SRG/ART-XC, Swift, NICER, and NuSTAR study of different states of the transient X-ray pulsar MAXI J0903–531

The Early Data Release of eROSITA and Mikhail Pavlinsky ART-XC on the SRG mission

Free Access

Table 3

Best-fitting results of the broadband spectra approximation for MAXI J0903–531 in different states obtained with NuSTAR, Swift/XRT, and SRG/ART-XC.

Parameter	Low state	High state
N_H, 10²² cm⁻²	3.3 ± 1.1	1.3 ± 0.2
Phot. index	1.64 ± 0.05	1.14 ± 0.01
E_cut, keV		22.2 ± 0.3
E_fold, keV		7.5 ± 0.2
E_Iron, keV	6.29^(a)	6.29 ± 0.04
σ_Iron, keV	0.33^(a)	0.33 ± 0.08
Norm_Iron	(5.2 ± 3.8) × 10⁻⁶	(1.5 ± 0.2) × 10⁻⁴
C_XRT	1.6 ± 0.3	1.05 ± 0.06
C_FPMA	1	1
C_fpmb	1.03 ± 0.03	1.047 ± 0.004
C_ART–XC	0.29 ± 0.02	0.98 ± 0.05
F_x^(b), 10⁻¹⁰ erg s⁻¹ cm⁻²	0.129 ± 0.006	3.73 ± 0.02
C-stat (d.o.f.)	404.2 (409)	756.9 (703)

Notes.^(a) Iron line parameters were fixed at values derived from the spectrum obtained in the bright state.^(b) The observed fluxes are given in the 0.5–100 keV energy range.

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.