{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "## Simple Templates Fitting of a Quasar SED in Sherpa" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "Sherpa can use the template models and combined them with the other models. Here we show a simple template fitting to the SED of a quasar.\n", "A set of accretion disk spectral models with the standard parameters (mass, accretion rate, inclination anlge) has been stored in the subdirectory Templates. table.txt ascii file index these spectra as required for Sherpa. " ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "First import Sherpa packages" ] }, { "cell_type": "code", "execution_count": 1, "metadata": {}, "outputs": [], "source": [ "from sherpa.astro.ui import *" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "Define the optimization method and load the ascii data file ( $\\log {\\nu}, \\log {\\nu F_{\\nu}}$, $1\\sigma$ errors), plot the data and set the data filter. The SED covers broad-band and we filter the data to include only the optical-UV part for fitting with the disk models." ] }, { "cell_type": "code", "execution_count": 2, "metadata": {}, "outputs": [ { "data": { "image/png": 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\n", "text/plain": [ "
" ] }, "metadata": { "needs_background": "light" }, "output_type": "display_data" } ], "source": [ "set_method('simplex')\n", "load_ascii('3098_errors.dat', ncols=3, dstype=Data1D)\n", "plot_data()\n", "notice(13.5,16.)" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "Input template model defined via an ascii index file table.txt. The model name for Sherpa session is required and given as 'tbl' in this initial step. set_model() assignes the template model to the SED data. get_model() brings the information about the initial model parameters, which are based on the first entry in the table.txt index file." ] }, { "cell_type": "code", "execution_count": 3, "metadata": {}, "outputs": [ { "data": { "text/html": [ "
<Template model instance 'template.tbl'>
" ], "text/plain": [ "