Deproject

Deproject is a CIAO Sherpa extension package to facilitate deprojection of two-dimensional circular annular X-ray spectra to recover the three-dimensional source properties. For typical thermal models this would include the radial temperature and density profiles. This basic method has been used extensively for X-ray cluster analysis and is the basis for the XSPEC model projct. The deproject module brings this functionality to Sherpa as a Python module that is straightforward to use and understand.

The module can also be used with the standalone Sherpa release, but as it requires support for XSPEC models - for the thermal plasma emission codes - the documentation will focus on using Sherpa with a CIAO environment.

Introduction

• Overview
  • Model creation
  • Fitting
  • Densities
• Installation
  • Requirements
  • Using pip
  • Manual installation
  • Test
  • Example data
• Changes
  • Version 0.2.0
  • Version 0.1.0
• To Do

Examples

• M87
  • Set up
  • Load the data
  • Create the model
  • Define the data to fit
  • Define the optimiser and statistic
  • Seeding the fit
  • Fitting the data
  • Inspecting the results
  • Error analysis
  • Comparing results
• Combining shells
• Multiple datasets per annulus (3C186)

Module documentation

• The deproject.deproject module
  • Deproject
  • deproject_from_xflt
  • Class Inheritance Diagram
• The deproject.specstack module
  • SpecStack