Re: Aped Modelling Question

    Nat> Is there some way to ensure that the calculation,
    Nat> particularly of the continuum, goes to higher energies?  It
    Nat> appears that the atom database contains lines only down to
    Nat> 1.198 A.  Can this be extended?

Hi - 

I saw John Houck's reply, which dealt with your direct question about
APED.  It is possible to get continuum at higher energies (but not
from APED, as John explained).  There are xspec models w/ hard
continuum (as for XTE), and you could import those (if you built the
module).

It would probably take a user model to join with the aped model at
1.2A, though, so that it wasn't just  "zbrems(1) + zaped(1)", for
example, which would double-count the continuum where the models
overlap. 

In the slang user model, you would branch on the wavelength range.

Hope this helps.  If you need examples of user models, we can get more
specific. 


-- Dave

David Huenemoerder (617-253-4283; fax: 253-8084)
MIT Center for Space Research/Chandra X-ray Center
70 Vassar St., NE80-6023,
Cambridge, MA  02139
[Admin. Asst.: Deborah Gage 617-253-0228, dgage_at_email.domain.hidden----
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