Overall Rank
Rank in SubField 1
Publications
Citations
Main Field
Physics & Astronomy
SubField 1
Astronomy & Astrophysics
SubField 2
General Physics
Rank in SubField 1: 1348 out of 55063 Researchers
Data For The Year: 2025
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 99823 | 103771 |
| Total Cites | 10307 | 12414 |
| H-index | 45 | 50 |
| Hm-index | 19 | 20 |
| Number of Single Authored Papers | 18 | 18 |
| Total Cites to Single Authored Papers | 32 | 33 |
| Number of Single+First Authored Papers | 39 | 39 |
| Total Cites to Single+First Authored Papers | 1184 | 1251 |
| Number of Single+First+Last Authored Papers | 76 | 76 |
| Total Cites to Single+First+Last Authored Papers | 4673 | 4941 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 8051 | 9462 |
| Ratio of Total Citations to Distinct Citing Papers | 1.28 | 1.31 |
| Self-Citation Percentage |
16.97%
|
|
If you find an error in your data, please contact us with your profile link: Contact Us
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field
Physics & Astronomy
SubField 1
Astronomy & Astrophysics
SubField 2
General Physics
Rank in SubField 1: 1316 out of 52115 Researchers
Data For The Year: 2024
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 98358 | 103618 |
| Total Cites | 9779 | 11798 |
| H-index | 44 | 49 |
| Hm-index | 19 | 19 |
| Number of Single Authored Papers | 17 | 17 |
| Total Cites to Single Authored Papers | 28 | 29 |
| Number of Single+First Authored Papers | 38 | 38 |
| Total Cites to Single+First Authored Papers | 1100 | 1166 |
| Number of Single+First+Last Authored Papers | 75 | 75 |
| Total Cites to Single+First+Last Authored Papers | 4448 | 4713 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 7616 | 8958 |
| Ratio of Total Citations to Distinct Citing Papers | 1.28 | 1.32 |
| Self-Citation Percentage |
17.11%
|
|
If you find an error in your data, please contact us with your profile link: Contact Us
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field
Physics & Astronomy
SubField 1
Astronomy & Astrophysics
SubField 2
General Physics
Rank in SubField 1: 1262 out of 49433 Researchers
Data For The Year: 2023
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 93361 | 98451 |
| Total Cites | 9324 | 11261 |
| H-index | 43 | 48 |
| Hm-index | 19 | 19 |
| Number of Single Authored Papers | 17 | 17 |
| Total Cites to Single Authored Papers | 28 | 29 |
| Number of Single+First Authored Papers | 38 | 38 |
| Total Cites to Single+First Authored Papers | 1044 | 1110 |
| Number of Single+First+Last Authored Papers | 75 | 75 |
| Total Cites to Single+First+Last Authored Papers | 4257 | 4521 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 7230 | 8503 |
| Ratio of Total Citations to Distinct Citing Papers | 1.29 | 1.32 |
| Self-Citation Percentage |
17.20%
|
|
If you find an error in your data, please contact us with your profile link: Contact Us
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field
Physics & Astronomy
SubField 1
Astronomy & Astrophysics
SubField 2
General Physics
Rank in SubField 1: 1166 out of 47944 Researchers
Data For The Year: 2022
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 86946 | 92093 |
| Total Cites | 8810 | 10646 |
| H-index | 43 | 48 |
| Hm-index | 19 | 19 |
| Number of Single Authored Papers | 17 | 17 |
| Total Cites to Single Authored Papers | 26 | 27 |
| Number of Single+First Authored Papers | 38 | 38 |
| Total Cites to Single+First Authored Papers | 987 | 1053 |
| Number of Single+First+Last Authored Papers | 75 | 75 |
| Total Cites to Single+First+Last Authored Papers | 4049 | 4302 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 6817 | 8002 |
| Ratio of Total Citations to Distinct Citing Papers | 1.29 | 1.33 |
| Self-Citation Percentage |
17.25%
|
|
If you find an error in your data, please contact us with your profile link: Contact Us
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field
Physics & Astronomy
SubField 1
Astronomy & Astrophysics
SubField 2
General Physics
Rank in SubField 1: 1109 out of 45688 Researchers
Data For The Year: 2021
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 83266 | 89495 |
| Total Cites | 8521 | 10315 |
| H-index | 43 | 47 |
| Hm-index | 19 | 19 |
| Number of Single Authored Papers | 17 | 17 |
| Total Cites to Single Authored Papers | 26 | 27 |
| Number of Single+First Authored Papers | 38 | 38 |
| Total Cites to Single+First Authored Papers | 946 | 1010 |
| Number of Single+First+Last Authored Papers | 75 | 75 |
| Total Cites to Single+First+Last Authored Papers | 3918 | 4169 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 6588 | 7739 |
| Ratio of Total Citations to Distinct Citing Papers | 1.29 | 1.33 |
| Self-Citation Percentage |
17.39%
|
|
If you find an error in your data, please contact us with your profile link: Contact Us
Helfand, David J.
Columbia University in the City of New York,
(us)
2020 Rank: 79713
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field
Physics & Astronomy
SubField 1
Astronomy & Astrophysics
SubField 2
General Physics
Rank in SubField 1: 1072 out of 42624 Researchers
Data For The Year: 2020
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 79713 | 85547 |
| Total Cites | 7803 | 9463 |
| H-index | 41 | 44 |
| Hm-index | 19 | 19 |
| Number of Single Authored Papers | 17 | 17 |
| Total Cites to Single Authored Papers | 26 | 27 |
| Number of Single+First Authored Papers | 38 | 38 |
| Total Cites to Single+First Authored Papers | 862 | 924 |
| Number of Single+First+Last Authored Papers | 75 | 75 |
| Total Cites to Single+First+Last Authored Papers | 3626 | 3872 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 6005 | 7052 |
| Ratio of Total Citations to Distinct Citing Papers | 1.30 | 1.34 |
| Self-Citation Percentage |
17.54%
|
|
If you find an error in your data, please contact us with your profile link: Contact Us
Related Profiles
Featured Profiles
Partner with Us
📢 Reach a targeted audience of science enthusiasts and professionals through our platform. Contact our marketing team:
business@topscinet.comcc: top2percentscientist@gmail.com
Get a custom proposal tailored to your banner ad goals.
Partner with Us
📢 Partner with us and reach a targeted audience of science enthusiasts and professionals through our platform. Your company/institute’s banner could be here.