[1] L. J. Kaluzienski, S. S. Holt, E. A. Boldt and P. J. Serlemitsos, “Evidence for a 16.6 Day Period from Circinus X-1,” Astrophysical Journal, Vol. 208, No. 2, 1976, pp. L71-L75. doi:10.1086/182235
[2] G. L. Case and D. Bhattacharya, “A New Sigma-D Relation and Its Application to the Galactic Supernova Remnant Distribution,” Astrophysical Journal, Vol. 504, No. 2, 1988, pp. 761-772. doi:10.1086/306089
[3] B. Margon, M. Lampton, S. Bowyer and R. Cruddace, “A Pulsing X-Ray Source in Circinus,” Astrophysical Journal, Vol. 169, 1971, pp. L23-L25. doi:10.1086/180806
[4] A. Toor, “Millisecond X-Ray Bursts from Circinus X-1,” Astrophysical Journal, Vol. 215, No. 2, 1977, pp. L57-L60. doi:10.1086/182477
[5] G. D. Nicolson, I. S. Glass and M. W. Feast, “Recent Changes in the Optical, Infrared and Radio Emission from Circinus X-1,” Monthly Notices of the Royal Astronomical Society, Vol. 191, 1980, pp. 293-299.
[6] R. A. Preston, D. D. Morabito, A. E. Wehrle, D. L. Jauncey, M. J. Batty, R. F. Haynes, A. E. Wright and G. D. Nicolson, “VLBI Observations of a Radio Flare of Circinus X-1,” Astrophysical Journal, Vol. 268, No. 2, 1983, pp. L23-L26. doi:10.1086/184022
[7] A. F. Tennant, A. C. Fabian and R. A. Shafer, “The Discovery of X-Ray Bursts from CIR X-1,” Monthly Notices of the Royal Astronomical Society, Vol. 219, 1986, pp. 871-881.
[8] A. F. Tennant, A. C. Fabian and R. A. Shafer, “Observation of Type I X-Ray Bursts from CIR X-1,” Monthly Notices of the Royal Astronomical Society, Vol. 221, 1986, pp. 27P-31P.
[9] A. F. Tennant, “High-Frequency Oscillations from CIR X-1,” Monthly Notices of the Royal Astronomical Society, Vol. 226, 1987, pp. 971-978.
[10] A. F. Tennant, “Observations of 1.4-Hz Quasi-Periodic Oscillations in CIR X-1,” Monthly Notices of the Royal Astronomical Society, Vol. 230, 1988, pp. 403-404.
[11] J. L. Qu, W. Yu and T. P. Li, “The Cross Spectra of Circinus X-1: Evolution of Time Lags,” The Astrophysical Journal, Vol. 555, No. 1, 2001, pp. 7-11. doi:10.1086/321460
[12] J. L. Qu, Y. Lu, G. Q. Ding, F. Zhang, Y. J. Lei and Z. B. Li, “The Time Lag Spectrum of Cir X-1 on Its Normal Branch,” Science China Physics, Mechanics and Astronomy, Vol. 53, No. 1, 2010, pp. 60-63. doi:10.1007/s11433-010-0035-z
[13] R. T. Stewart, J. L. Caswell, R. F. Haynes and G. J. Nelson, “Circinus X-1—A Runaway Binary with Curved Radio Jets,” Monthly Notices of the Royal Astronomical Society, Vol. 261, No. 3, 1993, pp. 593-598.
[14] T. Oosterbroek, M. van der Klis, E. Kuulkers, J. van Paradijs and W. H. G. Lewin, “Circinus X-1 Revisited: Fast-Timing Properties in Relation to Spectral State,” Astronomy and Astrophysics, Vol. 297, No. 1, 1995, pp. 141-158.
[15] W. N. Brandt, A. C. Fabian, T. Dotani, F. Nagase, H. Inoue, T. Kotani and Y. Segawa, “ASCA Observations of the Iron K Complex of Circinus X-1 near Zero Phase: Spectral Evidence for Partial Covering”, Monthly Notices of the Royal Astronomical Society, Vol. 283, No. 3, 1996, pp. 1071-1082.
