A study of the new X-ray transient RXTE J2123-058 during its post-outburst state

Roberto Soria; Kinwah Wu; Duncan K. Galloway

doi:10.1046/j.1365-8711.1999.02861.x

A study of the new X-ray transient RXTE J2123-058 during its post-outburst state

Roberto Soria^*, Kinwah Wu, Duncan K. Galloway

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We carried out I, R, V and B photometric observations of the neutron star X-ray binary RXTE J2123-058 shortly after the end of the X-ray outburst in mid-1998. We adopt the low-mass binary model to interpret our observations. After folding our data on the 0.24 821-d orbital period, and correcting for the steady brightness decline following the outburst, we observed sinusoidal oscillations with hints of ellipsoidal modulations which became progressively more evident. Our data also show that the decline in brightness was faster in the V band than in the R and I bands. This suggests both the cooling of an irradiation-heated secondary star and the fading of an accretion disc over the nights of our observations.

Original language	English
Pages (from-to)	528-532
Number of pages	5
Journal	Monthly Notices of the Royal Astronomical Society
Volume	309
Issue number	2
DOIs	https://doi.org/10.1046/j.1365-8711.1999.02861.x
Publication status	Published - 21 Oct 1999

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10.1046/j.1365-8711.1999.02861.x

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title = "A study of the new X-ray transient RXTE J2123-058 during its post-outburst state",

abstract = "We carried out I, R, V and B photometric observations of the neutron star X-ray binary RXTE J2123-058 shortly after the end of the X-ray outburst in mid-1998. We adopt the low-mass binary model to interpret our observations. After folding our data on the 0.24 821-d orbital period, and correcting for the steady brightness decline following the outburst, we observed sinusoidal oscillations with hints of ellipsoidal modulations which became progressively more evident. Our data also show that the decline in brightness was faster in the V band than in the R and I bands. This suggests both the cooling of an irradiation-heated secondary star and the fading of an accretion disc over the nights of our observations.",

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T1 - A study of the new X-ray transient RXTE J2123-058 during its post-outburst state

AU - Soria, Roberto

AU - Wu, Kinwah

AU - Galloway, Duncan K.

PY - 1999/10/21

Y1 - 1999/10/21

N2 - We carried out I, R, V and B photometric observations of the neutron star X-ray binary RXTE J2123-058 shortly after the end of the X-ray outburst in mid-1998. We adopt the low-mass binary model to interpret our observations. After folding our data on the 0.24 821-d orbital period, and correcting for the steady brightness decline following the outburst, we observed sinusoidal oscillations with hints of ellipsoidal modulations which became progressively more evident. Our data also show that the decline in brightness was faster in the V band than in the R and I bands. This suggests both the cooling of an irradiation-heated secondary star and the fading of an accretion disc over the nights of our observations.

AB - We carried out I, R, V and B photometric observations of the neutron star X-ray binary RXTE J2123-058 shortly after the end of the X-ray outburst in mid-1998. We adopt the low-mass binary model to interpret our observations. After folding our data on the 0.24 821-d orbital period, and correcting for the steady brightness decline following the outburst, we observed sinusoidal oscillations with hints of ellipsoidal modulations which became progressively more evident. Our data also show that the decline in brightness was faster in the V band than in the R and I bands. This suggests both the cooling of an irradiation-heated secondary star and the fading of an accretion disc over the nights of our observations.

KW - Accretion, accretion discs

KW - Binaries: close

KW - Stars: individual: RXTE J2123-058

KW - Stars: neutron

KW - X-rays: stars

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DO - 10.1046/j.1365-8711.1999.02861.x

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JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

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ER -

A study of the new X-ray transient RXTE J2123-058 during its post-outburst state

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