2017ApJ...839...19L

Query : 2017ApJ...839...19L

2017ApJ...839...19L - Astrophys. J., 839, 19-19 (2017/April-2)

Analysis of quasi-periodic oscillations and time lag in ultraluminous X-ray sources with XMM-Newton.

LI Z.-J., XIAO G.-C., CHEN L., ZHANG S., BU Q.-C., ZHANG L., MA X., YAN L.-L. and QU J.-L.

Abstract (from CDS):

We investigated the power density spectrum (PDS) and time lag of ultraluminous X-ray sources (ULXs) observed by XMM-Newton. We determined the PDSs for each ULX and found that five of them show intrinsic variability due to obvious quasi-periodic oscillations (QPOs) of mHz-1 Hz, consistent with previous reports. We further investigated these five ULXs to determine their possible time lag. The ULX QPOs exhibit a soft time lag that is linearly related to the QPO frequency. We discuss the likelihood of the ULX QPOs being type-C QPO analogs, and the time lag models. The ULXs might harbor intermediate-mass black holes if their QPOs are type-C QPO analogs. We suggest that the soft lag and the linearity may be due to reverberation.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): accretion, accretion disks - black hole physics - X-rays: binaries - X-rays: binaries

Simbad objects: 15

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Number of rows : 15
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 2E 756 ULX 03 18 22.00 -66 36 04.3   23.5 23.6     O9.5 262 3
2 [SST2011] J034555.61+680455.3 ULX 03 45 55.612 +68 04 55.29           ~ 176 1
3 2CXO J095550.1+694046 HXB 09 55 50.12 +69 40 46.4           ~ 294 1
4 [KCF2005] M82 G ULX 09 55 51.040 +69 40 45.49           ~ 284 1
5 RX J0957.9+6903 ULX 09 57 53.290 +69 03 48.20           ~ 246 4
6 Z 212-25 Sy1 10 34 38.5982990352 +39 38 28.187042604   17.37 16.90     ~ 402 1
7 [FK2005] 25 ULX 14 03 19.63 -41 22 58.7           ~ 252 0
8 V* V381 Nor HXB 15 50 58.6637920704 -56 28 35.258385000           K3III 1254 0
9 V* QX Nor LXB 16 12 43.0 -52 25 26           ~ 946 1
10 V* V801 Ara LXB 16 40 55.5976953528 -53 45 04.948107156 17.50 18.20 17.5   17.07 ~ 921 0
11 V* V821 Ara LXB 17 02 49.3876391280 -48 47 23.087954544         15.322 ~ 2237 0
12 NAME XTE J17464-3213 LXB 17 46 15.59637 -32 14 00.8600           ~ 805 0
13 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2810 0
14 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4590 0
15 NAME NGC 6946 SNR SNR 20 35 00.74 +60 11 30.6           ~ 117 0

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