All Stories

  1. Do they repeat? Monitoring 36 non-repeating FRBs with FAST

    Article • Monthly Notices of the Royal Astronomical Society, June 2025, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  2. Physical properties and gas kinematics of massive star forming region G328.24−0.55

    Article • Monthly Notices of the Royal Astronomical Society, May 2025, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  3. High-resolution radio observations of massive protostars in the SARAO MeerKAT Galactic Plane Survey

    Article • Monthly Notices of the Royal Astronomical Society, May 2025, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  4. Supernova remnant candidates discovered by the SARAO MeerKAT Galactic Plane Survey

    Article • Astronomy and Astrophysics, January 2025, EDP Sciences

    Prof. James Okwe Chibueze

  5. Spiral Arm, Rotating Structure and Outflow Cavity in Massive Star-Forming Region G23.43−0.18

    Article • Monthly Notices of the Royal Astronomical Society, December 2024, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  6. ATOMS: ALMA three-millimeter observations of massive star-forming regions – XIX. The origin of SiO emission

    Article • Monthly Notices of the Royal Astronomical Society, December 2024, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  7. Identifying the mechanisms of water maser variability during the accretion burst in NGC6334I

    Article • Astronomy and Astrophysics, November 2024, EDP Sciences

    Prof. James Okwe Chibueze

  8. Non-thermal radio emission from massive protostars in the SARAO MeerKAT Galactic Plane Survey

    Article • Monthly Notices of the Royal Astronomical Society, September 2024, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  9. MeerKAT and ALMA view of the AGAL045.804 − 0.356 clump

    Article • Monthly Notices of the Royal Astronomical Society, April 2024, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  10. Spectroscopic Imaging of the Sun with MeerKAT: Opening a New Frontier in Solar Physics

    Article • The Astrophysical Journal, January 2024, American Astronomical Society

    Prof. James Okwe Chibueze

  11. The ORT and the uGMRT pulsar monitoring program: Pulsar timing irregularities & the Gaussian process realisation

    Article • Publications of the Astronomical Society of Australia, January 2024, Cambridge University Press

    Prof. James Okwe Chibueze

  12. Limits of water maser kinematics: insights from the high-mass protostar AFGL 5142-MM1

    Article • Monthly Notices of the Royal Astronomical Society, December 2023, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  13. Direct Observational Evidence of the Multi-scale, Dynamical Mass Accretion Toward a High-mass Star-forming Hub-filament System

    Article • The Astrophysical Journal, August 2023, American Astronomical Society

    Prof. James Okwe Chibueze

  14. A subarcsec localized fast radio burst with a significant host galaxy dispersion measure contribution

    Article • Monthly Notices of the Royal Astronomical Society, June 2023, Oxford University Press (OUP)

    Prof. James Okwe Chibueze, Ms Laura Nicole Driessen

  15. Ammonia mapping observations of the Galactic infrared bubble N49: Three NH3 clumps along the molecular filament

    Article • Publications of the Astronomical Society of Japan, February 2023, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  16. Probing gas kinematics towards the high-mass protostellar object G358.46−0.39

    Article • Monthly Notices of the Royal Astronomical Society, February 2023, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  17. Identifying Zeeman pairs of hydroxyl masers in NGC 6334I-MM3 via velocity drift

    Article • Monthly Notices of the Royal Astronomical Society, January 2023, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  18. Overview of the Observing System and Initial Scientific Accomplishments of the East Asian VLBI Network (EAVN)

    Article • Galaxies, December 2022, MDPI AG

    Prof. James Okwe Chibueze

  19. Maser Science with the African VLBI Network and MeerKAT

    Article • Proceedings of the International Astronomical Union, December 2022, Cambridge University Press

    Prof. James Okwe Chibueze

  20. Multi-scale observational study of G45.804-0.355 star-forming region

    Article • Proceedings of the International Astronomical Union, December 2022, Cambridge University Press

    Prof. James Okwe Chibueze

  21. Spatio-kinematics of water masers in the HMSFR NGC6334I before and during an accretion burst

    Article • Proceedings of the International Astronomical Union, December 2022, Cambridge University Press

    Prof. James Okwe Chibueze

  22. Water maser flare and potential accretion burst in NGC 2071-IR

    Article • Proceedings of the International Astronomical Union, December 2022, Cambridge University Press

    Prof. James Okwe Chibueze

  23. Two periods instead of one in a single 6.7 GHz methanol maser feature in G9.62+0.20E

    Article • Monthly Notices of the Royal Astronomical Society Letters, August 2022, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  24. A MeerKAT, e-MERLIN, H.E.S.S., and Swift search for persistent and transient emission associated with three localized FRBs

