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ASCA Guest Observer Facility

AR Lac

AR Lac Deconvolution

If you had a 3-dimensional map of the coronae, it would be simple to predict what X-ray light curve you should observe. The reverse is harder, but possible, using a technique called deconvolution. These images show the results of a deconvolution of the ASCA lightcurve taken of the 2 day RS CVn binary AR Lac and compared with a similar deconvolution of an EXOSAT lightcurve taken 9 yr earlier. The distribution of coronal material in the system can be seen. A large structure seems to join the two stars in the ASCA observation, which was less obvious 9 yr earlier.


This file was last modified on Tuesday, 29-May-2001 16:17:46 EDT
Curator: Michael Arida (SP Sys); arida@milkyway.gsfc.nasa.gov
HEASARC Guest Observer Facility


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This file was last modified on Tuesday, 29-May-2001 16:17:46 EDT

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