[16] R. E. Shirey, H. V. Bradt, A. M. Levine and E. H. Morgan, “Quasi-Periodic Oscillations Associated with Spectral Branches in Rossi X-Ray Timing Explorer Observations of Circinus X-1,” The Astrophysical Journal, Vol. 506, No. 1, 1998, pp. 374-383. doi:10.1086/306247
[17] R. E. Shirey, H. V. Bradt and A. M. Levine, “The Complete “Z” Track of Circinus X-1,” The Astrophysical Journal, Vol. 517, No. 1, 1999, pp. 472-487. doi:10.1086/307188
[18] W. N. Brandt and N. S. Schulz, “The Discovery of Broad P Cygni X-Ray Lines from Circinus X-1 with the Chandra High-Energy Transmission Grating Spectrometer,” The Astrophysical Journal, Vol. 544, No. 2, 2000, pp. L123-L127. doi:10.1086/317313
[19] G. Q. Ding, J. L. Qu and T. P. Li, “Evolution of Hard X-Ray Spectra along the Branches in Circinus X-1,” The Astrophysical Journal, Vol. 596, No.2, 2003, pp. L219-L222. doi:10.1086/379338
[20] S. Boutloukos, M. van der Klis, D. Altamirano, M. Klein-Wolt, R. Wijnands, P. G. Jonker and R. P. Fender, “Discovery of Twin kHz QPOs in the Peculiar X-Ray Binary Circinus X-1,” The Astrophysical Journal, Vol. 653, No. 2, 2006, pp. 1435-1444. doi:10.1086/508934
[21] R. Fender, K. Wu, H. Johnston, T. Tzioumis, P. Jonker, R. Spencer and M. van der Klis, “An Ultra-Relativistic Outflow from a Neutron Star Accreting Gas from a Companion,” Nature, Vol. 427, No. 6971, 2004, pp. 222-224. doi:10.1038/nature02137
[22] S. Heinz, N. S. Schulz, W. N. Brandt and D. K. Galloway, “Evidence of a Parsec-Scale X-Ray Jet from the Accreting Neutron Star Circinus X-1,” The Astrophysical Journal, Vol. 663, No. 2, 2007, pp. L93-L96. doi:10.1086/519950
[23] D. E. Calvelo, R. P. Fender, A. K. Tzioumis, N. Kawai, J. W. Broderick and M. E. Bell, “Radio Observations of Circinus X-1 over a Complete Orbit at an Historically Faint Epoch,” Monthly Notices of the Royal Astronomical Society, Vol. 419, No. 1, 2012, pp. 436-451. doi:10.1111/j.1365-2966.2011.19708.x
[24] D. E. Calvelo, R. P. Fender, A. K. Tzioumis and J. W. Broderick, “Millimetre Observations of a Sub-Arcsecond Jet from Circinus X-1,” Monthly Notices of the Royal Astronomical Society: Letters, Vol. 419, No. 1, 2012, pp. L54-L58. doi:10.1111/j.1745-3933.2011.01175.x
[25] J. C. A. Miller-Jones, A. Moin, S. J. Tingay, C. Reynolds, C. J. Phillips, A. K. Tzioumis, R. P. Fender, N. J. McCallum, G. D. Nicolson and V. Tudose, “The First Resolved Imaging of Milliarcsecond-Scale Jets in Circinus X-1,” Monthly Notices of the Royal Astronomical Society: Letters, Vol. 419, No. 1, 2012, pp. L49-L53. doi:10.1111/j.1745-3933.2011.01176.x
[26] P. Soleri, S. Heinz, R. A. Fender, R. Wijnands, V. tudose, D. Altamirano. P. G. Jonker, M. van der Klis, L. Kuiper, C. Kaiser and P. Casella, “ A Parsec Scale X-Ray Extended Structure from the X-Ray Binary Circinus X-1,” Monthly Notices of the Royal Astronomical Society: Letters, Vol. 397, No. 1, 2009, pp. L1-L5. doi:10.1111/j.1745-3933.2008.00574.x
[27] P. H. Sell, S. Heinz, D. E. Calvelo, V. Tudose, P. Soleri, R. P. Fender, P. G. Jonker, N. S. Schulz, W. N. Brandt, M. A. Nowak, “Parsec-Scale Bipolar X-Ray Shocks Produced by Powerful Jets from the Neutron Star Circinus X-1,” The Astrophysical Journal, Vol. 719, No. 2, 2010, pp. L194-L198. doi:10.1088/2041-8205/719/2/L194
[28] N. S. Schulz and W. N. Brandt, “Variability of the X-Ray P Cygni Line Profiles from Circinus X-1 near Zero Phase,” The Astrophysical Journal, Vol. 572, No. 2, 2002, pp. 971-983. doi:10.1086/340369
[29] G. T?r?k, P. Bakala, E. ?rámková, Z. Stuchlík and M. Urbanec, “On Mass Constraints Implied by the Relativistic Precession Model of Twin-Peak Quasi-Periodic Oscillations in Circinus X-1,” The Astrophysical Journal, Vol. 714, No. 1, 2010, pp. 748-757. doi:10.1088/0004-637X/714/1/748
[30] A. D’Aì, E. Bozzo, A. Papitto, R. Iaria, T. Di Salvo1 L. Burderi, A. Riggio, E. Egron and N. R. Robba, “A Complete X-Ray Spectral Coverage of the 2010 May-June Outbursts of Circinus X-1,” Astronomy & Astrophysics, Vol. 543, 2012, p. 20. doi:10.1051/0004-6361/201118577
[31] P. Murdin, D. L. Jauncey, I. Lerche, G. D. Nicolson, L. J. Kaluzienski, S. S. Holt and R. F. Haynes, “Binary Model of Circinus X-1. I—Eccentricity from Combined X-Ray and Radio Observations,” Astronomy and Astrophysics, Vol. 87, No. 3, 1980, pp. 292-298.
