# High-z Blazar SED Fitting Results This package contains archival data, MCMC fitting results, and Python scripts for modeling the spectral energy distributions (SEDs) of high-redshift blazars. It is designed to allow reproduction of the analysis and generation of plots for individual sources. --- ## 📂 Contents of the ZIP folder - **DLAcoeff.txt**, **LAFcoeff.txt** Coefficients used in the analytical model of Inoue et al. (2014), MNRAS, 442 for the effective opacity to neutral hydrogen in the IGM (https://ui.adsabs.harvard.edu/abs/2014ascl.soft02019I) - **sources.txt** List of sources in the sample (columns: `id`, `name`, `redshift`, `model` [1 = single-component, 2 = two-component]). - **1.txt – 23.txt** Archival observations (photometric data) for each source in the sample. - **\*.h5** MCMC fitting results stored with `emcee.backends.HDFBackend`. - **functions.py** Helper functions used by script.py - **script.py** Main plotting script. Run with: ```bash python script.py [you will be prompted to enter the source id you wish] ⚙️ Requirements This code depends on the following Python packages: numpy pandas matplotlib scipy emcee corner astropy (Python ≥ 3.8 recommended) ▶️ Usage Select a source of interest from sources.txt (using the id column). Run the plotting script with the source ID: python script.py You will be prompted to enter the ID of a source. You will be prompted to enter a number (1-4) for the plot you wish to create (Type 1: chain plot, Type 2: corner plot, Type 3: SED plot, Type 4: All). Output plots are saved in the current directory (or in a plots/ folder, if present). 📊 Outputs Corner plots of posterior distributions (from MCMC fits). SED plots with archival photometry and model results. The code also applies IGM attenuation using the supplied LAFcoeff.txt and DLAcoeff.txt. 🆕 **What’s new in Version 2** 🔭 Updated source list. ⚙️ Improved jet/disk model implementation. 📈 MCMC fitting results recalculated using longer chains. 📚 Citation If you use this material in your work, please cite:Kyriopoulos et al. arxiv (submitted)