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  • Home / Linux / Science and Engineering / Visualization

    ISIS 1.4.9-14



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    User Rating:
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    13 user(s)
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    Last Updated:

    Category:
    John C. Houck | More programs
    GPL / FREE
    May 27th, 2008, 14:47 GMT
    ROOT / Science and Engineering / Visualization

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    ISIS description

     

    ISIS is designed to facilitate the interpretation and analysis of high resolution X-ray spectra.

    ISIS (Interactive Spectral Interpretation System) is designed to facilitate the interpretation and analysis of high resolution X-ray spectra. It is being developed as a programmable, interactive tool for studying the physics of X-ray spectrum formation, supporting measurement and identification of spectral features, and interaction with a database of atomic structure parameters and plasma emission models.

    Here are some key features of "ISIS":

    · Efficiently generate multi-component spectral models using the APEC/APED spectroscopy database for collisionally ionized plasmas, including user-defined line profiles.
    · Automatically generate custom, multi-component APEC/APED fit-functions for specialized applications.
    · Examine ionization balance tables plus data on individual emission lines and continua.
    · (optional) Use new ISIS functionality with familiar XSPEC models. All XSPEC additive, multiplicative and convolution models are available, including table models and local models.
    · Analyze data formatted as ASCII files or FITS Type I or Type II PHA files.
    · Fit scatter data.
    · Read arbitrary FITS files and columnar ASCII tables.
    · Rebin your data interactively, with direct control over how uncertainties are propagated.
    · Factor an RSP matrix into an ARF and a normalized RMF.
    · Fit spectral models to your data either directly, or by folding models through the instrument response.
    · Generate fake data for Monte-Carlo analysis of model uncertainties and for proposal planning.
    · Analyze piled-up CCD spectra using the model developed by John Davis (MIT).
    · Do multi-order spectral analysis (e.g. using the Chandra/LETGS) by assigning multiple instrument responses to a single dataset.
    · Fit multiple data sets simultaneously, including an optional instrumental background component.
    · Easily combine multiple datasets, fitting a model to the summed data.
    · Define fit-parameters as arbitrary functions of other fit-parameters (including inequality constraints).
    · Impose arbitrary fit-constraints by introducing user-defined penalty functions.
    · Compute single-parameter confidence limits
    · Generate confidence contour maps; save and re-read as FITS images; plot and overplot contours.
    · Fit user-defined models coded in S-Lang, C or Fortran
    · Apply user-defined fit-statistics coded in S-Lang, C or Fortran
    · Apply user-defined fit-methods coded in C or Fortran
    · Apply user-defined RMFs defined in software (rather than as a FITS file)
    · Dynamically load C, C , and FORTRAN code from external modules
    · With the PVM module, distribute computationally expensive tasks across a network of workstations.

    What's New in This Release:

    · Loading of xspec12 local models was enabled.
    · Support for the S-Lang debugger and profiler was added.
    · The create_aped_line_modifier now supports modifiers that take additional user-defined arguments.
    · xspec table models now load parameter defaults from the table file.
    · Support for the analysis of INTEGRAL data was added.
    · The performance of APED spectral models that use a line modifier was improved.
    · The code was cleaned up and bugs were fixed.

      


    TAGS:

    spectral interpretation | X-ray spectra | atomic structure parameter | spectral | interpretation | X-ray

    Related downloads IT News Popular downloads New additions   Latest reviews  
    ISIS 1.4.9-14
    ISIS is designed to facilitate the interpretation and analysis of high resolution X-ray spectra.


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