[32] T. M. Tauris, R. P. Fender, E. P. J. van den Heuvel, H. M. Johnston and K. Wu, “Circinus X-1: Survivor of a Highly Asymmetric Supernova,” Monthly Notices of the Royal Astronomical Society, Vol. 310, No. 4, 1999, pp. 1165- 1169. doi:10.1046/j.1365-8711.1999.03068.x
[33] H. M. Johnston, R. Fender and K. Wu, “High-Resolution Optical and Infrared Spectroscopic Observations of CIR X-1,” Monthly Notices, Vol. 308, No. 2, 1999, pp. 415- 423. doi:10.1046/j.1365-8711.1999.02702.x
[34] R. Iaria, T. Di Salvo, L. Burderi and N. R. Robba, “Spectral Evolution of Circinus X-1 along Its Orbit,” The Astrophysical Journal, Vol. 561, No. 1, 2001, pp. 321-328. doi:10.1086/323226
[35] G. Q. Ding, S. N. Zhang, T. P. Li and J. L. Qu, “Evolution of Hard X-Ray Spectra along the Orbital Phase in Circinus X-1,” The Astrophysical Journal, Vol. 645, No. 1, 2006, pp. 576-588. doi:10.1086/504308
[36] R. E. Shirey, H. V. Bradt, A. M. Levine and E. H. Morgan, “X-Ray Timing and Spectral Evolution of Circinus X-1 versus Orbital Phase with the Rossi X-Ray Timing Explorer,” The Astrophysical Journal, Vol. 469, No. 1, 1996, pp. L21-L24. doi:10.1086/310264
[37] R. T. Stewart, G. J. Nelson, W. Penninx, S. Kitamoto, S. Miyamoto and G. D. Nicolson, “On the Puzzling Nature of the X-Ray Binary Circinus X-1,” Monthly Notices of the Royal Astronomical Society, Vol. 253, 1991, pp. 212- 216.
[38] R. E. Shirey, H. V. Bradt and A. M. Levine, “The Complete “Z” Track of Circinus X-1,” The Astrophysical Journal, Vol. 517, No. 1, 1999, pp. 472-487. doi:10.1086/307188
[39] R. Iaria, T. Di salvo, N. R. Robba and L. Burderi, “Study of the Circinus X-1 Broadband Spectrum at Orbital Phases Close to the Apoastron,” The Astrophysical Journal, Vol. 567, No. 1, 2002, pp. 503-509. doi:10.1086/338507
[40] F. K. Lamb, C. J. Pethick and D. Pines, “A Model for Compact X-Ray Sources: Accretion by Rotating Magnetic Stars,” The Astrophysical Journal, Vol. 184, 1973, pp. 271-290. doi:10.1086/152325
[41] H. L. Burger and I. J. Katz, “The Eddington Limit and Supercritical Accretion. II—Time-Dependent Calculations,” The Astrophysical Journal, Vol. 265, 1983, pp. 393-401. doi:10.1086/160684
[42] G. Q. Ding, J. L. Qu and T. P. Li, “Partial Covering during Long-Term Dips in Circinus X-1,” The Astronomical Journal, Vol. 131, No. 3, 2006, pp. 1693-1701. doi:10.1086/499921
[43] K. Asai, T. Dotani, K. Mitsuda, F. Nagase, Y. Kamado, E. Kuulkers and L. M. Lorraine, “Spectral Variations along the Branches in GX 5-1,” Publications of the Astronomical Society of Japan, Vol. 46, No. 5, 1994, pp. 479-491.
[44] K. Mitsuda, H. Inoue, K. Koyama, K. Makishima, M. Matsuoka, Y. Ogawara, K. Suzuki, Y. Tanaka, N. Shibazaki and T. Hirano, “Energy Spectra of Low-Mass Binary X-Ray Sources Observed from TENMA,” Publications of the Astronomical Society of Japan, Vol. 36, No. 4, 1984, pp. 741-759.
[45] D. Lin, R. A. Remillard and J. Homan, “Spectral States of XTE J1701-462: Link Between Z and Atoll Sources,” The Astrophysical Journal, Vol. 696, No. 2, 2009, pp. 1257- 1277. doi:10.1088/0004-637X/696/2/1257
[46] G. Q. Ding, S. N. Zhang, N. Wang, J. L. Qu and S. P. Yan, “On the Nature of the First Transient Z Source XTE J1701-462: Its Accretion Disk Structure, Neutron Star Magnetic Field Strength, and Hard Tail,” The Astronomical Journal, Vol. 142, No. 2, 2011, pp. 34-51. doi:10.1088/0004-6256/142/2/34
[47] S. N. Zhang, W. Cui and W. Chen, “Black Hole Spin in X-Ray Binaries: Observational Consequences,” The Astronomical Journal, Vol. 482, No. 2, pp. L155-L158. doi:10.1086/310705