A study of the continuum and iron K line emission from low-mass X-ray binaries

White, N. E.; Peacock, A.; Hasinger, G.; Mason, K. O.; Manzo, G.; Taylor, B. G.; Branduardi‐Raymont, G.

doi:10.1093/mnras/218.1.129

Cited by 125 publications

(116 citation statements)

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“…A broad Fe line was clearly visible with Chandra (Di Salvo et al 2005), confirming previous studies performed at low-energy resolution by White et al (1986) and Barret & Olive (2002). The HETG onboard Chandra excluded that the large width of the line could be caused by the blending of lines from iron in different ionization states, although it was not possible to distinguish between the two possible origins of the line width (relativistic smearing or Compton broadening).…”

Section: Introductionsupporting

confidence: 81%

Testing reflection features in 4U 1705−44 withXMM-Newton,BeppoSAX, and RXTE in the hard and soft states

Egron

Salvo

Motta

et al. 2013

A&A

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We use data from 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 have therefore selected observations performed at similar flux levels in the hard and soft states 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 both states, providing evidence that the inner radius of the optically thick disk slightly recedes in the hard state.

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Section: Introductionsupporting

confidence: 81%

Testing reflection features in 4U 1705−44 withXMM-Newton,BeppoSAX, and RXTE in the hard and soft states

Egron

Salvo

Motta

et al. 2013

A&A

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“…Of the two, GX 354[0 is the better studied, particularly since its discovery as a burst source (Lewin 1976 ;Ho †man et al 1976). Previous observations of GX 354[0 with Einstein, EXOSAT , Ginga, and ROSAT have shown a spectrum that can be Ðt with either a thermal bremsstrahlung of kT D 13È18 keV or a power law of photon index D 1.7È2.1 (Grindlay & Hertz 1981 ;White et al 1986 ;Day & Tawara 1990 ;Foster, Ross, & Fabian 1986 ;Schulz 1999). The column density is large but uncertain, ranging from 1.5 ] 1022 to 3.5 ] 1022 cm~2 (Basinska et al 1984 ;Schulz 1999).…”

Section: Introductionmentioning

confidence: 99%

ASCAObservations of GX 354−0 and KS 1731−260

Narita

Grindlay

Barret

2001

ApJ

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We report on ASCA observations of the low-mass X-ray binaries GX 354[0 and KS 1731[260. The spectrum of GX 354[0 is best described as a power law or a Comptonized spectrum with q D 5 and kT D 8 keV and a residual at D6.5 keV. The residual may be a disk reÑection or a Compton-broadened Gaussian line from the hot inner advection-dominated accretion ÑowÈlike coronal region. The absorption column density to the source is 2.9 ] 1022 cm~2. No soft thermal component was detected. The spectrum from KS 1731[260 is softer, and it is best Ðt with a two-component model with a column density of 1.1 ] 1022 cm~2. The likely interpretation is emission from a Comptonizing cloud with an optical depth q [ 12 and either a neutron star or a disk blackbody emission. We discuss the likely location of the Comptonizing cloud for both sources within the context of several proposed emission models.

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“…White et al (1988) extensively studied various types of two component models using EXOSAT ME observations and showed that the spectra of faint burst sources can be represented by a single component while the non-bursting bright sources can be understood in terms of two components. White et al (1986) and Gottwald et al (1995) adopted a simple one component model to represent the spectra of Ser X-1 obtained from EXOSAT GSPC observations. However, as White et al (1986) pointed out, the statistics of the data are insufficient to rule out more complex models.…”

Section: Discussionmentioning

confidence: 99%

“…White et al (1986) and Gottwald et al (1995) adopted a simple one component model to represent the spectra of Ser X-1 obtained from EXOSAT GSPC observations. However, as White et al (1986) pointed out, the statistics of the data are insufficient to rule out more complex models. The present analysis yields a better fit with the two component model for the burst source Ser X-1 obtained by ME observations.…”

Section: Discussionmentioning

confidence: 99%

“…Seon, e-mail: kiseon@kao.re.kr also observed the source twice in . Schulz et al (1989 found a positive correlation in the color-color diagram using the ME data from EXOSAT observations of . White et al (1986 and Gottwald et al (1995) analysed the spectrum of the persistent emission using Gas Scintillation Proportional Counter (GSPC) data and reported that a single-component model can give an acceptable fit.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of archival EXOSAT data on the X-ray burst source Serpens X-1

Seon

Kang

2002

A&A

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Abstract. We present analysis of data obtained from the Medium Energy proportional counter array (ME) from the EXOSAT observations of the X-ray burst source Ser X-1 made in 1983 and 1985. From the combined analysis of the spectral and fast variability properties, we show that the source is an atoll source in the banana state during the observations. The persistent spectra of the 1985 data, for which reliable background data are available, are described well by the two-component model composed of a power-law with an exponential cutoff and a blackbody. The spectral study of two bursts, which were observed during the 1985 observation, shows no clear evidence for a departure from blackbody. One of the bursts shows a weak secondary maximum, which is more prominent in the low energy band than in the high energy band, and the burst shows possible evidence of an absorption line feature at about 4.1 keV.

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A study of the continuum and iron K line emission from low-mass X-ray binaries

Cited by 125 publications

References 0 publications

Testing reflection features in 4U 1705−44 withXMM-Newton,BeppoSAX, and RXTE in the hard and soft states

Testing reflection features in 4U 1705−44 withXMM-Newton,BeppoSAX, and RXTE in the hard and soft states

ASCAObservations of GX 354−0 and KS 1731−260

Analysis of archival EXOSAT data on the X-ray burst source Serpens X-1

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