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Profit: A spectral analysis GUI

Profit: A spectral analysis GUI. Randall Smith James Peachey. Spectral Analysis Needs. Users with high-resolution spectra (with ~10 4 bins) would like a new analysis tool in addition to XSPEC (or Sherpa). This tool must: Understand standard X-ray spectra data formats

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Profit: A spectral analysis GUI

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  1. Profit: A spectral analysis GUI Randall Smith James Peachey

  2. Spectral Analysis Needs • Users with high-resolution spectra (with ~104 bins) would like a new analysis tool in addition to XSPEC (or Sherpa). • This tool must: • Understand standard X-ray spectra data formats • Have easy-to-use interface • Link to existing atomic databases • Connect to existing spectral tools (XSPEC, Sherpa) • Be freely distributable Plus, of course, it must do some useful analysis tasks!

  3. Existing Similar Tools • PintOfAle: Useful tool, but requires IDL and focused on stellar coronae issues • ISIS: Requires S-lang competency to use efficiently. • vWhere: Good framework, but focused on event data, rather than spectral analysis.

  4. Genesis of Profit Randall: Visualized GUI tool that would allow easy plot selections, line identification and fitting and would link to the ATOMDB. James: Currently developing GLAST software using the (free) ROOT toolkit, a robust set of libraries used extensively by the high-energy community and extremely well-supported. Fortunately, the two met years ago and resumed having semi-regular lunches after Randall returned to Goddard...

  5. Existing Features • Displays fixed thumbnail & scrollable main plots • Modifiable plot features (linestyle, color) • Finds lines from ATOMDB that match plot • Can convert energy spectral to velocity spectra • Stores & restores subplots • Fits spectral with simple Gaussian fits (via ROOT intrinsics) • Internal ability to handle either wavelength or energy data

  6. (Some) Future Plans • Fitting • Do complex fitting through interface to XSPEC • Generate XSPEC xcm file to load observed subplot immediately • Display plot residuals • Line Identification • User filters on line id list (ie, only Fe lines, only He-like, etc) • Temperature -selected line id list, rather than peak emission • Display implied lines (ie, Fe XVII 3C line implies a 3D line) • Create latex table from line id, fluxes • Support for absorption spectroscopy (sort by oscillator strength) • Plot Display • Show/hide error bars; allow rebinning, smoothing, etc • Using input redshift, show in observed or source frame • Overlay (or co-add) individual line spectra in velocity space • Display observed line ratio and temperature/density curve

  7. And now a screenshot...

  8. A sufficiently advanced technology is indistinguishable from a rigged demo... ...paraphrasing Larry Niven

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