate the code with a few simple examples.

15 pages, 8 figures, ApJ accepted

References in corpus (9)

• Electron Acceleration during Macroscale Magnetic Reconnection
• 3D Radio and X-Ray Modeling and Data Analysis Software: Revealing Flare Complexity
• Three-dimensional Forward-fit Modeling of the Hard X-Ray and the Microwave Emissions of the 2015 June 22 M6.5 Flare
• Gyroresonance and free-free radio emissions from multi-thermal multi-component plasma
• A Large-scale Plume in an X-Class Solar Flare
• Spatio-temporal energy partitioning in a non-thermally dominated two-loop solar flare
• Coronal Heating Law Constrained by Microwave Gyroresonant Emission
• Energy budget of plasma motions, heating, and electron acceleration in a three-loop solar flare
• Predicting the time variation of radio emission from MHD simulations of a flaring T-Tauri star

Cited by in corpus (4)

• Data-Constrained Solar Modeling with GX Simulator
• A search for thermal gyro-synchrotron emission from hot stellar coronae
• Deciphering Faint Gyrosynchrotron Emission from Coronal Mass Ejection using Spectro-polarimetric Radio Imaging
• Multifrequency microwave imaging of weak transients from the quiet solar corona