0.6 (Apr 28, 2017)#

Summary#

  • Released Apr 28, 2017

  • 14 contributors (5 new)

  • 5 months of work

  • 147 pull requests (not all listed below)

What’s new?#

  • Release and installation

    • Until now, we had a roughly bi-yearly release cycle for Gammapy. Starting now, we will make stable releases more often, to ship features and fixes to Gammapy users more quickly.

    • Gammapy 0.6 requires Python 2.7 or 3.4+, Numpy 1.8+, Scipy 0.15+, Astropy 1.3+, Sherpa 4.9.0+ . Most things will still work with older Astropy and Sherpa, but we dropped testing for older versions from our continuous integration.

    • Gammapy is now available via Macports, a package manager for Mac OS (port install py35-gammapy)

  • Documentation

    • Added many tutorials as Jupyter notebooks (linked to from the docs front-page)

    • Misc docs improvements and new getting started notebooks

  • For CTA

    • Better support for CTA IRFs

    • A notebook showing how to analyse some simulated CTA data (preliminary files from first data challenge)

    • Better support and documentation for CTA will be the focus of the next release (0.7).

  • For Fermi-LAT
  • gammapy.catalog

    • Add support for gamma-cat, an open data collection and source catalog for gamma-ray astronomy (https://github.com/gammapy/gamma-cat)

    • Access to more Fermi-LAT catalogs (1FHL, 2FHL, 3FHL)

  • gammapy.spectrum

    • Better flux point class

    • Add flux point SED fitter

    • EBL-absorbed spectral models

    • Improved spectrum simulation class

  • gammapy.image

    • Add image radial and box profiles

    • Add adaptive ring background estimation

    • Add adaptive image smooth algorithm

  • gammapy.cube

    • Add prototype for 3D analysis of IACT data (work in progress)

  • gammapy.time

    • Add prototype lightcurve estimator for IACT data (work in progress)

  • gammapy.irf

    • Many IRF classes now rewritten to use the generic NDDataArray and axis classes

    • Better handling of energy dispersion

  • gammapy.utils

    • Add gammapy.utils.modeling (work in progress)

    • Add gammapy.utils.sherpa (generic interface to sherpa for fitting, with models and likelihood function defined in Gammapy) (work in progress)

  • Many small bugfixes and improvements throughout the codebase and documentation

Contributors#

  • Arjun Voruganti (new)

  • Arpit Gogia (new)

  • Axel Donath

  • Brigitta Sipocz

  • Bruno Khelifi (new)

  • Christoph Deil

  • Dirk Lennarz

  • Fabio Acero (new)

  • Johannes King

  • Julien Lefaucheur

  • Lars Mohrmann (new)

  • Léa Jouvin

  • Nachiketa Chakraborty

  • Régis Terrier

  • Zé Vinícius (new)

Pull requests#

This list is incomplete. Small improvements and bug fixes are not listed here.

See the complete Gammapy 0.6 merged pull requests list on GitHub.

  • [#1006] Add possibility to skip runs based on alpha in SpectrumExtraction (Johannes King)

  • [#1002] Containment correction in SpectrumObservation via AREASCAL (Johannes King)

  • [#1001] Add SpectrumAnalysisIACT (Johannes King)

  • [#997] Add compute_chisq method to lightcurve class (Nachiketa Chakraborty)

  • [#994] Improve Gammapy installation docs (Christoph Deil)

  • [#988] Add spectral model absorbed by EBL that can be fit (Julien Lefaucheur)

  • [#985] Improve error methods on spectral models (Axel Donath)

  • [#979] Add flux point fitter class (Axel Donath)

  • [#976] Fixes to Galactic population simulation (Christoph Deil)

  • [#975] Add PLSuperExpCutoff3FGL spectral model (Axel Donath)

  • [#966] Remove SkyMask (merge with SkyImage) (Christoph Deil)

  • [#950] Add light curve computation (Julien Lefaucheur)

  • [#933] Change IRF plotting from imshow to pcolormesh (Axel Donath)

