Education and Positions

• EHT Project Scientist (2019~present)
• Chief Scientist for Hilo Operations (2014~present)
• Asst Professor, UC Berkeley (2006~2013)

Research Interests

Transient radio sources, black holes, radio cosmology, VLBI, radio instrumentation and techniques.

Recent Journal Papers

Complete List of Publications

My Publications from ADS

1. Law CJ; Omand CMB; Kashiyama K; ...; Bower GC; et al., "A Search for Late-time Radio Emission and Fast Radio Bursts from Superluminous Supernovae" , The Astrophysical Journal: 886(1), 24, 2019-11 [SCI] (Fulltext)
2. Haggard D; Nynka M; Mon B; ...; Bower GC; et al., "Chandra Spectral and Timing Analysis of Sgr A*'s Brightest X-Ray Flares" , The Astrophysical Journal: 886(2), 96, 2019-11 [SCI] (Fulltext)
3. Bower GC; Dexter J; Asada K; ..., Ho P; Inoue M; ...; Matsushita S; ...; Nakamura M; ...; Rao R; et al., "ALMA Observations of the Terahertz Spectrum of Sagittarius A*" , The Astrophysical Journal: 881(1), L2, 2019-08 [SCI] (Fulltext)
4. Porth O; Chatterjee K; Narayan R; ...;Asada K; ...; Bower GC; ...; Chen M-T;...; Ho P; ...; Huang C-WL; ...; Inoue M; ...; Koay JY; Koch PM; Koyama S; ...Kuo CY; ...; Matsushita S; ...; et al., "The Event Horizon General Relativistic Magnetohydrodynamic Code Comparison Project" , The Astrophysical Journal Supplement Series: 243(2), 26, 2019-08 [SCI] (Fulltext)
5. Hessels JWT; Spitler LG; Seymour AD; ...; Bower GC, et al., "FRB 121102 Bursts Show Complex Time–Frequency Structure" , The Astrophysical Journal: 876(2), L23, 2019-05 [SCI] (Fulltext)
6. Event Horizon Telescope Collaboration; Akiyama K; Alberdi A; ...; Asada K; ...; Bower GC; Chen MT; ...; Ho PTP; ...; Huang C-W L; ...; Inoue M; ...; Koay JY; Koch PM; Koyama S; ...; Kuo C-Y; ...; Lo W-P; ...; Matsushita S; ...; Nakamura M; ...; Pen U-L; ...; Pu H-Y; ...; Rao R; ...; Algaba J-C; ...; Chang C-C; Chang S-H; Chen C-C; Chilson R; ...; Han C-C; ...; Hasegawa Y; ...; Impellizzeri CMV; ...; Hirota A; ...; Huang Y-D; ...; Jiang H; ...; Kimura K; ...; Li C-T; Lin LC-C; ...; Liu K-Y; ...; Martin-Cocher PL; ...; Meyer-Zhao Z; ...; Nishioka H; ...; Nystrom G; ...; Oshiro P; ...; Pradel N; ...; Raffin PA; ...; Shaw P; ...; Snow W; ...; Srinivasan R; ...; Wei T-S; Yu C-Y; et al., "First M87 Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole" , ASTROPHYSICAL JOURNAL LETTERS: 875(1), L1, 2019-04 [SCI] (Fulltext)
7. Collaboration EHT; Akiyama K; Alberdi A; ...; Asada K; ...; Bower GC; ...; Chen MT; ...; Ho PTP; ...; Huang C-W L; ...; Inoue M; ...; Koay JY; Koch PM; Koyama S; ...; Kuo C-Y; ...; Lo W-P; ...; Matsushita S; ...; Nakamura M; ...; Pen U-L; ...; Pu H-Y; ...; Rao R; ...; Algaba J-C; ...; Chang C-C; Chang S-H; Chen C-C; Chilson R; ...; Han C-C; ...; Huang Y-D;...; Jiang H; ...; Li C-T; Lin LC-C; ...; Liu K-Y; ...; Martin-Cocher PL; ...; Meyer-Zhao Z; ...; Nishioka H; ...; Nystrom G; ...; Oshiro P; ...; Pradel N; ...; Raffin PA; ...; Shaw P; ...; Snow W; ...; Srinivasan R; ...; Wei T-S; Yu C-Y; et al., "First M87 Event Horizon Telescope Results. II. Array and Instrumentation" , ASTROPHYSICAL JOURNAL LETTERS: 875(1), L2, 2019-04 ,[SCI] (Fulltext)
