MySpecFit

A Bayesian inference-based spectral fitting tool for multi-dimensional (time and energy) and multi-wavelength (X-ray and gamma-ray) astrophysical data.

Framework

• Spectrum class: Setting up each set of spectra and detector response as well as the statistics.
• Model class: Setting up models for fitting spectra.
• Fit class: Sampling for model parameters based on Bayesian theory.
• Analyse class: Analyzing the posterior samples to determine the best-fit parameters and goodness.
• Plot class: Plotting the observed and model-predicted spectra.
• Calculate class: Calculating flux based on posterior samples.

Features

• Bayesian inference-based: implemented by MCMC (e.g., emcee) or nested sampling (e.g., multinest)
• Multi-dimensional: enabling the fit of time-evolving spectra with time-involved physical models
• Multi-wavelength: supporting for the joint fitting to multi-wavelength astronomical spectra
• Others: simultaneous fitting of multi-spectra and multi-models, freely combining available models and add new model

Available models

• Empirical models: pl, cpl, band, sbpl, cband, csbpl, dband, dsbpl...
• Physical models: bb, hle...
• Absorption models: phabs, tbabs...