Chandra Observation of the Big Dipper X 1624-490

Abstract

We present the results of a 73 ks long Chandra observation of the dipping source X 1624-490. During the observation a complex dip lasting 4 hours is observed. We analyse the persistent emission detecting, for the first time in the 1st-order spectra of X 1624-490, an absorption line associated to \ion{Ca}{xx}. We confirm the presence of the \ion{Fe}{xxv} K${}_{\alpha }$ and \ion{Fe}{xxvi} K${}_{\alpha }$ absorption lines with a larger accuracy with respect to a previous XMM observation. Assuming that the line widths are due to a bulk motion or a turbulence associated to the coronal activity, we estimate that the lines have been produced in a photoionized absorber between the coronal radius and the outer edge of the accretion disk.

arXiv comment8 pages, 5 figures, accepted by A&A on 13/11/2006. Revised version with minor points corrected and reference added to the used data taken from the Chandra Public Archive (Obsid 4559)

References in corpus (15)

• Atomic Data for Permitted Resonance Lines of Atoms and Ions from H to Si, and S, Ar, Ca and Fe
• High resolution Chandra HETG and RXTE observations of GRS 1915+105 : A hot disk atmosphere & cold gas enriched in Iron and Silicon
• The Chandra HETGS and RXTE view of GRS 1915+105
• Spectral changes during dipping in low-mass X-ray binaries due to highly-ionized absorbers
• Erratum: ASCA Observations of the Absorption-Line Features from the Super-Luminal Jet Source GRS 1915+105
• 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
• 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
• 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
• Neutron star blackbody contraction during flaring in X1624-490
• 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

Cited by in corpus (17)

• Accretion disc atmospheres and winds in low-mass X-ray binaries
• X-ray follow-ups of XSSJ12270-4859: a low-mass X-ray binary with gamma ray FERMI-LAT association
• A ionized reflecting skin above the accretion disk of GX 349+2
• Chandra X-ray spectroscopy of a clear dip in GX 13+1
• Using the X-ray Dust Scattering Halo of 4U 1624-490 to determine distance and dust distributions
• The accretion disk corona and disk atmosphere of 4U 1624-490 as viewed by the Chandra-HETGS
• A test of the nature of the Fe K Line in the neutron star low-mass X-ray binary Serpens X-1
• Broadband spectral analysis of MXB 1659-298 in its soft and hard state
• The broadband spectral analysis of 4U 1702-429 using XMM-Newton and BeppoSAX data
• Evidence of a non-conservative mass transfer in the ultra-compact X-ray source XB 1916-053
• 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
• Constraining the geometry of the dipping atoll 4U 1624-49 with X-ray spectroscopy and polarimetry
• Discovery of periodic dips in the brightest hard X-ray source of M31 with EXTraS
• Fe K$\alpha$ and Fe K$\beta$ line detection in the NuSTAR spectrum of the ultra-bright Z-source Scorpius X-1
• Accretion disc winds in X-ray binaries
• Broad-band spectral analysis of LMXB 2S 0921-63 with Suzaku
• The first extragalactic ultra-compact X-ray binary : a candidate black hole-white dwarf system