2.3.1 On-axis Effective Area

Figure 13 (which appeared as Figure 11.1 of Appendix F) is a plot of the on-axis effective area of the HRI/XRT as a function of incident energy; this function is tabulated in Table 2 (Table 11.1 of Appendix F).

  

Figure 13: The on-axis effective area of the XRT/HRI vs photon energy

LINK TO POSTSCRIPT FILE for Figure 13

  

Table 2: ROSAT XRT+HRI Effective Area

Energy	Lambda	Effective	Energy	Lambda	Effective
(keV)	(Å)	Area (cm2)	(keV)	(Å)	Area (cm2)
0.10	124.0	1.0	1.10	11.3	94.5
0.20	62.0	20.2	1.20	10.3	89.7
0.28	44.3	43.5	1.30	9.5	84.7
0.28	44.1	0.0	1.40	8.9	76.1
0.30	41.3	1.0	1.50	8.3	56.5
0.40	31.0	10.6	1.60	7.8	50.0
0.50	24.8	19.3	1.70	7.3	37.2
0.60	20.7	7.6	1.80	6.9	28.0
0.63	19.7	11.9	1.90	6.5	19.4
0.70	17.7	35.5	2.00	6.2	11.2
0.80	15.5	59.9	2.10	5.9	2.7
0.90	13.8	82.6	2.20	5.6	0.6
1.00	12.4	83.2	2.30	5.4	0.4
			3.40	5.2	0.2