Testing reflection features in 4U 1705-44 with XMM-Newton, BeppoSAX and RXTE in the hard and soft state

Abstract

We use data of the bright atoll source 4U 1705-44 taken with XMM-Newton, BeppoSAX and RXTE both in the hard and in the soft state to perform a self-consistent study of the reflection component in this source. Although the data from these X-ray observatories are not simultaneous, the spectral decomposition is shown to be consistent among the different observations, when the source flux is similar. We therefore select observations performed at similar flux levels in the hard and soft state in order to study the spectral shape in these two states in a broad band (0.1-200 keV) energy range, with good energy resolution, and using self-consistent reflection models. These reflection models provide a good fit for the X-ray spectrum both in the hard and in the soft state in the whole spectral range. We discuss the differences in the main spectral parameters we find in the hard and the soft state, respectively, providing evidence that the inner radius of the optically thick disk slightly recedes in the hard state.

Accepted for publication in A&A, 20 pages, 12 figures

References in corpus (12)

• Modelling the behaviour of accretion flows in X-ray binaries
• Thermonuclear (type-I) X-ray bursts observed by the Rossi X-ray Timing Explorer
• X-ray reflection in accreting stellar-mass black hole systems
• A relativistically smeared spectrum in the neutron star X-ray Binary 4U 1705-44: Looking at the inner accretion disc with X-ray spectroscopy
• Effects of Downscattering on the Continuum and Line Spectra in Powerful Wind Environment. Monte Carlo Simulations, Analytical Results and Data Analysis
• Disk reflection signatures in the spectrum of the bright Z-source GX 340+0
• BeppoSAX observation of 4U 1705-44: detection of hard X-ray emission in the soft state
• Heating in an Extended Accretion Disk Corona along the Z-Pattern in Cyg X-2
• On the Non-relativistic Origin of Red-skewed Iron Lines in CV, Neutron Star and Black Hole Sources
• The first detection of Compton Reflection in the Low-Mass X-ray Binary 4U1705-44 with INTEGRAL and BeppoSAX
• Discovery of Red-Skewed K_alpha iron line in Cyg X-2 with Suzaku
• Jets from Galactic binaries

Cited by in corpus (41)

• X-ray reflected spectra from accretion disk models. III. A complete grid of ionized reflection calculations
• Constraints on the Neutron Star and Inner Accretion Flow in Serpens X-1 Using NuSTAR
• A Hard Look at the Neutron Stars and Accretion Disks in 4U 1636-53, GX 17+2, and 4U 1705-44 with $\text{NuSTAR}$
• Relativistic X-ray Reflection Models for Accreting Neutron Stars
• An in-depth study of a neutron star accreting at low Eddington rate: On the possibility of a truncated disk and an outflow
• Suzaku broad-band spectrum of 4U 1705-44: Probing the Reflection component in the hard state
• NuSTAR and XMM-Newton broad-band spectrum of SAX J1808.4-3658 during its latest outburst in 2015
• NuSTAR and XMM-Newton Observations of the Neutron Star X-ray Binary 1RXS J180408.9-34205
• Measuring A Truncated Disk in Aquila X-1
• Broad iron line in the fast spinning neutron-star system 4U 1636-53
• Study of the reflection spectrum of the accreting neutron star GX 3+1 using XMM-Newton and INTEGRAL
• First detection of X-ray polarization from the accreting neutron star 4U 1820-303
• Truncation of the Accretion Disk at One Third of the Eddington Limit in the Neutron Star Low-Mass X-ray Binary Aquila X-1
• Study of the reflection spectrum of the LMXB 4U 1702-429
• A test of the nature of the Fe K Line in the neutron star low-mass X-ray binary Serpens X-1
• A re-analysis of the NuSTAR and XMM-Newton broad-band spectrum of Ser~X-1
• On the illumination of neutron star accretion discs
• Outflows and spectral evolution in the eclipsing AMXP SWIFT J1749.4-2807 with NICER, XMM-Newton and NuSTAR
• Simultaneous NICER and NuSTAR Observations of the Ultra-compact X-ray Binary 4U 1543-624
• On the disc reflection spectroscopy of NS LMXB Serpens~X-1: analysis of a recent NuSTAR observation
• Relativistic Disk Reflection in the Neutron Star X-ray Binary XTE J1709-267 with NuSTAR
• Reflection component in the Bright Atoll Source GX 9+9
• High-frequency variability in neutron-star low-mass X-ray binaries
• The accretion/ejection link in the neutron star X-ray binary 4U 1820-30 I: A boundary layer-jet coupling?
• BEPPOSAX and RXTE spectral study of the low-mass X-ray binary 4u~1705-44. Spectral hardening during the banana branch
• Spectral analysis of the low-mass X-ray pulsar 4U 1822-371: Reflection component in a high-inclination system
• Broadband spectral analysis of MXB 1659-298 in its soft and hard state
• An XMM-Newton and INTEGRAL view on the hard state of EXO 1745-248 during its 2015 outburst
• Are the kHz QPO lags in neutron star 4U 1608-52 due to reverberation?
• The broadband spectral analysis of 4U 1702-429 using XMM-Newton and BeppoSAX data
• A Hard-to-Soft State Transition of Aquila X-1 Observed with Suzaku
• Quasi-simultaneous Integral, Swift, And Nustar Observations Of The New X-ray Clocked Burster 1rxsj180408.9-342058
• A Suzaku Observation of the Low-Mass X-Ray Binary GS 1826-238 in the Hard State
• Fe K$\alpha$ and Fe K$\beta$ line detection in the NuSTAR spectrum of the ultra-bright Z-source Scorpius X-1
• X-ray diagnostics of chemical composition of the accretion disk and donor star in ultra-compact X-ray binaries
• Probing the accretion geometry of the atoll source 4U 1702-429 in different spectral states with NICER, NuSTAR, and AstroSat
• Broadband observations of the X-ray burster 4U 1705-44 with BeppoSAX
• Investigating the coronal structure by studying time lags in the Atoll source 4U 1705-44 using AstroSat
• BeppoSAX and XMM-Newton spectral study of 4U 1735-44
• Modeling the upper kHz QPOs of 4U 1728-34 with X-ray reverberation
• The complex spectral behavior of the newly discovered neutron star X-ray binary Swift J1858.6-0814