rgsxsrc: convolve an RGS spectrum for extended emission

This model convolves the input spectrum by an angular structure function so that it can be used with the standard RGS response matrix, which assumes a point source. This will only be of value for moderately extended (one arcmin) sources.

Before invoking this model, the xset variable RGS_XSOURCE_FILE should be set to the name of the file containing the following information:

RGS_XSOURCE_IMAGE
    <filename of image of source> 
RGS_XSOURCE_BORESIGHT
    <image boresight in format> 
RGS_XSOURCE_EXTRACTION
    <size of region in arcminutes>

Note that the angle brackets are required. An example file might look like:

RGS_XSOURCE_IMAGE
    </local/data/mymachine/myusername/MOS1.FIT> 
RGS_XSOURCE_BORESIGHT
    <05:25:02.9 -69:38:30 339.760974> 
RGS_XSOURCE_EXTRACTION
    <1.8>

The RA and Dec of the source can be determined from the image or from the headers of the source spectrum. The position angle can be found in the image headers.

The model parameter is:

par1 order (must be negative)



HEASARC Home | Observatories | Archive | Calibration | Software | Tools | Students/Teachers/Public

Last modified: Friday, 23-Aug-2024 13:20:40 EDT

HEASARC Staff Scientist Position - Applications are now being accepted for a Staff Scientist with significant experience and interest in the technical aspects of astrophysics research, to work in the High Energy Astrophysics Science Archive Research Center (HEASARC) at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. Refer to the AAS Job register for full details.