    Article • Monthly Notices of the Royal Astronomical Society, June 2022, Oxford University Press (OUP)

    Prof. James Okwe Chibueze, Ms Laura Nicole Driessen

  25. SoUthern Cluster sCale Extended Source Survey (SUCCESS): a GMRT and Meerkat study of nine massive galaxy clusters

    Article • Monthly Notices of the Royal Astronomical Society, June 2022, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  26. Ammonia mapping observations toward the Galactic massive star-forming region Sh 2-255 and Sh 2-257

    Article • Publications of the Astronomical Society of Japan, April 2022, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  27. MeerKAT’s view of double radio relic galaxy cluster Abell 3376

    Article • Publications of the Astronomical Society of Japan, March 2022, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  28. The Composition and Power of the Jet of the Broad-line Radio Galaxy 3C 120

    Article • The Astrophysical Journal Letters, March 2022, American Astronomical Society

    Prof. James Okwe Chibueze

  29. MeerKAT view of the diffuse radio sources in Abell 3667 and their interactions with the thermal plasma

    Article • Astronomy and Astrophysics, March 2022, EDP Sciences

    Prof. James Okwe Chibueze

  30. Orientation effect on the light-curve shape of periodic methanol maser sources

    Article • Monthly Notices of the Royal Astronomical Society, August 2021, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  31. Parsec scale CO depletion in KAGONMA 71, or a star-forming filament in CMa OB1

    Article • Proceedings of the International Astronomical Union, August 2021, Cambridge University Press

    Prof. James Okwe Chibueze

  32. Star formation feedback onto molecular clouds of KAGONMA sources using temperature distribution

    Article • Proceedings of the International Astronomical Union, August 2021, Cambridge University Press

    Prof. James Okwe Chibueze

  33. Jets from MRC 0600-399 bent by magnetic fields in the cluster Abell 3376

    Article • Nature, May 2021, Springer Science + Business Media

    Prof. James Okwe Chibueze

  34. The Extraordinary Outburst in the Massive Protostellar System NGC 6334 I-MM1: Spatiokinematics of Water Masers during a Contemporaneous Flare Event

    Article • The Astrophysical Journal, February 2021, American Astronomical Society

    Prof. James Okwe Chibueze

  35. The Pan-African School for Emerging Astronomers

    Article • Nature Astronomy, February 2021, Springer Science + Business Media

    Prof. James Okwe Chibueze

  36. Monitoring the radio emission of Proxima Centauri

    Article • Astronomy and Astrophysics, January 2021, EDP Sciences

    Prof. James Okwe Chibueze

  37. Systematic velocity drifts of methanol masers associated with G9.62+0.20E

    Article • Monthly Notices of the Royal Astronomical Society, November 2020, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  38. Astrometry and infrared observations of the Mira variable stars AP Lyncis, V837 Herculis, and BX Camelopardalis: Implications for the period–luminosity relation of the Milky Way

    Article • Publications of the Astronomical Society of Japan, June 2020, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  39. Multiple Outflows in the High-mass Cluster-forming Region G25.82–0.17

    Article • The Astrophysical Journal, June 2020, American Astronomical Society

    Prof. James Okwe Chibueze

  40. Star formation rates in the L 1482 filament of the California molecular cloud

    Article • Publications of the Astronomical Society of Japan, June 2020, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  41. Trigonometric parallax of O-rich Mira variable star OZ Gem (IRAS 07308+3037): A confirmation of the difference between the P–L relations of the Large Magellanic Cloud and the Milky Way

    Article • Publications of the Astronomical Society of Japan, May 2020, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  42. Astrometry of H2O masers in the W 48 A (G35.20−01.74) H ii region with VERA: A compact disk outflow inside core H-2a

    Article • Publications of the Astronomical Society of Japan, April 2020, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  43. The First VERA Astrometry Catalog

    Article • Publications of the Astronomical Society of Japan, April 2020, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  44. 13CH3OH Masers Associated With a Transient Phenomenon in a High-mass Young Stellar Object

    Article • The Astrophysical Journal Letters, February 2020, American Astronomical Society

    Prof. James Okwe Chibueze

  45. A heatwave of accretion energy traced by masers in the G358-MM1 high-mass protostar

    Article • Nature Astronomy, January 2020, Springer Science + Business Media

    Prof. James Okwe Chibueze

  46. VLBI observations of the G25.65+1.05 water maser superburst

    Article • Monthly Notices of the Royal Astronomical Society, November 2019, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  47. Detection of new methanol maser transitions associated with G358.93−0.03

