2014MNRAS.445.4259A


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST07:53:15

2014MNRAS.445.4259A - Mon. Not. R. Astron. Soc., 445, 4259-4266 (2014/December-3)

Millihertz quasi-periodic oscillations and broad iron line from LMC X-1.

ALAM M.S., DEWANGAN G.C., BELLONI T., MUKHERJEE D. and JHINGAN S.

Abstract (from CDS):

We study the temporal and energy spectral characteristics of the persistent black hole X-ray binary LMC X-1 using two XMM-Newton and a Suzaku observation. We report the discovery of low-frequency ( ∼ 26-29mHz) quasi-periodic oscillations (QPOs). We also report the variability of the broad iron Kα line studied earlier with Suzaku. The QPOs are found to be weak with fractional rms amplitude in the ∼ 1-2 percent range and quality factor Q ∼ 2-10. They are accompanied by weak red noise or zero-centred Lorentzian components with rms variability at the ∼ 1-3 percent level. The energy spectra consist of three varying components - multicolour disc blackbody (kTin ∼ 0.7-0.9keV), high-energy power-law tail (Γ ∼ 2.4-3.3) and a broad iron line at 6.4-6.9keV. The broad iron line, the QPO and the strong power-law component are not always present. The QPOs and the broad iron line appear to be clearly detected in the presence of a strong power-law component. The broad iron line is found to be weaker when the disc is likely truncated and absent when the power-law component almost vanished. These results suggest that the QPO and the broad iron line together can be used to probe the dynamics of the accretion disc and the corona.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): accretion, accretion discs - black hole physics - binaries: spectroscopic - stars: individual: LMC X-1 - X-rays: stars

Simbad objects: 8

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Number of rows : 8

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME IC 10 X-1 HXB 00 20 29.09 +59 16 51.9           ~ 148 0
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14826 1
3 X LMC X-1 HXB 05 39 38.8285930597 -69 44 35.533031148   14.8 14.5     O8(f)p 560 2
4 NAME M82 ULX-1 UX? 09 55 50.01 +69 40 46.0           ~ 241 1
5 [FK2005] 25 ULX 14 03 19.63 -41 22 58.7           ~ 196 0
6 [KRL2007b] 222 LXB 17 09 07.61 -36 24 25.7           ~ 209 1
7 NAME XTE J17464-3213 LXB 17 46 15.59637 -32 14 00.8600           ~ 597 0
8 Granat 1915+105 LXB 19 15 11.54938 +10 56 44.7585           ~ 2282 0

    Equat.    Gal    SGal    Ecl

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2020.07.08-07:53:15

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