2007A&A...462..657D


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.15CEST07:49:27

2007A&A...462..657D - Astronomy and Astrophysics, volume 462, 657-666 (2007/2-1)

XMM-Newton and INTEGRAL spectroscopy of the microquasar GRO J1655-40 during its 2005 outburst.

DIAZ TRIGO M., PARMAR A.N., MILLER J., KUULKERS E. and CABALLERO-GARCIA M.D.

Abstract (from CDS):

We report on two simultaneous XMM-Newton and INTEGRAL observations of the microquasar GROJ1655-40 during the 2005 outburst when the source was in its high-soft state. The 0.3-200keV spectra are complex with an overall continuum which may be modeled using an absorbed blackbody together with a weak, steep, power-law component. In addition, there is evidence for the presence of both a relativistically broadened Fe K line and a highly photo-ionized absorber. The photo-ionized absorber is responsible for strong K absorption lines of FeXXV and FeXXVI in the EPIC pn spectra and blue-shifted (v=-540±120km/s) NeX and FeXXIV features in the RGS spectra. The parameters of the photo-ionized absorber were different during the two observations with the ionization parameter, log(ξ), decreasing from 3.60±0.04 to 3.30±0.04erg.cm/s and the column density decreasing from (5.2±1.0)x1022atom/cm2 to (1.5±1.0)x1022atom/cm2 during the first and second observations as the 0.5-200keV GROJ1655-40 luminosity decreased by around a half. At 90% confidence the INTEGRAL data show no evidence of a break in the power-law component up to energies of 380keV and 90keV for the first and second observations, respectively.

Abstract Copyright:

Journal keyword(s): X-rays: binaries - accretion, accretion disks - X-rays: individual: GRO J1655-40

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 - 2021
#notes
1 [GHJ2008] 3 HXB 16 50 00.980 -49 57 43.60     11.89     K4V 358 0
2 V* V1033 Sco HXB 16 54 00.137 -39 50 44.90   15.20 14.2 16.14   F5IV 1751 1
3 MXB 1658-298 LXB 17 02 06.54 -29 56 44.1 18.35 18.75 18.3     ~ 336 0
4 V* V821 Ara HXB 17 02 49.3810714542 -48 47 23.163091737 16.20 16.30 15.5     ~ 1826 0
5 NAME XTE J17464-3213 LXB 17 46 15.59637 -32 14 00.8600           ~ 631 0
6 V* V5512 Sgr LXB 18 14 31.55 -17 09 26.7     12.73     K5III 359 0
7 Granat 1915+105 HXB 19 15 11.55576 +10 56 44.9052           ~ 2361 0
8 V* V1341 Cyg LXB 21 44 41.1544523872 +38 19 17.065856122 15.00 15.13 14.68 15.00   A9III 1094 1

    Equat.    Gal    SGal    Ecl

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2021.04.15-07:49:27

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