    Article • Monthly Notices of the Royal Astronomical Society, September 2019, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  48. Annual parallax and galactic orbit of Y Librae (IRAS 15090−0549) Mira variable star—GALORB release

    Article • Publications of the Astronomical Society of Japan, September 2019, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  49. Sub-arcsecond (Sub)millimeter Imaging of the Massive Protocluster G358.93−0.03: Discovery of 14 New Methanol Maser Lines Associated with a Hot Core

    Article • The Astrophysical Journal Letters, August 2019, American Astronomical Society

    Prof. James Okwe Chibueze

  50. NH3 observations of the S235 star-forming region: Dense gas in inter-core bridges

    Article • Publications of the Astronomical Society of Japan, July 2019, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  51. First principles study of the structural, electronic and magnetic properties of w-CoS

    Article • Physica B Condensed Matter, February 2019, Elsevier

    Prof. James Okwe Chibueze

  52. The Extraordinary Outburst in the Massive Protostellar System NGC 6334I-MM1: Flaring of the Water Masers in a North–South Bipolar Outflow Driven by MM1B

    Article • The Astrophysical Journal, October 2018, American Astronomical Society

    Prof. James Okwe Chibueze

  53. A masing event in NGC 6334I: contemporaneous flaring of hydroxyl, methanol, and water masers

    Article • Monthly Notices of the Royal Astronomical Society, April 2018, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  54. The Extraordinary Outburst in the Massive Protostellar System NGC 6334I-MM1: Emergence of Strong 6.7 GHz Methanol Masers

    Article • The Astrophysical Journal, February 2018, American Astronomical Society

    Prof. James Okwe Chibueze

  55. A new Pulsar Timing System for a new Radio Telescope in Ghana.

    Article • Proceedings of the International Astronomical Union, September 2017, Cambridge University Press

    Thomas William Scragg, Prof. James Okwe Chibueze

  56. The extraordinary outburst in NGC6334I-MM1: dimming of the hypercompact HII region and destruction of water masers

    Article • Proceedings of the International Astronomical Union, September 2017, Cambridge University Press

    Prof. James Okwe Chibueze

  57. Class II 6.7 GHz Methanol Maser Association with Young Massive Cores Revealed by ALMA

    Article • Proceedings of the International Astronomical Union, September 2017, Cambridge University Press

    Prof. James Okwe Chibueze

  58. Sub-mm observations of periodic methanol masers

    Article • Proceedings of the International Astronomical Union, September 2017, Cambridge University Press

    Prof. James Okwe Chibueze

  59. The extraordinary outburst in NGC6334I-MM1: the rise of dust and emergence of 6.7 GHz methanol masers

    Article • Proceedings of the International Astronomical Union, September 2017, Cambridge University Press

    Prof. James Okwe Chibueze

  60. Understanding high-mass star formation through KaVA observations of water and methanol masers

    Article • Proceedings of the International Astronomical Union, September 2017, Cambridge University Press

    Prof. James Okwe Chibueze

  61. FOREST unbiased Galactic plane imaging survey with the Nobeyama 45 m telescope (FUGIN). I. Project overview and initial results

    Article • Publications of the Astronomical Society of Japan, August 2017, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  62. Bow shocks in a newly discovered maser source in IRAS 20231+3440

    Article • Monthly Notices of the Royal Astronomical Society, May 2017, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  63. An Extraordinary Outburst in the Massive Protostellar System NGC 6334I-MM1: Quadrupling of the Millimeter Continuum

    Article • The Astrophysical Journal Letters, March 2017, American Astronomical Society

    Prof. James Okwe Chibueze

  64. Class II 6.7 GHz Methanol Maser Association with Young Massive Cores Revealed by ALMA

    Article • The Astrophysical Journal, February 2017, American Astronomical Society

    Prof. James Okwe Chibueze

  65. Interaction between the H ii region and AFGL 333-Ridge: Implications for the star formation scenario

    Article • Publications of the Astronomical Society of Japan, January 2017, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  66. Sharpless-76E: Astrometry and Outflows in a Protostellar Cluster

    Article • Monthly Notices of the Royal Astronomical Society, January 2017, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  67. THE SCALING RELATIONS AND STAR FORMATION LAWS OF MINI-STARBURST COMPLEXES

    Article • The Astrophysical Journal, December 2016, American Astronomical Society

    Prof. James Okwe Chibueze

  68. Annual parallax and a dimming event of a Mira variable star, FV Bootis

    Article • Publications of the Astronomical Society of Japan, August 2016, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  69. Astrometry and expanding bubble of a deeply embedded young stellar object in M17

