Ng, Kin-Wang 吳建宏

Joint Research Fellow; Inst. of Physics, AS

photo of Ng, Kin-Wang
Office: AS
Email: nkw _replace_to_@_ phys.sinica.edu.tw

Research Interests

Particle astrophysics and cosmology, early universe, inflationary cosmology and quantum fluctuations, dark matter and cosmic microwave background

Journal Papers affiliated with ASIAA(62)

  1. Bernardo RC; Ng K-W, "Simulating a Gaussian stochastic gravitational wave background signal in pulsar timing arrays", Phys Rev D: 113(4), id.043512 (34 pp), Feb, 2026 [SCI] ( ADS | Fulltext )
  2. Cho H-T; Ng K-W, "Four-point correlation functions in axion inflation", JCAP: 2026(2), id.005 (34 pp), Feb, 2026 [SCI] ( ADS | Fulltext )
  3. Bernardo RC; Ng K-W, "Accurate pulsar timing array residual variances and correlation of the stochastic gravitational-wave background", Phys Rev D: 113(2), id.L021501 (6 pp), Jan, 2026 [SCI] ( ADS | Fulltext )
  4. Bernardo RC; Appleby S; Ng K-W, "Toward a test of Gaussianity of a gravitational wave background", JCAP: 2025, id.017 (25 pp), Jan, 2025 [SCI]
  5. Bernardo RC; Ng K-W, "Charting the Nanohertz Gravitational Wave Sky with Pulsar Timing Arrays", Int J Mod Phys D: 34(4), id.2540013, Jan, 2025 [SCI]
  6. Bernardo RC; Ng K-W, "Beyond the Hellings–Downs curve: Non-Einsteinian gravitational waves in pulsar timing array correlations", A&A: 691, id.A126 (9 pp), Nov, 2024 [SCI]
  7. Bernardo RC; Ng K-W, "Testing gravity with cosmic variance-limited pulsar timing array correlations", Phys Rev D: 109 (10), id.L101502, May, 2024 [SCI]
  8. Bernardo RC; Liu G-C; Ng K-W, "Correlations for an anisotropic polarized stochastic gravitational wave background in pulsar timing arrays", JCAP: 2024(4), id.34(36pp), Apr, 2024 [SCI]
  9. Cheng S-L; Lee D-S; Ng K-W, "Primordial perturbations from ultra-slow-roll single-field inflation with quantum loop effects", JCAP: 2024(3), id.008(25 pp), Mar, 2024 [SCI]
  10. Bernardo RC; Ng K-W, "Looking out for the Galileon in the nanohertz gravitational wave sky", Phys Lett B: 841, id.137939, June, 2023 [SCI]
  11. Bernardo RC; Ng, K-W, "Constraining gravitational wave propagation using pulsar timing array correlations", Phys Rev D: 107(10), id.L101502, May, 2023 [SCI]
  12. Liu G-C; Ng K-W, "Overlap reduction functions for a polarized stochastic gravitational-wave background in the Einstein Telescope-Cosmic Explorer and the LISA-Taiji networks", Phys Rev D: 107(10), id.104040, May, 2023 [SCI]
  13. Bernardo RC; Ng K-W, "Stochastic gravitational wave background phenomenology in a pulsar timing array", Phys Rev D: 107(4), id.044007, Feb, 2023 [SCI]
  14. Bernardo RC; Ng K-W, "Pulsar and cosmic variances of pulsar timing-array correlation measurements of the stochastic gravitational wave background", JCAP: 2022 (11), id.46 (24pp.), Nov, 2022 [SCI]
  15. Liu G-C; Ng K-W, "Timing-residual power spectrum of a polarized stochastic gravitational-wave background in pulsar-timing-array observation", Phys Rev D: 106(6), id.064004, Sep, 2022 [SCI]
  16. Ng K-W, "Redshift-space fluctuations in stochastic gravitational wave background", Phys Rev D: 106(4), id.43505, Aug, 2022 [SCI]
  17. Cheng SL; Lee DS; Ng KW, "Power spectrum of primordial perturbations during ultra-slow-roll inflation with back reaction effects", Phys Lett B: 827, id. 136956, April, 2022 [SCI]
  18. Chu Y-K; Liu G-C; Ng K-W, "Observation of a polarized stochastic gravitational-wave background in pulsar-timing-array experiments", Phys Rev D: 104(12), id.124018, Dec, 2021 [SCI]
  19. Ng K-W; Wu Y-P, "Constant-rate inflation: primordial black holes from conformal weight transitions", Journal of High Energy Physics: 2021 (11), id.76, Nov, 2021 [SCI]
