2010A&A...522A..96N


C.D.S. - SIMBAD4 rel 1.7 - 2021.06.20CEST05:31:56

2010A&A...522A..96N - Astronomy and Astrophysics, volume 522, A96-96 (2010/11-1)

A systematic analysis of the broad iron Kα line in neutron-star LMXBs with XMM-Newton.

NG C., DIAZ TRIGO M., CADOLLE BEL M. and MIGLIARI S.

Abstract (from CDS):

We analysed the XMM-Newton archival observations of 16 neutron star (NS), low-mass X-ray binaries (LMXBs) to study the Fe K emission in these objects. The sample includes all the observations of NS LMXBs performed in EPIC pn timing mode with XMM-Newton publicly available until September 30, 2009. We performed a detailed data analysis considering pile-up and background effects. The properties of the Fe lines differed from previous published analyses because of either incorrect pile-up corrections or different continuum parameterisation. Eighty percent of the observations for which a spectrum can be extracted showed significant Fe line emission. We found an average line centroid of 6.67±0.02keV and a finite width, σ, of 0.33±0.02keV. The equivalent width of the lines varied between 17 and 189eV, with an average weighted value of 42±3eV. For sources where several observations were available, the Fe line parameters changed between observations whenever the continuum changed significantly. The line parameters did not show any correlation with luminosity. Most important, we could fit the Fe line with a simple Gaussian component for all the sources. The lines did not show the asymmetric profiles that were interpreted as indicating relativistic effects in previous analyses of these LMXBs.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - X-rays: binaries - X-rays: general - quasars: general - radiation mechanisms: non-thermal - gamma rays: general

Simbad objects: 17

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Number of rows : 17

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 V* V1055 Ori LXB 06 17 07.3 +09 08 13   18.80 18.5     ~ 525 1
3 V* V822 Cen LXB 14 58 21.9350279092 -31 40 07.515505032 11.95 12.85 12.8     K3-K7V 518 0
4 V* QU TrA LXB 15 47 54.6 -62 34 06           ~ 137 0
5 V* QX Nor LXB 16 12 43.0 -52 25 23           ~ 852 1
6 V* V801 Ara LXB 16 40 55.5979962948 -53 45 04.953475039 17.50 18.20 17.5   17.07 ~ 808 1
7 4U 1642-45 LXB 16 45 47.7 -45 36 40     14.30     ~ 389 1
8 V* V821 Ara HXB 17 02 49.3810714542 -48 47 23.163091737 16.20 16.30 15.5     ~ 1839 0
9 V* V1101 Sco LXB 17 05 44.4915929414 -36 25 23.049863107   20.10 18.6     ~ 415 0
10 4U 1705-44 LXB 17 08 54.470 -44 06 07.35           ~ 364 0
11 V* V2216 Oph LXB 17 31 44.17 -16 57 40.9 16.40 17.10 16.8     ~ 266 1
12 NAME Slow Burster LXB 17 31 57.73 -33 50 02.5     15.50     ~ 777 1
13 V* V926 Sco LXB 17 38 58.3 -44 27 00 16.90 17.70 17.5     ~ 435 0
14 [KRL2007b] 304 LXB 18 06 59.8 -29 24 30           ~ 204 0
15 V* V4580 Sgr LXB 18 08 27.54 -36 58 44.3   16.81 16.51     ~ 898 0
16 V* MM Ser LXB 18 39 57.56 +05 02 09.6   19.2 19.2     ~ 329 0
17 X Aql X-1 LXB 19 11 16.0572031521 +00 35 05.876658556           ~ 1045 1

    Equat.    Gal    SGal    Ecl

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2021.06.20-05:31:56

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