Weekly Report 23Jul2010 30Jul2010

Weekly Report 23Jul2010 30Jul2010

Simulated Point Source with Albedo Imaged Using Forward Fit Techniques

An eventlist for a point source with albedo was created for an event near limb. As shown in the previous report various imaging techniques were used to reconstruct the RHESSI images. This report focuses on using Forward Fit Techniques to image the albedo and it's foreshortening near the limb.

VIS FWDFIT with two ellipses

Using the VIS FWDFIT Image reconstruction algorithm a point source and albedo near the limb were reconstructed using a fit with two ellipses. The background image is the data map that was used to construct the eventlist, the blue contours are the vis_fwdfit image.

The background map is the data used to create the evntlist. The

VIS FWDFIT with a single ellipse - Comparison of visibilities at different angles

The visibility data for the simulated point source with albedo near the limb along with the fit to the visibilities for a fit with an angle of 0 degrees

The visibility data for the simulated point source with albedo near the limb along with the fit to the visibilities for a fit with an angle of 90 degrees. Notice the phase difference between the fits.

FWDFIT showing a single compact source

The background image shows the data map of a point source with albedo near the limb. The blue contours show a reconstructed image using FWDFIT with a single elliptical source. The green contours show a reconstructed image using FWDFIT with two elliptical sources. All other parameters are the same for the two images

The individual light curves for each detector are shown along with the fit using FWDFIT with a single elliptical gaussian source. The C statistics for each detector are shown.

The individual light curves for each detector are shown along with the fit using FWDFIT with two elliptical gaussian sources. The C statistics for each detector are shown.