8. Collaboration EHT; Akiyama K; Alberdi A; ...; Asada K; ...; Bower GC; ...; Chen MT; ...; Ho PTP; ...; Huang C-W L; ...; Inoue M; ...; Koay JY; Koch PM; Koyama S; ...; Lo W-P; ...; Matsushita S; ...; Nakamura M; ...; Rao R; ...; Meyer-Zhao Z; ...; Nishioka H; ...; Pradel N; et al., "First M87 Event Horizon Telescope Results. III. Data Processing and Calibration" , ASTROPHYSICAL JOURNAL LETTERS: 875(1), L3, 2019-04 ,[SCI] (Fulltext)
9. Collaboration EHT; Akiyama K; Alberdi A; Asada K; ...; Bower GC; ...; Chen MT; ...; Ho PTP; ...; Huang C-W L; ...; Inoue M; ...; Koay JY; Koch PM; Koyama S; ...; Lo W-P; ...; Matsushita S; ...; Nakamura M; ...; Rao R; ...; Meyer-Zhao Z; ...; Nishioka H; ...; Pradel N; et al., "First M87 Event Horizon Telescope Results. IV. Imaging the Central Supermassive Black Hole" , ASTROPHYSICAL JOURNAL LETTERS: 875(1), L4, 2019-04 ,[SCI] (Fulltext)
10. Collaboration EHT; Akiyama K; Alberdi A; ...; Asada K; ...; Bower GC; ...; Chen MT; ...; Ho PTP; ...; Huang C-W L; ...; Inoue M; ...; Koay JY; Koch PM; Koyama S; ...; Lo W-P; ...; Matsushita S; ...; Nakamura M; ...; Rao R; ...; Meyer-Zhao Z; ...; Nishioka H; ...; Pradel N; al., "First M87 Event Horizon Telescope Results. V. Physical Origin of the Asymmetric Ring" , Astrophysical Journal: 875(1), L5, 2019-04 ,[SCI] (Fulltext)
11. Collaboration EHT; Akiyama K; Alberdi A; ...; Asada K; ...; Bower GC;...; Chen MT; ...; Ho PTP; ...; Huang C-W L; ...; Inoue M; ...; Koay JY; Koch PM; Koyama S; ...; Lo W-P; ...; Matsushita S; ...; Nakamura M; ...; Rao R; ...; Meyer-Zhao Z; ...; Nishioka H; ...; Pradel N; et al., "First M87 Event Horizon Telescope Results. VI. The Shadow and Mass of the Central Black Hole" , ASTROPHYSICAL JOURNAL LETTERS: 875(1), L6, 2019-04 ,[SCI] (Fulltext)
12. Wharton RS; Chatterjee S; Cordes JM; Bower GC; et al., "VLA Observations of Single Pulses from the Galactic Center Magnetar" , The Astrophysical Journal: 875(2), 143, 2019-04 [SCI] (Fulltext)
13. Brinkerink CD; Muller C; Falcke HD; ...; Bower GC; et al., "Micro-arcsecond structure of Sagittarius A∗ revealed by high-sensitivity 86 GHz VLBI observations" , Astronomy & Astrophysics: 621, A119, 2019-01 [SCI] (Fulltext)
14. Mairs S; Lalchand B; Bower GC; et al., "The JCMT Transient Survey: An Extraordinary Submillimeter Flare in the T Tauri Binary System JW 566" , The Astrophysical Journal: 871(1), 72, 2019-01 [SCI] (Fulltext)
15. Issaoun S; Johnson MD; Blackburn L; ...; Bower GC; et al., "The Size, Shape, and Scattering of Sagittarius A* at 86 GHz: First VLBI with ALMA" , The Astrophysical Journal: 871(1), 30, 2019-01 [SCI] (Fulltext)