  • [#932] Change NDDataArray default_interp_kwargs to extrapolate (Johannes King)

  • [#919] Fix Double plot issue in notebooks and improve events.peek() (Fabio Acero)

  • [#911] Improve EnergyDispersion2D get_response and tests (Régis Terrier)

  • [#906] Fix catalog getitem to work with numpy int index (Zé Vinícius)

  • [#898] Add printout for 3FGL catalog objects (Arjun Voruganti)

  • [#893] Add Fermi-LAT 3FGL catalog object lightcurve property (Arpit Gogia)

  • [#888] Improve CTA IRF and simulation classes (point-like analysis) (Julien Lefaucheur)

  • [#885] Improve spectral model uncertainty handling (Axel Donath)

  • [#884] Improve BinnedDataAxis handling of lo / hi binning (Johannes King)

  • [#883] Improve spectrum docs page (Johannes King)

  • [#881] Add support for observations with different energy binning in SpectrumFit (Lars Mohrmann)

  • [#875] Add CTA spectrum simulation example (Julien Lefaucheur)

  • [#872] Add SED type e2dnde to FluxPoints (Johannes King)

  • [#871] Add Parameter class to SpectralModel (Johannes King)

  • [#870] Clean up docstrings in background sub-package (Arpit Gogia)

  • [#868] Add Fermi-LAT 3FHL catalogue (Julien Lefaucheur)

  • [#865] Add Fermi basic image estimator (Axel Donath)

  • [#864] Improve edisp.apply to support different true energy axes (Johannes King)

  • [#859] Remove old image_profile function (Axel Donath)

  • [#858] Fix Fermi catalog flux point upper limits (Axel Donath)

  • [#855] Add Fermi-LAT 1FHL catalogue (Julien Lefaucheur)

  • [#854] Add Fermi-LAT dataset class (Axel Donath)

  • [#851] Write Macports install docs (Christoph Deil)

  • [#847] Fix Sherpa spectrum OGIP file issue (Régis Terrier and Johannes King)

  • [#842] Add AbsorbedSpectralModel and improve CTA IRF class (Julien Lefaucheur)

  • [#840] Fix energy binning issue in cube pipe (Léa Jouvin)

  • [#837] Fix containment fraction issue for table PSF (Léa Jouvin)

  • [#836] Fix spectrum observation write issue (Léa Jouvin)

  • [#835] Add image profile estimator class (Axel Donath)

  • [#834] Bump to require Astropy v1.3 (Christoph Deil)

  • [#833] Add image profile class (Axel Donath)

  • [#832] Improve NDDataArray (use composition, not inheritance) (Johannes King)

  • [#831] Add CTA Sensitivity class and plot improvements (Julien Lefaucheur)

  • [#830] Add gammapy.utils.modeling and GammaCat to XML (Christoph Deil)

  • [#827] Add energy dispersion for 3D spectral analysis (Léa Jouvin)

  • [#826] Add sky cube computation for IACT data (Léa Jouvin)

  • [#825] Update astropy-helpers to v1.3 (Brigitta Sipocz)

  • [#824] Add XSPEC table absorption model to spectral table model (Julien Lefaucheur)

  • [#820] Add morphology models for gamma-cat sources (Axel Donath)

  • [#816] Add class to access CTA point-like responses (Julien Lefaucheur)

  • [#814] Remove old flux point classes (Axel Donath)

  • [#813] Improve Feldman Cousins code (Dirk Lennarz)

  • [#812] Improve differential flux point computation code (Axel Donath)

  • [#811] Adapt catalogs to new flux point class (Axel Donath)

  • [#810] Add new flux point class (Axel Donath)

  • [#798] Add Fvar variability measure for light curves (Nachiketa Chakraborty)

  • [#796] Improve LogEnergyAxis object (Axel Donath)

  • [#797] Improve WStat implementation (Johannes King)

  • [#793] Add GammaCat source catalog (Axel Donath)

  • [#791] Misc fixes to spectrum fitting code (Johannes King)

  • [#784] Improve SkyCube exposure computation (Léa Jouvin)