2002 Chandra Calibration Workshop

GRS 1915+105

This example concerns the HETGS observation (obsid_660) of GRS 1915+105 by Julia Lee from April 2000.

The first figure shows the result of flux-correcting using the standard technique. In this figure the dashed black line indicates the best guess of the correct flux based upon the use of the pileup model.

Figure showing result of standard technique

Here is the result of the pileup model:

Figure showing result of the pileup
model

Although the agreement between the various orders is better than that obtained by the standard flux-correction technique, there are still some systematic differences between the orders. In particular, the MEG+1 order is not being properly flux-corrected.

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This page was last updated Dec 16, 2002 by John E. Davis. To comment on it or the material presented here, send email to davis (at) space.mit.edu.