6 High-Frequency Variability in Neutron-Star Low-Mass X-ray Binaries
325
69. P.G. Jonker, M. van der Klis, J. Homan, M. Méndez, W.H.G. Lewin, R. Wijnands, W. Zhang,
Low- and high-frequency variability as a function of spectral properties in the bright X-ray
binary GX 5-1. Mon. Not. R. Astron. Soc. 333(3), 665–678 (2002)
70. P.G. Jonker, M. Méndez, M. van der Klis, Kilohertz quasi-periodic oscillations difference
frequency exceeds inferred spin frequency in 4U 1636-53. Mon. Not. R. Astron. Soc. 336(1),
L1–L5 (2002)
71. P.G. Jonker, M. Méndez, M. van der Klis, Sidebands to the lower kilohertz quasi-periodic
oscillation in 4U 1636-53. Mon. Not. R. Astron. Soc. 360(3), 921–925 (2005)
72. P. Kaaret, W. Yu, E.C. Ford, S.N. Zhang, Correlation between fast quasi-periodic oscillations
and X-ray spectral shape in Atoll sources. Astrophys. J. Lett. 497(2), L93–L96 (1998)
73. P. Kaaret, S. Piraino, E.C. Ford, A. Santangelo, Discovery of microsecond soft lags in the
X-ray emission of the Atoll source 4U 1636-536. Astrophys. J. Lett. 514(1), L31–L33 (1999)
74. E. Kara, J.F. Steiner, A.C. Fabian, E.M. Cackett, P. Uttley, R.A. Remillard, K.C. Gendreau,
Z. Arzoumanian, D. Altamirano, S. Eikenberry, T. Enoto, J. Homan, J. Neilsen, A.L. Stevens,
The corona contracts in a black-hole transient. Nature 565(7738), 198–201 (2019)
75. K. Karpouzas, M. Méndez, E. ro M. Ribeiro, D. Altamirano, O. Blaes, F. García, The
comptonizing medium of the neutron star in 4U 1636 - 53 through its lower kilohertz quasiperiodic oscillations. Mon. Not. R. Astron. Soc. 492(1), 1399–1415 (2020)
76. S. Kato, Trapped one-armed corrugation waves and QPO’s. Publ. Astron. Soc. Jpn. 42,
99–113 (1990)
77. S. Kato, J. Fukue, Trapped radial oscillations of gaseous disks around a black hole. Publ.
Astron. Soc. Jpn. 32, 377 (1980)
78. W. Klu´ zniak, M.A. Abramowicz, Resonant oscillations of accretion flow and Khz QPOS.
Astrophys. Space Sci. 300(1–3), 143–148 (2005)
79. W. Kluzniak, P. Michelson, R.V. Wagoner, Determining the properties of accretion-gap
neutron stars. Astrophys. J. 358, 538 (1990)
80. W. Klu´ zniak, M.A. Abramowicz, S. Kato, W.H. Lee, N. Stergioulas, Nonlinear resonance in
the accretion disk of a millisecond pulsar. Astrophys. J. Lett. 603(2), L89–L92 (2004)
81. A.S. Kompaneets, The establishment of thermal equilibrium between quanta and electrons.
Sov. J. Exp. Theor. Phys. 4(5), 730–737 (1957)
82. N. Kumar, R. Misra, Energy dependent time delays of kHz oscillations due to thermal
Comptonization. Mon. Not. R. Astron. Soc. 445(3), 2818–2824 (2014)
83. N. Kumar, R. Misra, Constraining the size of the Comptonizing medium by modelling the
energy-dependent time lags of kHz QPOs of neutron star system. Mon. Not. R. Astron. Soc.
461(3), 2580–2588 (2016)
84. N.D. Kylafis, G.S. Klimis, Effects of electron scattering on the oscillations of an X-ray source.
Astrophys. J. 323, 678 (1987)
85. D. Lai, D. Tsang, Corotational instability of inertial-acoustic modes in black hole accretion
discs and quasi-periodic oscillations. Mon. Not. R. Astron. Soc. 393(3), 979–991 (2009)
86. F.K. Lamb, M.C. Miller, Changing frequency separation of kilohertz quasi-periodic
oscillations in the sonic-point beat-frequency model. Astrophys. J. 554(2), 1210–1215 (2001)
87. F.K. Lamb, M.C. Miller, Sonic-point and spin-resonance model of the kilohertz QPO pairs.
arXiv e-prints, astro-ph/0308179, August 2003
88. F.K. Lamb, N. Shibazaki, M.A. Alpar, J. Shaham, Quasi-periodic oscillations in bright
galactic-bulge X-ray sources. Nature 317(6039), 681–687 (1985)
89. L.D. Landau, E.M. Lifshitz, Mechanics, Volume 1, 3rd edn. Course of Theoretical Physics
(Butterworth-Heinemann, Oxford, 1976)
90. D.A. Leahy, W. Darbro, R.F. Elsner, M.C. Weisskopf, P.G. Sutherland, S. Kahn, J.E. Grindlay,
On searches for pulsed emission with application to four globular cluster X-ray sources : NGC
1851, 6441, 6624 and 6712. Astrophys. J. 266, 160–170 (1983)
