CHARACTERIZING THE EVOLVING X-RAY SPECTRAL FEATURES DURING A SUPERBURST FROM 4U 1636-536
نویسندگان
چکیده
منابع مشابه
Relativistic Iron Line Emission from the Neutron Star Low-mass X-ray Binary 4u 1636-536
We present an analysis of XMM-Newton and RXTE data from three observations of the neutron star LMXB 4U 1636-536. The X-ray spectra show clear evidence of a broad, asymmetric iron emission line extending over the energy range 4–9 keV. The line profile is consistent with relativistically broadened Fe K-α emission from the inner accretion disk. The Fe K-α line in 4U 1636-536 is considerably broade...
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In this work we investigate broad band (1-79 keV) spectral nature of the atoll source 4U 1636-536 using the combined Nu-STAR and SWIFT-XRT data. The spectra are complex and have emission components from the disc, boundary-layer and corona. In addition to that a broad iron line is also observed. A relativistic line model assuming Schwarzchild metric fits this feature. The total flux varies from ...
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The discovery of nearly coherent brightness oscillations during thermonuclear X-ray bursts from six neutron star low-mass X-ray binaries has opened up a new way to study the propagation of thermonuclear burning and may ultimately lead to greater understanding of thermonuclear propagation in other astrophysical contexts, such as in Type Ia supernovae. Here, we report detailed analyses of the D58...
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We analyzed the cooling phase of an x-ray superburst of the low-mass X-ray binary 4U 1636-53 using different models in XSPEC software. Our goal was to find the behavior of certain properties of the neutron star, e.g. radius and temperature, and to find the chemical composition of the neutron star atmosphere. We tried 6 different models for the cooling phase of the superburst and found that the ...
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We analyzed 123 thermonuclear (type-I) X-ray bursts observed by the Rossi X-ray Timing Explorer from the low-mass X-ray binary 4U 1636−536. All but two of the 40 radius-exansion bursts in this sample reached peak fluxes which were normally distributed about a mean of 6.4×10 ergs cm s, with a standard deviation of 7.6%. The remaining two radius-expansion bursts reached peak fluxes a factor of 1....
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2014
ISSN: 0004-637X,1538-4357
DOI: 10.1088/0004-637x/789/2/121