A study of the low-mass X-ray binary dip sources XB 1916-053, XB 1323-619, X 1624-490 and 4U 1746-371 observed with INTEGRAL

Abstract

We detect dipping activity/modulations in the light curve of the four LMXBs in the 3--10 keV and 20--40 keV energy ranges. The spectral parameters derived from the fits to the INTEGRAL data are consistent with hot coronal structures in these systems where we find a range of plasma temperatures 3.0--224.9 keV. The unabsorbed X-ray to soft Gamma-ray flux between 4--200 keV are 5.9$\times 10^{-10}$ erg s${}^{-1}$ cm${}^{-2}$ for XB 1916-053, 3.3$\times 10^{-10}$ erg s${}^{-1}$ cm${}^{-2}$ for XB 1323-619, 21.6$\times 10^{-10}$ erg s${}^{-1}$ cm${}^{-2}$ for X 1624-490 and 11.0$\times 10^{-10}$ erg s${}^{-1}$ cm${}^{-2}$ for 4U 1746-371. The optical depth to Compton scattering, $\tau$, varies in a range 4.4--0.002 consistent with electron densities $n_e$ $<$ 1.4$\times 10^{15}$ cm${}^{-3}$. In general, we find no significant difference in the dip and non-dip spectra in the ISGRI energy range (above 20 keV) for all the four sources. We only detect absorption differences between dipping and non-dipping intervals for XB 1916-053 and X 1624-490 in the JEM-X energy range. Fits in the 4--200 keV range including an additional photo-ionized absorber model for the two sources show that XB 1916-053 has the highest ionized absorber amoung the two.

arXiv comment27 pages, 7 figures, 4 tables, accepted as it stands in the Astronomical Journal

References in corpus (37)

• A Unified Description of the Timing Features of Accreting X-ray Binaries
• The INTEGRAL Science Data Centre (ISDC)
• The Chandra HETGS and RXTE view of GRS 1915+105
• High resolution Chandra HETG and RXTE observations of GRS 1915+105 : A hot disk atmosphere & cold gas enriched in Iron and Silicon
• Boundary layer, accretion disk and X-ray variability in luminous LMXBs
• Simultaneous Chandra and RXTE Spectroscopy of the Microquasar H~1743-322: Clues to Disk Wind and Jet Formation from a Variable Ionized Outflow
• Chandra/HETGS Spectroscopy of the Galactic Black Hole GX 339-4: A Relativistic Iron Line and Evidence for a Seyfert-like Warm Absorber
• Spectral changes during dipping in low-mass X-ray binaries due to highly-ionized absorbers
• A highly-ionized absorber in the X-ray binary 4U 1323-62: a new explanation for the dipping phenomenon
• Measurements of accretion disc corona size in LMXB: consequences for Comptonization and LMXB models
• Suzaku discovery of iron absorption lines in outburst spectra of the X-ray transient 4U 1630-472
• A new Comptonization model for low-magnetized accreting neutron stars in low mass X-ray binaries
• The Structure and X-ray Recombination Emission of a Centrally Illuminated Accretion Disk Atmosphere and Corona
• Recombination spectra of Helium-Like Ions
• Discovery of narrow X-ray absorption features from the dipping low-mass X-ray binary X 1624-490 with XMM-Newton
• Discovery of X-ray absorption features from the dipping low-mass X-ray binary XB 1916-053 with XMM-Newton
• An XMM-Newton study of the X-ray binary MXB1659-298 and the discovery of narrow X-ray absorption lines
• Simple Photoelectric Absorption during Dipping in the ASCA Observation of XB1916-053
• Detection of negative superhumps in a LMXRB -- an end to the long debate on the nature of V1405 Aql (X1916-053)
• High-Energy sources before INTEGRAL -- INTEGRAL reference catalog --
• Discovery of a 270 Hz X-Ray Burst Oscillation in the X-Ray Dipper 4U 1916-053
• High-Resolution spectroscopy of the low-mass X-ray binary EXO 0748-67
• Timing Analysis of the Light Curve of the Dipping-Bursting X-ray Binary X1916-053
• The Ephemeris and Dipping Spectral Behavior of X1624-490
• Discovery of complex narrow X-ray absorption features from the low-mass X-ray binary GX13+1 with XMM-Newton
• A persistent ~1 Hz quasi-periodic oscillation in the dipping low-mass X-ray binary 4U 1323-62
• Variations in the dip properties of the low-mass X-ray binary XB 1254-69 observed with XMM-Newton and INTEGRAL
• Discrete X-ray Signatures of a Photoionized Plasma Above the Accretion Disk of the Neutron Star EXO 0748-676
• Using the X-ray Dust Scattering Halo of 4U 1624-490 to determine distance and dust distributions
• Discovery of absorption features of the ADC and systematic acceleration of the X-ray burst rate in XB 1323-619
• A study of the spectral evolution during dipping in XB 1323-619 with Rossi-XTE and BeppoSAX
• Chandra Observation of the Big Dipper X 1624-490
• Is the Lack of Pulsations in Low Mass X-Ray Binaries due to Comptonizing Coronae?
• The orbital period of the dipping, bursting, globular cluster X-ray source XB 1746-371 from Rossi X-ray Timing Explorer observations
• Detection of Highly Ionized Metal Absorption Lines in the Ultracompact X-ray Dipper 4U 1916-05
• Chandra Observation of the Persistent Emission from the Dipping Source XB 1916-053
• X-ray Dip Monitoring of XB 1916-053

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• X-ray Spectroscopy of the High Mass X-ray Binary Pulsar Centaurus X-3 over its Binary Orbit
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• Constraining Progenitors of Observed LMXBs Using CARB Magnetic Braking
• Frequency Resolved Spectroscopy of XB 1323-619 Using XMM-Newton data: Detection of a Reflection Region in the Disk