Scholarly Index
D. J. Helfand
Columbia University; 15,681 total citations; 487 total publications; best world rank #55
Columbia University
15,681Total citations
487Total publications
58H-index
Published ranking records
| Field | Window | World rank | National rank | Impact score |
|---|---|---|---|---|
| Astronomical Observations and Instrumentation | Lifetime | 55 | US 40 | 99.24 |
| Astrophysics and Cosmic Phenomena | Lifetime | 381 | US 133 | 97.62 |
| Gamma-ray bursts and supernovae | Lifetime | 315 | US 142 | 98.21 |
| Astrophysical Phenomena and Observations | Lifetime | 272 | US 129 | 98.10 |
| Geophysics and Gravity Measurements | Lifetime | 762 | US 293 | 96.12 |
| Radio Astronomy Observations and Technology | Lifetime | 321 | US 108 | 96.81 |
| Pulsars and Gravitational Waves Research | Lifetime | 494 | US 195 | 96.61 |
| Geophysics and Sensor Technology | Lifetime | 776 | US 279 | 91.08 |