16. Bower GC; Broderick A; Dexter J; ...; Rao R, "ALMA Polarimetry of Sgr A*: Probing the Accretion Flow from the Event Horizon to the Bondi Radius" , The Astrophysical Journal: 868(2), 101, 2018-12 [SCI] (Fulltext)
17. Johnson MD.; Narayan R; Psaltis D; ...; Bower GC; et al., "The Scattering and Intrinsic Structure of Sagittarius A* at Radio Wavelengths" , The Astrophysical Journal: 865(2), 104, 2018-10 [SCI] (Fulltext)
18. Spitler LG; Herrmann W; Bower GC; et al., "Detection of Bursts from FRB 121102 with the Effelsberg 100 m Radio Telescope at 5 GHz and the Role of Scintillation" , The Astrophysical Journal: 863(2), 150, 2018-08 [SCI] (Fulltext)
19. Gajjar V; Siemion APV; Price DC; ...; Bower GC; et al., "Highest Frequency Detection of FRB 121102 at 4–8 GHz Using the Breakthrough Listen Digital Backend at the Green Bank Telescope" , The Astrophysical Journal: 863(1), 2, 2018-08 [SCI] (Fulltext)
20. Bower GC; Rao R; Krips M; et al., "A Search for Molecular Gas in the Host Galaxy of FRB 121102" , The Astronomical Journal: 155(6), 227, 2018-06 [SCI] (Fulltext)
21. Law CJ; Bower GC; Burke-Spolaor S; et al., "Realfast: Real-time, Commensal Fast Transient Surveys with the Very Large Array" , The Astrophysical Journal Supplement Series: 236(1), 8, 2018-05 [SCI] (Fulltext)
22. Johnstone D; Herczeg GJ; Mairs S; Hatchell J; Bower GC; ...; Morata O; ...; Scicluna P; ...; The JCMT Transient Team, "The JCMT Transient Survey: Stochastic and Secular Variability of Protostars and Disks In the Submillimeter Region Observed over 18 Months" , The Astrophysical Journal: 854(1), 31, 2018-02 [SCI] (Fulltext)
23. Michilli D; Seymour A; Hessels JWT; ...; Bower GC; et al., "An extreme magneto-ionic environment associated with the fast radio burst source FRB 121102" , Nature: 553(7687), 182-185, 2018-01 [SCI] (Fulltext)
24. Desvignes G; Eatough RP; Pen UL; ...; Bower GC; et al., "Large Magneto-ionic Variations toward the Galactic Center Magnetar, PSR J1745-2900" , The Astrophysical Journal: 852(1), L12, 2018-01 [SCI] (Fulltext)
25. Pokorny M; Law CJ; Bower GC; et al., "Vys: A Protocol for Commensal Fast Transient Searches and Data Processing at the Very Large Array" , Journal of Astronomical Instrumentation: 07(02n03), 1850005, 2018 (Fulltext)
26. Law CJ; Abruzzo MW; Bassa CG; Bower GC; et al., "A Multi-telescope Campaign on FRB 121102: Implications for the FRB Population" , ASTROPHYSICAL JOURNAL: 850(1), 76, 2017-11 [SCI] (Fulltext)
27. Herczeg GJ; Johnstone D; Mairs S; ...; Bower GC; Chen HRV; ...; Rao R; ...; Takahashi S; Morata O; ...; Kuan YJ; ...; Lai SP; ...; Lee CF; ...; Lyo AR; ...; Scicluna P; ...; Takakuwa S; Tang YW; et al., "How Do Stars Gain Their Mass? A JCMT/SCUBA-2 Transient Survey of Protostars in Nearby Star-forming Regions" , ASTROPHYSICAL JOURNAL: 849(1), 43, 2017-11 [SCI] (Fulltext)
28. Dexter J; Deller A; Bower GC; et al., "Locating the intense interstellar scattering towards the inner Galaxy" , ASTROPHYSICAL JOURNAL: 471(3), 3563-3576, 2017-11 [SCI] (Fulltext)
