2009A&A...508.1275B


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.21CEST07:18:45

2009A&A...508.1275B - Astronomy and Astrophysics, volume 508, 1275-1278 (2009/12-4)

Suzaku observation of IGR J16318-4848.

BARRAGAN L., WILMS J., POTTSCHMIDT K., NOWAK M.A., KREYKENBOHM I., WALTER R. and TOMSICK J.A.

Abstract (from CDS):

We report on the first Suzaku observation of IGR J16318-4848, the most extreme example of a new group of highly absorbed X-ray binaries that have recently been discovered by the International Gamma-Ray Astrophysics Laboratory (INTEGRAL). The Suzaku observation was carried out between 2006 August 14 and 17, with a net exposure time of 97ks. The average X-ray spectrum of the source can be well described (χred2=0.99) with a continuum model typical for neutron stars i.e., a strongly absorbed power law continuum with a photon index of 0.676(42) and an exponential cutoff at 20.5(6)keV. The absorbing column is NH=1.95(3)x1024cm–2. Consistent with earlier work, strong fluorescent emission lines of Fe Kα, Fe Kβ, and Ni Kα are observed. Despite the large NH, no Compton shoulder is seen in the lines, arguing for a non-spherical and inhomogeneous absorber. Seen at an average 5-60keV absorbed flux of 3.4x10–10erg/cm2/s, the source exhibits significant variability on timescales of hours.

Abstract Copyright:

Journal keyword(s): stars: individual: IGR J16318-4848 - binaries: general - X-rays: binaries

Simbad objects: 3

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Number of rows : 3

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* BP Cru HXB 12 26 37.5607088371 -62 46 13.259605389   12.70 10.66     B1.5Iaeq 617 0
2 IGR J16318-4848 HXB 16 31 48.3102815892 -48 49 00.664215918           ~ 159 0
3 NAME Norma-Cygnus Arm reg ~ ~           ~ 76 0

    Equat.    Gal    SGal    Ecl

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2021.04.21-07:18:45

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