91. H.C. Lee, G.S. Miller, Comptonization and QPO origins in accreting neutron star systems.
Mon. Not. R. Astron. Soc. 299(2), 479–487 (1998)
325
69. P.G. Jonker, M. van der Klis, J. Homan, M. Méndez, W.H.G. Lewin, R. Wijnands, W. Zhang,
Low- and high-frequency variability as a function of spectral properties in the bright X-ray
binary GX 5-1. Mon. Not. R. Astron. Soc. 333(3), 665–678 (2002)
70. P.G. Jonker, M. Méndez, M. van der Klis, Kilohertz quasi-periodic oscillations difference
frequency exceeds inferred spin frequency in 4U 1636-53. Mon. Not. R. Astron. Soc. 336(1),
L1–L5 (2002)
71. P.G. Jonker, M. Méndez, M. van der Klis, Sidebands to the lower kilohertz quasi-periodic
oscillation in 4U 1636-53. Mon. Not. R. Astron. Soc. 360(3), 921–925 (2005)
72. P. Kaaret, W. Yu, E.C. Ford, S.N. Zhang, Correlation between fast quasi-periodic oscillations
and X-ray spectral shape in Atoll sources. Astrophys. J. Lett. 497(2), L93–L96 (1998)
73. P. Kaaret, S. Piraino, E.C. Ford, A. Santangelo, Discovery of microsecond soft lags in the
X-ray emission of the Atoll source 4U 1636-536. Astrophys. J. Lett. 514(1), L31–L33 (1999)
74. E. Kara, J.F. Steiner, A.C. Fabian, E.M. Cackett, P. Uttley, R.A. Remillard, K.C. Gendreau,
Z. Arzoumanian, D. Altamirano, S. Eikenberry, T. Enoto, J. Homan, J. Neilsen, A.L. Stevens,
The corona contracts in a black-hole transient. Nature 565(7738), 198–201 (2019)
75. K. Karpouzas, M. Méndez, E. ro M. Ribeiro, D. Altamirano, O. Blaes, F. García, The
comptonizing medium of the neutron star in 4U 1636 - 53 through its lower kilohertz quasiperiodic oscillations. Mon. Not. R. Astron. Soc. 492(1), 1399–1415 (2020)
76. S. Kato, Trapped one-armed corrugation waves and QPO’s. Publ. Astron. Soc. Jpn. 42,
99–113 (1990)
77. S. Kato, J. Fukue, Trapped radial oscillations of gaseous disks around a black hole. Publ.
Astron. Soc. Jpn. 32, 377 (1980)
78. W. Klu´ zniak, M.A. Abramowicz, Resonant oscillations of accretion flow and Khz QPOS.
Astrophys. Space Sci. 300(1–3), 143–148 (2005)
79. W. Kluzniak, P. Michelson, R.V. Wagoner, Determining the properties of accretion-gap
neutron stars. Astrophys. J. 358, 538 (1990)
80. W. Klu´ zniak, M.A. Abramowicz, S. Kato, W.H. Lee, N. Stergioulas, Nonlinear resonance in
the accretion disk of a millisecond pulsar. Astrophys. J. Lett. 603(2), L89–L92 (2004)
81. A.S. Kompaneets, The establishment of thermal equilibrium between quanta and electrons.
Sov. J. Exp. Theor. Phys. 4(5), 730–737 (1957)
82. N. Kumar, R. Misra, Energy dependent time delays of kHz oscillations due to thermal
Comptonization. Mon. Not. R. Astron. Soc. 445(3), 2818–2824 (2014)
83. N. Kumar, R. Misra, Constraining the size of the Comptonizing medium by modelling the
energy-dependent time lags of kHz QPOs of neutron star system. Mon. Not. R. Astron. Soc.
461(3), 2580–2588 (2016)
84. N.D. Kylafis, G.S. Klimis, Effects of electron scattering on the oscillations of an X-ray source.
Astrophys. J. 323, 678 (1987)
85. D. Lai, D. Tsang, Corotational instability of inertial-acoustic modes in black hole accretion
discs and quasi-periodic oscillations. Mon. Not. R. Astron. Soc. 393(3), 979–991 (2009)
86. F.K. Lamb, M.C. Miller, Changing frequency separation of kilohertz quasi-periodic
oscillations in the sonic-point beat-frequency model. Astrophys. J. 554(2), 1210–1215 (2001)
87. F.K. Lamb, M.C. Miller, Sonic-point and spin-resonance model of the kilohertz QPO pairs.
arXiv e-prints, astro-ph/0308179, August 2003
88. F.K. Lamb, N. Shibazaki, M.A. Alpar, J. Shaham, Quasi-periodic oscillations in bright
galactic-bulge X-ray sources. Nature 317(6039), 681–687 (1985)
89. L.D. Landau, E.M. Lifshitz, Mechanics, Volume 1, 3rd edn. Course of Theoretical Physics
(Butterworth-Heinemann, Oxford, 1976)
90. D.A. Leahy, W. Darbro, R.F. Elsner, M.C. Weisskopf, P.G. Sutherland, S. Kahn, J.E. Grindlay,
On searches for pulsed emission with application to four globular cluster X-ray sources : NGC
1851, 6441, 6624 and 6712. Astrophys. J. 266, 160–170 (1983)
91. H.C. Lee, G.S. Miller, Comptonization and QPO origins in accreting neutron star systems.
Mon. Not. R. Astron. Soc. 299(2), 479–487 (1998)