29. Mairs S; Johnstone D; Kirk H; ...; Scicluna P; Bower GC; Chen HRVV; ...; Morata O; et al., "The JCMT Transient Survey: Identifying Submillimetre Continuum Variability over Several Year Timescales Using Archival JCMT Gould Belt Survey Observations" , ASTROPHYSICAL JOURNAL: 849(2), 107, 2017-11 [SCI] (Fulltext)
30. Scholz P; Bogdanov S; Hessels JWT; ...; Bower GC; et al., "Simultaneous X-Ray, Gamma-Ray, and Radio Observations of the Repeating Fast Radio Burst FRB 121102" , ASTROPHYSICAL JOURNAL: 846(1), 80, 2017-09 [SCI] (Fulltext)
31. Lawrence E; Vander Wiel S; Law C; ...; Bower GC, "The Nonhomogeneous Poisson Process for Fast Radio Burst Rates" , ASTRONOMICAL JOURNAL: 154(3), 117, 2017-09 [SCI] (Fulltext)
32. Capellupo DM; Haggard D; Choux N; Baganoff F; Bower GC; et al., "Simultaneous Monitoring of X-Ray and Radio Variability in Sagittarius A*" , ASTROPHYSICAL JOURNAL: 845(1), 35, 2017-08 [SCI] (Fulltext)
33. Bassa CG; Tendulkar SP; Adams EAK; ...; Bower GC; et al., "FRB 121102 Is Coincident with a Star-forming Region in Its Host Galaxy" , Astrophysical Journal Letters: 843(1), L8, 2017-07 [SCI] (Fulltext)
34. Mairs S; Lane J; Johnstone D; ...; Bower GC; ...; The JCMT Transient Team, "The JCMT Transient Survey: Data Reduction and Calibration Methods" , ASTROPHYSICAL JOURNAL: 843(1), 55, 2017-07 [SCI] (Fulltext)
35. Bower GC; Dexter J; Markoff S; Rao R; et al., "What Is the Hidden Depolarization Mechanism in Low-luminosity AGNs?" , Astrophysical Journal Letters: 843(2), L31, 2017-07 [SCI] (Fulltext)
36. Chatterjee S; Law CJ; Wharton RS; ...; Bower GC; et al., "A direct localization of a fast radio burst and its host" , NATURE: 541(7635), 58-61, 2017-01 [SCI] (Fulltext)
37. Tendulkar SP; Bassa CG; Cordes JM; Bower GC; et al., "The Host Galaxy and Redshift of the Repeating Fast Radio Burst FRB 121102" , ASTROPHYSICAL JOURNAL: 834(2), L7, 2017-01 [SCI] (Fulltext)
38. Marcote B; Paragi Z; Hessels JWT; ...; Bower GC; et al., "The Repeating Fast Radio Burst FRB 121102 as Seen on Milliarcsecond Angular Scales" , Astrophysical Journal Letters: 834(2), L8, 2017-01 [SCI] (Fulltext)
39. Chiti A; Chatterjee S; Wharton R; ...; Bower GC; et al., "Transient Events in Archival Very Large Array Observations of the Galactic Center" , ASTROPHYSICAL JOURNAL: 833(1), 11, 2016-12 [SCI] (Fulltext)
40. Keating GK; Marrone DP; Bower GC; et al., "COPSS II: The Molecular Gas Content of Ten Million Cubic Megaparsecs at Redshift z ∼ 3" , ASTROPHYSICAL JOURNAL: 830(1), 34, 2016-11 [SCI] (Fulltext)
41. Brinkerink CD; Mueller C; Falcke H; Bower GC; et al., "Asymmetric structure in Sgr A* at 3mm from closure phase measurements with VLBA, GBT and LMT" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 462(2), 1382-1392, 2016-10 [SCI] (Fulltext)
