2020MNRAS.497.3896A


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.15CEST08:07:12

2020MNRAS.497.3896A - Mon. Not. R. Astron. Soc., 497, 3896-3910 (2020/September-3)

X-ray spectral and timing evolution of MAXI J1727-203 with NICER.

ALABARTA K., ALTAMIRANO D., MENDEZ M., CUNEO V.A., ZHANG L., REMILLARD R., CASTRO A., LUDLAM R.M., STEINER J.F., ENOTO T., HOMAN J., ARZOUMANIAN Z., BULT P., GENDREAU K.C., MARKWARDT C., STROHMAYER T.E., UTTLEY P., TOMBESI F. and BUISSON D.J.K.

Abstract (from CDS):

We present a detailed X-ray spectral and variability study of the full 2018 outburst of MAXI J1727-203 using NICER observations. The outburst lasted approximately four months. Spectral modelling in the 0.3-10 keV band shows the presence of both a soft thermal and a hard Comptonised component. The analysis of these components shows that MAXI J1727-203 evolved through the soft, intermediate, and hard spectral states during the outburst. We find that the soft (disc) component was detected throughout almost the entire outburst, with temperatures ranging from ∼0.4 keV, at the moment of maximum luminosity, to ∼0.1 keV near the end of the outburst. The power spectrum in the hard and intermediate states shows broad-band noise up to 20 Hz, with no evidence of quasi-periodic oscillations. We also study the rms spectra of the broad-band noise at 0.3-10 keV of this source. We find that the fractional rms increases with energy in most of the outburst except during the hard state, where the fractional rms remains approximately constant with energy. We also find that, below 3 keV, the fractional rms follows the same trend generally observed at energies >3 keV, a behaviour known from previous studies of black holes and neutron stars. The spectral and timing evolution of MAXI J1727-203, as parametrised by the hardness-intensity, hardness-rms, and rms-intensity diagrams, suggest that the system hosts a black hole, although we could not rule out a neutron star.

Abstract Copyright: © 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): Accretion, accretion discs - black hole physics - X-rays: binaries - X-rays: individual: MAXI J1727-203

Simbad objects: 22

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Number of rows : 22

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* V1055 Ori LXB 06 17 07.3 +09 08 13   18.80 18.5     ~ 522 1
2 SWIFT J0911.9-6452 X 09 12 02.43 -64 52 06.4           ~ 29 0
3 MAXI J1348-630 HX? 13 48 12.7394623992 -63 16 29.707452139           ~ 25 0
4 V* BW Cir HXB 13 58 09.700 -64 44 05.80 17.90 18.00 16.9     ~ 202 1
5 V* V381 Nor HXB 15 50 58.6520652623 -56 28 35.309070422   17.95 16.6     K3III 1062 0
6 V* QX Nor LXB 16 12 43.0 -52 25 23           ~ 849 1
7 X Nor X-1 LXB 16 34 01.610 -47 23 34.80           ~ 438 0
8 V* V801 Ara LXB 16 40 55.5979962948 -53 45 04.953475039 17.50 18.20 17.5   17.07 ~ 803 1
9 [GHJ2008] 3 HXB 16 50 00.980 -49 57 43.60     11.89     K4V 358 0
10 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1751 1
11 [KRL2007b] 214 LXB 17 00 58.46 -46 11 08.6           ~ 210 0
12 MXB 1658-298 LXB 17 02 06.54 -29 56 44.1 18.35 18.75 18.3     ~ 336 0
13 V* V821 Ara HXB 17 02 49.3810714542 -48 47 23.163091737 16.20 16.30 15.5     ~ 1826 0
14 4U 1705-44 LXB 17 08 54.470 -44 06 07.35           ~ 362 0
15 MAXI J1727-203 LXB 17 27 53 -20 23.3           ~ 10 0
16 NAME Slow Burster LXB 17 31 57.73 -33 50 02.5     15.50     ~ 775 1
17 NAME XTE J17464-3213 LXB 17 46 15.59637 -32 14 00.8600           ~ 631 0
18 AX J1748.0-2829 LXB 17 48 05.060 -28 28 25.80     13.60     ~ 175 0
19 V* V4580 Sgr LXB 18 08 27.54 -36 58 44.3   16.81 16.51     ~ 895 0
20 X Aql X-1 LXB 19 11 16.0572031521 +00 35 05.876658556           ~ 1040 1
21 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2361 0
22 HD 226868 HXB 19 58 21.6758193269 +35 12 05.782512305 9.38 9.72 8.91 8.42   O9.7Iabpvar 3997 0

    Equat.    Gal    SGal    Ecl

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2021.04.15-08:07:12

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