    Article • Monthly Notices of the Royal Astronomical Society, April 2016, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  70. SiO MASERS AROUND WX PSC MAPPED WITH THE KVN AND VERA ARRAY (KaVA)

    Article • The Astrophysical Journal, April 2016, American Astronomical Society

    Prof. James Okwe Chibueze

  71. NEAR-INFRARED OBSERVATIONS OF SiO MASER-EMITTING ASYMPTOTIC GIANT BRANCH (AGB) STARS

    Article • The Astrophysical Journal, January 2016, American Astronomical Society

    Prof. James Okwe Chibueze

  72. Sgr B2(N): A BIPOLAR OUTFLOW AND ROTATING HOT CORE REVEALED BY ALMA

    Article • The Astrophysical Journal, December 2015, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  73. ASTROMETRY OF IRAS 22555+6213 WITH VERA: A 3-DIMENSIONAL VIEW OF SOURCES ALONG THE SAME LINE OF SIGHT

    Article • Publications of The Korean Astronomical Society, September 2015, The Korean Astronomical Society

    Prof. James Okwe Chibueze

  74. THE 2014 ALMA LONG BASELINE CAMPAIGN: AN OVERVIEW

    Article • The Astrophysical Journal Letters, July 2015, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  75. Astrometry of Galactic star-forming region IRAS 20126+4104 with VERA

    Article • Publications of the Astronomical Society of Japan, February 2015, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  76. IRAS 16547–4247: A NEW CANDIDATE OF A PROTOCLUSTER UNVEILED WITH ALMA

    Article • The Astrophysical Journal Letters, December 2014, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  77. Trigonometric parallax of IRAS 22555+6213 with VERA: Three-dimensional view of sources along the same line of sight

    Article • Publications of the Astronomical Society of Japan, December 2014, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  78. VLBI observations of H2O maser annual parallax and proper motion in IRAS 20143+3634: Reflection on the Galactic constants

    Article • Publications of the Astronomical Society of Japan, December 2014, Oxford University Press (OUP)

    Prof. James Okwe Chibueze

  79. THE FIRST VERY LONG BASELINE INTERFEROMETRY IMAGE OF A 44 GHz METHANOL MASER WITH THE KVN AND VERA ARRAY (KaVA)

    Article • The Astrophysical Journal Letters, June 2014, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  80. ALMA VIEW OF G0.253+0.016: CAN CLOUD-CLOUD COLLISION FORM THE CLOUD?

    Article • The Astronomical Journal, May 2014, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  81. ANNUAL PARALLAX DETERMINATION TOWARD A NEW X-RAY-EMITTING CLASS 0 CANDIDATE WITH THE WATER MASER IN THE NGC 2264 STAR-FORMING REGION

    Article • The Astrophysical Journal Supplement Series, March 2014, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  82. ASTROMETRY AND SPATIO-KINEMATICS OF H2O MASERS IN THE MASSIVE STAR-FORMING REGION NGC 6334I(NORTH) WITH VERA

    Article • The Astrophysical Journal, March 2014, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  83. STAR FORMATION IN THE MOLECULAR CLOUD ASSOCIATED WITH THE MONKEY HEAD NEBULA: SEQUENTIAL OR SPONTANEOUS?

    Article • The Astrophysical Journal, December 2012, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  84. MULTIPOLAR PLANETARY NEBULAE: NOT AS GEOMETRICALLY DIVERSIFIED AS THOUGHT

    Article • The Astrophysical Journal, November 2012, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  85. Star Formation in the Molecular Cloud Associated with the Monkey Head Nebula: Sequential or Spontaneous?

    Article • Proceedings of the International Astronomical Union, August 2012, Cambridge University Press

    Prof. James Okwe Chibueze

  86. VLBI Observations and NH3 Mapping of the Star-forming Region NGC2264

    Article • Proceedings of the International Astronomical Union, August 2012, Cambridge University Press

    Prof. James Okwe Chibueze

  87. A HIGHLY COLLIMATED WATER MASER BIPOLAR OUTFLOW IN THE CEPHEUS A HW3d MASSIVE YOUNG STELLAR OBJECT

    Article • The Astrophysical Journal, March 2012, Institute of Physics Publishing

    Prof. James Okwe Chibueze

  88. A Highly-collimated Water Maser Bipolar Outflow in the Cepheus A HW3d Massive Protostellar Object

    Article • Proceedings of the International Astronomical Union, January 2012, Cambridge University Press

    Prof. James Okwe Chibueze