Sherpa

Introduction

  • Installation
  • A quick guide to modeling and fitting in Sherpa
  • Sherpa and CIAO

User Documentation

  • What data is to be fit?
  • Creating model instances
  • Evaluating a model
  • Available Models
  • What statistic is to be used?
  • Optimisers: How to improve the current parameter values
  • Fitting the data
  • Visualization
  • Markov Chain Monte Carlo and Poisson data
  • Utility routines

Worked Examples

  • Simple Interpolation
  • Comparing Gaussian, Lorentzian, and Voigt 1D models
  • Simple user model

An interactive application

  • Using Sessions to manage models and data

Notebooks

  • Sherpa Quick Start
  • Notebook support in Sherpa
  • A sample of plots
  • Axis labelling
  • Viewing PHA responses
  • Asymmetric errors

Extra Functionality

  • Optimizing functions

Getting Help

  • Bug Reports
  • Contributing to Sherpa development
  • Indices and tables
Sherpa
  • Search

© Copyright 2019–2025, Chandra X-ray Center, Smithsonian Astrophysical Observatory. Last updated on 22 Aug 2025.

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