Erratum:  Discovery of Microsecond Time Lags in Kilohertz QPOs

B. A. Vaughan; M. van der Klis; M. Méndez; J. van Paradijs; R. A. D. Wijnands; W. H. G. Lewin; F. K. Lamb; D. Psaltis; E. Kuulkers; T. Oosterbroek

doi:10.1086/311785

Erratum: Discovery of Microsecond Time Lags in Kilohertz QPOs

B. A. Vaughan, M. van der Klis, M. Méndez, J. van Paradijs, R. A. D. Wijnands, W. H. G. Lewin, F. K. Lamb, D. Psaltis, E. Kuulkers, T. Oosterbroek

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Abstract

In the Letter ``Discovery of Microsecond Time Lags in Kilohertz QPOs'' by B. A. Vaughan, M. van der Klis, M. Méndez, J. van Paradijs, R. A. D. Wijnands, W. H. G. Lewin, F. K. Lamb, D. Psaltis, E. Kuulkers, and T. Oosterbroek (ApJ, 483, L115 [1997]), the reported time lags, while correct in magnitude, have a sign that is incorrect. We reanalyzed the data and checked the sign of our results using the hard lags in Cyg X-1 and GX 339-4 and the soft lags in the accreting millisecond pulsar SAX J1808.4-3658, as well as by using test signals. The true time delays for 4U 1608-52 are in the sense of the soft photons lagging the hard ones. Any lags in the reported energy and frequency ranges for 4U 0614+091 are between -80 and +15 μs and for 4U 1636-53 are between -50 and +25 μs (95% confidence), respectively, where a positive sign indicates a hard lag. This strengthens the conclusion of the Letter that in simple scattering models any time lags due to inverse Compton scattering are small and imply very small (

Original language	English
Pages (from-to)	L145
Journal	The Astrophysical Journal
Volume	509
Issue number	2
DOIs	https://doi.org/10.1086/311785
Publication status	Published - 1-Dec-1998
Externally published	Yes

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http://adsabs.harvard.edu/abs/1998ApJ...509L.145V

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Discovery of Microsecond Time Lags in Kilohertz QPOs
Vaughan, B. A., van der Klis, M., Méndez, M., van Paradijs, J., Wijnands, R. A. D., Lewin, W. H. G., Lamb, F. K., Psaltis, D., Kuulkers, E. & Oosterbroek, T., 1-Jul-1997, In: The Astrophysical Journal. 483, 2, p. L115-L118
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@article{042eca4a526f4f47b294cbc19fcc6e9d,

title = "Erratum: Discovery of Microsecond Time Lags in Kilohertz QPOs",

abstract = "In the Letter ``Discovery of Microsecond Time Lags in Kilohertz QPOs'' by B. A. Vaughan, M. van der Klis, M. M{\'e}ndez, J. van Paradijs, R. A. D. Wijnands, W. H. G. Lewin, F. K. Lamb, D. Psaltis, E. Kuulkers, and T. Oosterbroek (ApJ, 483, L115 [1997]), the reported time lags, while correct in magnitude, have a sign that is incorrect. We reanalyzed the data and checked the sign of our results using the hard lags in Cyg X-1 and GX 339-4 and the soft lags in the accreting millisecond pulsar SAX J1808.4-3658, as well as by using test signals. The true time delays for 4U 1608-52 are in the sense of the soft photons lagging the hard ones. Any lags in the reported energy and frequency ranges for 4U 0614+091 are between -80 and +15 μs and for 4U 1636-53 are between -50 and +25 μs (95% confidence), respectively, where a positive sign indicates a hard lag. This strengthens the conclusion of the Letter that in simple scattering models any time lags due to inverse Compton scattering are small and imply very small (",

author = "Vaughan, {B. A.} and {van der Klis}, M. and M. M{\'e}ndez and {van Paradijs}, J. and Wijnands, {R. A. D.} and Lewin, {W. H. G.} and Lamb, {F. K.} and D. Psaltis and E. Kuulkers and T. Oosterbroek",

year = "1998",

month = dec,

day = "1",

doi = "10.1086/311785",

language = "English",

volume = "509",

pages = "L145",

journal = "The Astrophysical Journal",

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TY - JOUR

T1 - Erratum

T2 - Discovery of Microsecond Time Lags in Kilohertz QPOs

AU - Vaughan, B. A.

AU - van der Klis, M.

AU - Méndez, M.

AU - van Paradijs, J.

AU - Wijnands, R. A. D.

AU - Lewin, W. H. G.

AU - Lamb, F. K.

AU - Psaltis, D.

AU - Kuulkers, E.

AU - Oosterbroek, T.

PY - 1998/12/1

Y1 - 1998/12/1

N2 - In the Letter ``Discovery of Microsecond Time Lags in Kilohertz QPOs'' by B. A. Vaughan, M. van der Klis, M. Méndez, J. van Paradijs, R. A. D. Wijnands, W. H. G. Lewin, F. K. Lamb, D. Psaltis, E. Kuulkers, and T. Oosterbroek (ApJ, 483, L115 [1997]), the reported time lags, while correct in magnitude, have a sign that is incorrect. We reanalyzed the data and checked the sign of our results using the hard lags in Cyg X-1 and GX 339-4 and the soft lags in the accreting millisecond pulsar SAX J1808.4-3658, as well as by using test signals. The true time delays for 4U 1608-52 are in the sense of the soft photons lagging the hard ones. Any lags in the reported energy and frequency ranges for 4U 0614+091 are between -80 and +15 μs and for 4U 1636-53 are between -50 and +25 μs (95% confidence), respectively, where a positive sign indicates a hard lag. This strengthens the conclusion of the Letter that in simple scattering models any time lags due to inverse Compton scattering are small and imply very small (

AB - In the Letter ``Discovery of Microsecond Time Lags in Kilohertz QPOs'' by B. A. Vaughan, M. van der Klis, M. Méndez, J. van Paradijs, R. A. D. Wijnands, W. H. G. Lewin, F. K. Lamb, D. Psaltis, E. Kuulkers, and T. Oosterbroek (ApJ, 483, L115 [1997]), the reported time lags, while correct in magnitude, have a sign that is incorrect. We reanalyzed the data and checked the sign of our results using the hard lags in Cyg X-1 and GX 339-4 and the soft lags in the accreting millisecond pulsar SAX J1808.4-3658, as well as by using test signals. The true time delays for 4U 1608-52 are in the sense of the soft photons lagging the hard ones. Any lags in the reported energy and frequency ranges for 4U 0614+091 are between -80 and +15 μs and for 4U 1636-53 are between -50 and +25 μs (95% confidence), respectively, where a positive sign indicates a hard lag. This strengthens the conclusion of the Letter that in simple scattering models any time lags due to inverse Compton scattering are small and imply very small (

U2 - 10.1086/311785

DO - 10.1086/311785

M3 - Erratum

SN - 0004-637X

VL - 509

SP - L145

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 2

ER -

Erratum: Discovery of Microsecond Time Lags in Kilohertz QPOs

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Discovery of Microsecond Time Lags in Kilohertz QPOs

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