Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://xmm.vilspa.esa.es/docs/documents/CAL-SRN-0045-1-0.ps.gz Äàòà èçìåíåíèÿ: Wed Jan 3 15:10:24 2001 Äàòà èíäåêñèðîâàíèÿ: Mon Oct 1 21:46:42 2012 Êîäèðîâêà: Ïîèñêîâûå ñëîâà: massive stars

XMM­Newton CCF Release Note
XMM­CCF­REL­45
RGS Cross­Dispersion PSF
C. Erd
December 13, 2000
1 CCF components
Name of CCF VALDATE List of Blocks
changed
CAL VERSION XSCS flag
RGS1 CROSSPSF 0002 200­01­01T00:00:00 CROSSPSF xmmsas 20001207 0215 NO
RGS2 CROSSPSF 0002 200­01­01T00:00:00 CROSSPSF xmmsas 20001207 0215 NO
2 Changes
The cross­dispersion LSF distribution as a function of dispersion angle fi was measured from data
taken with Mkn 421 (revolution 84, exposures 0099280101001 & 0099280101002).
Now there is also one distribution available per RGS.
3 Scientific Impact of this Update
The distribution is used for the selection regions in the image domain. The selection region impacts
on the effective area of RGS. These new distributions give wider selections that better suit the data.
First data were selected by the order separations filter for first order. It was verified that addition
of second order data does not imporve the statistical quality significantly. The dispersed image was
divided into 20 band in fi and the distributions in cross­dispersion were obtained per band. The
intensity of the source is so high that residual background can be neglected.
It was verified that the second order data are statistically consistent with these distributions.
1

XMM­Newton CCF Release XMM­CCF­REL­45 Page: 2
These each of these distributions in cross­dispersion was fit with two added Gaussians. The
result of these fits is plotted in the attached figures (red is the result of the fit, blue is the data).
As can be seen, the distributions can very well be parameterized with two Gaussians with common
center. Only at the very center of the largest BETA of RGS2 the two Gaussian approach fails, but
the integral error (which effects the effective area only) that is made by this is small.
4 Estimated Scientific Quality
Decrease of the uncertainty of this contribution to the the effective area for narrow selection regions
is estimated to be reduced to a few percent. For large selection regions (? 97%) the change would
be small. For large regions, however care must be taken, as more background is included in the
selected data.

XMM­Newton CCF Release XMM­CCF­REL­45 Page: 3
Beta=0.038925
RGS1
0
50
100
150
200
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
00/10/31 10.42
Beta=0.040775
0
200
400
600
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.042625
0
200
400
600
800
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.044475
0
500
1000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.046325
0
500
1000
1500
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.048175
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.050025
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.051875
0
1000
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3

XMM­Newton CCF Release XMM­CCF­REL­45 Page: 4
Beta=0.053725
RGS1
0
1000
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
00/10/31 10.43
Beta=0.055575
0
1000
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.057425
0
1000
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.059275
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.061125
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.062975
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.064825
0
500
1000
1500
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.066675
0
500
1000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3

XMM­Newton CCF Release XMM­CCF­REL­45 Page: 5
Beta=0.068525
RGS1
0
250
500
750
1000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
00/10/31 10.44
Beta=0.070375
0
250
500
750
1000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.072225
0
200
400
600
800
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.074075
0
200
400
600
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3

XMM­Newton CCF Release XMM­CCF­REL­45 Page: 6
Beta=0.038925
RGS2
0
50
100
150
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
00/10/13 14.15
Beta=0.040775
0
200
400
600
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.042625
0
250
500
750
1000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.044475
0
500
1000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.046325
0
500
1000
1500
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.048175
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.050025
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.051875
0
1000
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3

XMM­Newton CCF Release XMM­CCF­REL­45 Page: 7
Beta=0.053725
RGS2
0
1000
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
00/10/13 14.15
Beta=0.055575
0
1000
2000
3000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.057425
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.059275
­1
­0.5
0
0.5
1
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.061125
­1
­0.5
0
0.5
1
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.062975
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.064825
0
500
1000
1500
2000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.066675
0
500
1000
1500
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3

XMM­Newton CCF Release XMM­CCF­REL­45 Page: 8
Beta=0.068525
RGS2
0
500
1000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
00/10/13 14.15
Beta=0.070375
0
500
1000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.072225
0
250
500
750
1000
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3
Beta=0.074075
0
200
400
600
800
­0.2 ­0.1 0 0.1 0.2 0.3
x 10 ­3