See also the
BEK region: ACIS, R:G:B =
0.4-0.75 : 0.75-1.1 : 1.1-3.0 keV
BEK region: ACIS, R:G:B = O:Fe:Ne
Full SNR: Radio(red) & X-ray(grn),
Coming soon: Simulated Micro-X Observation of Puppis A
What Micro-X sees...
Counts/pixel distribution over image
ACIS image with center indicated
An ARF for Micro-X and Puppis Simulation
The plot at left shows the Puppis A BEK vpshock model
(below) folded through the Micro-X effective area file:
( FYI, these files are in MKI directory: /nfs/spectra/d1/Science/Puppis/e2d_081111/ )
Comparing FPCS (Winkler 1981), ACIS, and vpshock
*) Note that since Winkler only gives the line fluxes, an ad hoc bremss component was included for the complete Winkler model (fitting kT and norm, with the NH absorption fixed at 0.16x10^22). The Winkler fluxes were also adjusted slightly by a smooth energy-varying factor of: 1.0*(0.900[keV]/E_line)^0.5 to have better agreement with the low-resolution ACIS data. This energy dependent correction-factor (only about +17% at O VIII L-alpha) may include calibration errors of the FPCS fluxes, differences of the spatial regions sampled by the ACIS and FPCS observations, and/or some evolution of the BEK-region emission over the 22 years between the FPCS (1979) and ACIS (2001) observations.
#) The vpshock model here was calculated with XSPEC using the "NEIVERS" set to 2.0 to use the APEC data files; these files were the updated ones provided by K. Borkowski.