  20. Teng Y-P; Lee W; Ng K-W, "Constraining the dark-energy equation of state with cosmological data", Phys Rev D: 104(8), id.083519 (7pp), Oct, 2021 [SCI]
  21. Chu Y-K; Liu G-C; Ng K-W, "Spherical harmonic analysis of anisotropies in polarized stochastic gravitational-wave background with interferometry experiments", Phys Rev D: 103(6), id.063528, Mar, 2021 [SCI]
  22. Cho H-T; Ng K-W, "Electromagnetic coupling effects in natural inflation", Classical and Quantum Gravity: 37(16), id.165011 (22pp.), Aug, 2020 [SCI]
  23. Chang P-W; Chiang C-W; Ng K-W, "Thermal loop effects on large-scale curvature perturbation in the Higgs inflation", Journal of High Energy Physics: 2020(4), id. 163 (24pp.), Apr, 2020 [SCI]
  24. Huang WC; Ng KW; Yuan TC, "Circularly polarized gamma rays in effective dark matter theory", Phys Lett B: 800, id. 135104 (25 pp.), Jan, 2020 [SCI]
  25. Syu W-C; Lee D-S; Ng K-W, "Quantum loop effects to the power spectrum of primordial perturbations during ultra slow-roll inflation", Phys Rev D: 101(2), id.25013 (13pp.), Jan, 2020 [SCI]
  26. Levshakov SA; Ng K-W; Henkel C; ...; Liu S-Y; Wang W-H; et al., "Testing the weak equivalence principle by differential measurements of fundamental constants in the Magellanic Clouds", MNRAS: 487(4), 5175-5187, Aug, 2019 [SCI]
  27. Lin C-M; Ng K-W; Cheung K, "Chaotic inflation on the brane and the swampland criteria", Phys Rev D: 100(2), id. 023545 (6 pp.), July, 2019 [SCI]
  28. Cheng S-L; Lee WL; Ng K-W, "Superhorizon curvature perturbation in ultraslow-roll inflation", Phys Rev D: 99(6), id. 063524 (6 pp.), Mar, 2019 [SCI]
  29. Cheung K; Kuo J-L; Ng K-W; et al., "The impact of EDGES 21-cm data on dark matter interactions", Phys Lett B: 789, 137-144, Feb, 2019 [SCI]
  30. Huang WC; Ng KW, "Polarized gamma rays from dark matter annihilations", Phys Lett B: 783, 29-35, Aug, 2018 [SCI]
  31. Cheng S-L; Lee W; Ng K-W, "Primordial black holes and associated gravitational waves in axion monodromy inflation", JCAP: 7, id. 001, July, 2018 [SCI]
  32. Chang CC; Lee W; Ng KW, "Spherical collapse models with clustered dark energy", Physics of the Dark Universe: 19, 12-20, March, 2018 [SCI]
  33. Levshakov SA; Ng K-W; Henkel C; Mookerjea B, "[C i], [C II] and CO emission lines as a probe for α variations at low and high redshifts", MNRAS: 471(2), 2143-2150, Oct, 2017 [SCI]
  34. Liu G-C; Ng K-W, "Axion dark matter induced cosmic microwave background B modes", Physics of the Dark Universe: 16, 22-25, June, 2017 [SCI]
  35. Cheng S-L; Lee W; Ng K-W, "Production of high stellar-mass primordial black holes int rapped inflation", Journal of High Energy Physics: 2, 008, Feb 1, 2017 [SCI]
  36. Cheng SL; Lee W; Ng KW, "Numerical study of pseudoscalar inflation with an axion-gauge field coupling", Phys Rev D: 93(6), 063510, March, 2016 [SCI]
  37. Lee S; Liu GC; Ng KW, "Dark Ultra-Light Scalars and Cosmic Parity Violation", Universe-Taipei: 4(4), 29-44, Oct-Dec, 2016
  38. Lee S; Liu GC; Ng KW, "Cosmic birefringence fluctuations and cosmic microwave background B-mode polarization", Phys Lett B: 746, 406-409, Jun 30, 2015 [SCI]
  39. Liu G-C; Ng K-W; Wang I-C, "Naturally large tensor-to-scalar ratio in inflation", Phys Rev D: 90(10), 103531, Nov, 2014 [SCI]
  40. Lee S; Liu G-C; Ng K-W, "Imprint of scalar dark energy on cosmic microwave background polarization", Phys Rev D: 89(6), 063010, March, 2014 [SCI]
  41. Lin C-M; Ng K-W, "Primordial black holes from passive density fluctuations", Phys Lett B: 718(4-5), 1181-1185, Jan, 2013 [SCI]
  42. Ng KW, "Damping of tensor modes in inflation", Phys Rev D: 86(10), 103510, Nov 7, 2012 [SCI]
  43. Lee S; Ng KW, "Growth Index with the Cosmological Constant", Chinese J Phys: 50(3), 367-374, June, 2012 [SCI]
