EDP Sciences logo
Subscriber Authentication Point
Search
Menu
Home All issues Volume 698 (June 2025) A&A, 698 (2025) A22 Full HTML
Open Access

Table 4.

Spectro-polarimetric parameters in different pulse-phase bins for the combined data set Obs. 1–5 in different energy ranges.

Phase q u NH Photon index PD PA χ2/d.o.f.
(%) (%) (1022 cm−2) (%) (deg)
2–8 keV
0.000–0.125 −2.7 ± 4.0 4.7 ± 4.0 1.7 ± 0.3 1.09 ± 0.07 3.1 ± 2.8 −88 ± 26 1850/1742
0.125–0.250 −2.8 ± 3.1 −3.7 ± 3.1 2.5 ± 0.2 1.43 ± 0.06 2.5 ± 2.3 −69 ± 32 2574/2381
0.250–0.375 −3.6 ± 2.6 −0.3 ± 2.6 2.1 ± 0.2 1.20 ± 0.04 2.2 ± 1.9 88 ± 30 2925/2794
0.375–0.500 9.2 ± 2.7 −8.5 ± 2.7 1.6 ± 0.2 0.94 ± 0.04 8.1 ± 1.9 −16 ± 7 2814/2868
0.500–0.625 6.0 ± 2.7 −2.7 ± 2.7 2.3 ± 0.2 1.27 ± 0.05 3.5 ± 1.9 1 ± 17 2956/2760
0.625–0.750 2.8 ± 3.8 −0.4 ± 3.8 1.8 ± 0.3 1.00 ± 0.07 4.3 ± 2.8 15 ± 20 1973/1904
0.750–0.875 −2.5 ± 3.7 0.8 ± 3.7 1.9 ± 0.3 1.00 ± 0.07 4.0 ± 2.6 86 ± 20 1999/1983
0.875–1.000 9.5 ± 3.4 1.8 ± 3.4 2.6 ± 0.3 1.04 ± 0.06 6.5 ± 2.4 7 ± 11 2192/2234
2–3 keV
0.000–0.125 1.9 ± 5.4 0.9 ± 5.4 1.7fixed 0.97 ± 0.10 2 . 3 − 2.3 + 5.5 $ 2.3_{-2.3}^{+5.5} $ 21 ± 90 726/700
0.125–0.250 −0.7 ± 4.1 −3.7 ± 4.1 2.5fixed 1.35 ± 0.08 2 . 8 − 2.8 + 4.1 $ 2.8_{-2.8}^{+4.1} $ −16 ± 90 908/878
0.250–0.375 −1.5 ± 3.6 2.3 ± 3.6 2.1fixed 1.16 ± 0.07 3 . 2 − 3.2 + 3.5 $ 3.2_{-3.2}^{+3.5} $ 51 ± 90 857/892
0.375–0.500 10.0 ± 3.7 0.7 ± 3.7 1.6fixed 0.96 ± 0.07 7.8 ± 3.7 8 ± 14 827/906
0.500–0.625 1.6 ± 3.7 1.0 ± 3.7 2.3fixed 1.24 ± 0.07 1 . 6 − 1.6 + 3.7 $ 1.6_{-1.6}^{+3.7} $ 70 ± 90 898/899
0.625–0.750 1.6 ± 5.3 9.9 ± 5.3 1.8fixed 0.92 ± 0.10 9.1 ± 5.3 26 ± 18 765/769
0.750–0.875 −8.9 ± 5.1 14.5 ± 5.1 1.9fixed 0.92 ± 0.10 17.6 ± 5.1 65 ± 9 779/776
0.875–1.000 2.3 ± 4.7 23.8 ± 4.7 2.6fixed 1.01 ± 0.09 17.6 ± 4.7 45 ± 8 774/826
4–8 keV
0.000–0.125 −4.9 ± 5.9 9.9 ± 5.9 1.7fixed 0.87 ± 0.10 5.2 ± 4.8 −88 ± 27 503/460
0.125–0.250 −3.3 ± 4.8 −2.9 ± 4.8 2.5fixed 1.19 ± 0.08 3 . 4 − 3.4 + 3.8 $ 3.4_{-3.4}^{+3.8} $ 83 ± 90 674/667
0.250–0.375 −5.4 ± 3.9 −2.6 ± 3.9 2.1fixed 1.02 ± 0.06 8.0 ± 3.0 −53 ± 11 1023/946
0.375–0.500 10.6 ± 3.9 −14.9 ± 3.9 1.6fixed 0.77 ± 0.06 11.5 ± 3.0 −29 ± 8 1031/1036
0.500–0.625 8.9 ± 4.1 −5.0 ± 4.1 2.3fixed 1.09 ± 0.07 7.0 ± 3.2 4 ± 14 1032/955
0.625–0.750 2.4 ± 5.6 −5.6 ± 5.6 1.8fixed 0.91 ± 0.10 3 . 9 − 3.9 + 4.6 $ 3.9_{-3.9}^{+4.6} $ 9 ± 90 549/514
0.750–0.875 1.3 ± 5.4 −4.8 ± 5.4 1.9fixed 0.70 ± 0.09 5.1 ± 4.3 −42 ± 29 542/541
0.875–1.000 12.1 ± 4.8 −5.2 ± 4.8 2.6fixed 1.03 ± 0.08 9.0 ± 3.8 −12 ± 13 643/667

Notes. Normalized Stokes parameters q and u are obtained using the pcube algorithm in IXPEOBSSIM. PD and PA are obtained with XSPEC. The uncertainties computed using the error command are given at the 68.3% (1σ) c.l. (Δχ2 = 1 for one parameter of interest).

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.