42. Bower GC; et al., "Variable Radio Emission from the Young Stellar Host of a Hot Jupiter" , ASTROPHYSICAL JOURNAL: 830(2), 107, 2016-10 [SCI] (Fulltext)
43. Ponti G; Jin C; De Marco B; ...; Bower GC; et al., "Swift J174540.7-290015: a new accreting binary in the Galactic Center" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 461(3), 2688-2701, 2016-09 [SCI] (Fulltext)
44. Fish VL; Johnson MD; Doeleman SS; ...; Algaba JC; Asada K; ...; Bower GC; ...; Ho PTP; ... ; Inoue M; et al., "Persistent Asymmetric Structure of Sagittarius A* on Event Horizon Scales" , ASTROPHYSICAL JOURNAL: 820(2), 90, 2016-04 [SCI] (Fulltext)
45. Bower GC, "The screams of a star being ripped apart" , SCIENCE: 351(6268), 30-31, 2016-01 [SCI] (Fulltext)
46. Keating GK; Bower GC; Marrone DP; ...; Chang T-C; et al., "First Results from COPSS: The CO Power Spectrum Survey" , ASTROPHYSICAL JOURNAL: 814(2), 140, 2015-12 [SCI] (Fulltext)
47. Johnson MD; Fish VL; Doeleman SS; …; Asada K; …; Bower GC; …; Ho PTP; …; Inoue M; et al., "Resolved Magnetic-Field Structure and Variability Near the Event Horizon of Sagittarius" , SCIENCE: 350(6265), 1242-1245, 2015-12 [SCI] (Fulltext)
48. Bower GC; Dexter J; Markoff S; Gurwell MA; Rao R; McHardy I, "A Black Hole Mass-Variability Time Scale Correlation at Submillimeter Wavelengths" , Astrophysical Journal Letters: 811(1), L6, 2015-09 [SCI] (Fulltext)
49. Akiyama K; Lu R-S; Fish VL; ...; Algaba JC; Asada K; ...; Bower GC; ... ; Ho PTP; Inoue M; ...; Nakamura M; ...; Pradel N; et al., "230 GHz VLBI Observations of M87: Event-horizon-scale Structure during an Enhanced Very-high-energy γ-Ray State in 2012" , ASTROPHYSICAL JOURNAL: 807(2), 150, 2015-07 [SCI] (Fulltext)
50. Law CJ.; Bower GC; Burke-Spolaor S; et al., "A Millisecond Interferometric Search for Fast Radio Bursts with the Very Large Array" , ASTROPHYSICAL JOURNAL: 807(1), 16, 2015-07 [SCI] (Fulltext)
51. Pasham DR; Cenko SB; Levan AJ; Bower GC; et al., "A Multiwavelength Study of the Relativistic Tidal Disruption Candidate Swift J2058.4+0516 at Late Times" , ASTROPHYSICAL JOURNAL: 805(1), 68, 2015-05 [SCI] (Fulltext)
52. Brinkerink CD; Falcke H; Law CJ; ...; Bower GC; et al., "ALMA and VLA measurements of frequency-dependent time lags in Sagittarius A*: evidence for a relativistic outflow" , ASTRONOMY & ASTROPHYSICS: 576, A41, 2015-05 [SCI] (Fulltext)
53. Bower GC; Markoff S; Dexter J; et al., "Radio and Millimeter Monitoring of Sgr A*: Spectrum, Variability, and Constraints on the G2 Encounter" , ASTROPHYSICAL JOURNAL: 802(1), 69, 2015-03 [SCI] (Fulltext)
54. McBride J; Robishaw T; Heiles C; Bower GC; Sarma AP, "Parsec-scale magnetic fields in Arp 220" , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY: 447(2), 1107-1115, 2015-02 [SCI],[Others] (Fulltext)
55. Bower GC; Deller A; Demorest P; et al. , "The Proper Motion of the Galactic Center Pulsar Relative to Sagittarius A*" , ASTROPHYSICAL JOURNAL: 798(2), 120, 2015-01 [SCI] (Fulltext)