  44. Liu GC; Ng KW; Pen UL, "Improved dark energy detection through the polarization-assisted cross correlation of the cosmic microwave background with radio sources", Phys Rev D: 83(6), 063001, Mar 2, 2011 [SCI]
  45. Lee S; Ng KW, "Spherical collapse model with non-clustering dark energy", JCAP: 10, 028, Oct, 2010 [SCI]
  46. Lee S; Ng KW, "Properties of the exact analytic solution of the growth factor and its applications", Phys Rev D: 82(4), Art. No. 043004, Aug 10, 2010 [SCI]
  47. Lee S; Ng KW, "Growth index with the exact analytic solution of sub-horizon scale linear perturbation for dark energy models with constant equation of state", Phys Lett B: 688(1), 1-3, Apr 26, 2010 [SCI]
  48. Lee S; Liu GC; Ng KW, "Effects on the two-point correlation function from the coupling of quintessence to dark matter", Phys Rev D: 81(6), Art. No. 061302, Mar 15, 2010 [SCI]
  49. Ho PTP; Altamirano P; Chang C-H; Chang S-H; Chang S-W; Chen C-C; Chen K-J; Chen M-T; Han C-C; Ho WM; Huang Y-D; Hwang Y-J; Ibañez-Romano F; Jiang H; Koch PM; Kubo DY; Li C-T; Lim J; Lin K-Y; Liu G-C; Lo K-Y; Ma C-J; Martin RN; Martin-Cocher P; Molnar SM; Ng K-W; Nishioka H; O'Connell KE; Oshiro P; Patt F; Raffin P; Umetsu K; Wei T; et al., "The Yuan-Tseh Lee Array for Microwave Background Anisotropy", ApJ: 694(2), 1610-1618, April 1, 2009 [SCI]
  50. Ho PTP; Altimirano P; Birkinshaw M; Chang SW; Chang CH; Chen KJ; Chen M; Chiueh TD; Chiueh T; Chu TH; Han CC; Huang CW; Huang YD; Hwang WYP; Hwang YJ; Jiang H; Kesteven M; Koch P; Kubo D; Lancaster K; Li CT; Liang H; Liao YW; Lim J; Lin YS; Lin KY; Liu GC; Lo KY; Ma CJ; Martin-Cocher P; Martin RN; Molnar S; Ng KW; Nishioka H; Park CG; Patt F; Peterson JB; Raffin P; Romano F; Wang H; Umetsu K; Wang FC; Wu JHP, "The Yuan Tseh Lee AMiBA Project", MPLA: 23(20), 1243-1251, June, 2008 [SCI]
  51. Ng KW, "Some issues in CMB polarization observation", MPLA: 22(25-28), 1901-1910, Sep 14, 2007 [SCI]
  52. Lee S; Ng KW, "Can strong gravitational lensing constrain dark energy?", Phys Rev D: 76(4), 043518, Aug, 2007 [SCI]
  53. Liu G-C; Lee S; Ng K-W, "Effect on Cosmic Microwave Background Polarization of Coupling of Quintessence to Pseudoscalar Formed from the Electromagnetic Field and its Dual", Phys Rev Lett: 97(16), 161303, Oct 20, 2006 [SCI]
  54. Lee S; Liu GC; Ng KW, "Constraints on the coupled quintessence from cosmic microwave background anisotropy and matter power spectrum", Phys Rev D: 73(8), 083516, Apr, 2006 [SCI]
  55. Ng KW, "Full-sky correlation functions for CMB experiments with asymmetric window functions", Phys Rev D: 71(8), 083009, Apr, 2005 [SCI]
  56. Chou C-H; Ng K-W, "Decaying Superheavy Dark Matter and Subgalactic Structure of the Universe", Phys Lett B: 594(1-2), 1-7, Jul 29, 2004 [SCI]
  57. Park C-G; Ng K-W, "E/B Separation in Cosmic Microwave Background Interferometry", ApJ: 609(1), 15-21, Jul 1, 2004 [SCI]
  58. Cortiglioni S; Bernardi G; ...; Ng KW; et al, "The Sky Polarization Observatory (SPOrt)", New Astron: 9(4), 297-327, May, 2004 [SCI]
  59. Ho PTP; Chen M-T; ...; Chiueh T; Chu T-H; Jiang H; Koch P; Kubo D; Li C-T; ...; Lin K-Y; Liu G-C; Lo K-Y; Ma C-J; Martin RN; Ng K-W; Nishioka H; Patt F; ...; Wang H; Hwang Y-J; Umetsu K; et al., "The AMiBA Project", MPLA: 19(13-16), 993-1000, May 30, 2004 [SCI]
  60. Park CG; Ng KW; ...; Liu GC; Umetsu K, "Observational Strategies of Cosmic Microwave Background Temperature and Polarization Interferometry Experiments", ApJ: 589(1), 67-81, May 20, 2003 [SCI]
  61. Ng KW, "Complex visibilities of cosmic microwave background anisotropies", Phys Rev D: 63(12), 123001, Jun 15, 2001 [SCI]
  62. Ng KW, "Tensor-induced CMB temperature-polarization correlation in reionized universes", Phys Rev D: 60(4), 047302, Aug 15, 1999 [SCI]