2020MNRAS.492.1091G


Query : 2020MNRAS.492.1091G

2020MNRAS.492.1091G - Mon. Not. R. Astron. Soc., 492, 1091-1101 (2020/February-2)

Radio and X-ray monitoring of the accreting millisecond X-ray pulsar IGR J17591-2342 in outburst.

GUSINSKAIA N.V., RUSSELL T.D., HESSELS J.W.T., BOGDANOV S., DEGENAAR N., DELLER A.T., VAN DEN EIJNDEN J., JAODAND A.D., MILLER-JONES J.C.A. and WIJNANDS R.

Abstract (from CDS):

IGR J17591-2342 is a new accreting millisecond X-ray pulsar that was recently discovered in outburst in 2018. Early observations revealed that the source's radio emission is brighter than that of any other known neutron star low-mass X-ray binary (NS-LMXB) at comparable X-ray luminosity, and assuming its likely >=6 kpc distance. It is comparably radio bright to black hole LMXBs at similar X-ray luminosities. In this work, we present the results of our extensive radio and X-ray monitoring campaign of the 2018 outburst of IGR J17591-2342. In total, we collected 10 quasi-simultaneous radio (VLA, ATCA) and X-ray (Swift-XRT) observations, which make IGR J17591-2342 one of the best-sampled NS-LMXBs. We use these to fit a power-law correlation index β = 0.37^{+0.42}_{-0.40} between observed radio and X-ray luminosities (LR ∝ LXβ). However, our monitoring revealed a large scatter in IGR J17591-2342's radio luminosity (at a similar X-ray luminosity, LX ∼1036 erg s-1, and spectral state), with LR ∼ 4 x 1029 erg s-1 during the first three reported observations, and up to a factor of 4 lower LR during later radio observations. None the less, the average radio luminosity of IGR J17591-2342 is still one of the highest among NS-LMXBs, and we discuss possible reasons for the wide range of radio luminosities observed in such systems during outburst. We found no evidence for radio pulsations from IGR J17591-2342 in our Green Bank Telescope observations performed shortly after the source returned to quiescence. None the less, we cannot rule out that IGR J17591-2342 becomes a radio millisecond pulsar during quiescence.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: neutron - X-rays: binaries

Simbad objects: 19

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Number of rows : 19
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* V1037 Cas LXB 00 29 03.06 +59 34 19.0           ~ 242 1
2 SWIFT J0911.9-6452 X 09 12 02.43 -64 52 06.4           ~ 31 0
3 V* BW Ant LXB 09 29 20.19 -31 23 03.2   18.50 18.63     ~ 178 0
4 PSR J1023+0038 LXB 10 23 47.6840307966 +00 38 41.006983532     17.31     GV 332 0
5 XSS J12270-4859 LXB 12 27 58.7475950389 -48 53 42.826034125           ~ 218 0
6 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825107   17.51 17.25     ~ 3889 2
7 IGR J16597-3704 gam 16 59 32.90230 -37 07 14.2780           ~ 16 0
8 XTE J1737-376 HX? 17 37 59 -37 46.3           ~ 42 1
9 QSO J1744-3116 Bla 17 44 23.57824 -31 16 36.2943           ~ 129 1
10 [PLV2002] CX1 LXB 17 48 52.163 -20 21 32.40           ~ 171 1
11 2XMM J174931.6-280805 LXB 17 49 31.940 -28 08 05.80           ~ 88 0
12 IGR J17511-3057 LXB 17 51 08.55 -30 57 41.7           ~ 91 1
13 IGR J17591-2342 gam 17 59 08.789 -23 42 46.70           ~ 22 0
14 PSR J1802-2124 Psr 18 02 05.44 -21 24 02.9           ~ 62 1
15 V* V4580 Sgr LXB 18 08 27.54 -36 58 44.3   16.81 16.51     ~ 898 0
16 QSO J1820-2528 QSO 18 20 57.84869182 -25 28 12.5836842   18.56       ~ 84 0
17 IGR J18245-2452 LXB 18 24 32.50 -24 52 07.8           ~ 190 0
18 X Aql X-1 LXB 19 11 16.0572031521 +00 35 05.876658556           ~ 1047 1
19 ICRF J193925.0-634245 Sy2 19 39 25.02671 -63 42 45.6255   18.87 18.37 17.64   ~ 1028 1

    Equat.    Gal    SGal    Ecl

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2021.07.26-07:10:52

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