This map shows the geographic impact of T. Hewagama's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by T. Hewagama with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites T. Hewagama more than expected).
This network shows the impact of papers produced by T. Hewagama. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by T. Hewagama. The network helps show where T. Hewagama may publish in the future.
Co-authorship network of co-authors of T. Hewagama
This figure shows the co-authorship network connecting the top 25 collaborators of T. Hewagama.
A scholar is included among the top collaborators of T. Hewagama based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with T. Hewagama. T. Hewagama is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Barbee, Brent W., L. F. Lim, Shahid Aslam, et al.. (2020). Reconnaissance of Apophis (RA): A Mission Concept for Exploring the Potentially Hazardous Asteroid Apophis During Its 2029 Earth Encounter. 2242. 2010.1 indexed citations
5.
Aslam, Shahid, R. K. Achterberg, V. Cottini, et al.. (2018). Net Flux Radiometer for the Ice Giants. Lunar and Planetary Science Conference. 2675.1 indexed citations
6.
Villanueva, Gerónimo, Avi M. Mandell, Silvia Protopapa, et al.. (2017). Planetary Spectrum Generator (PSG): An Online Tool to Synthesize Spectra of Comets, Small Bodies, and (Exo)Planets. LPICo. 1989. 8006.2 indexed citations
Fast, K. E., et al.. (2010). High-Resolution Spectroscopy of Stratospheric Ethane Following the Jupiter Impact of 2009. EGU General Assembly Conference Abstracts. 12. 14959.1 indexed citations
9.
Villanueva, Gerónimo, et al.. (2008). Mapping the D/H of water on Mars using high-resolution spectroscopy. LPICo. 1447. 9101.8 indexed citations
10.
Bjoraker, G. L., N. J. Chanover, D. A. Glenar, & T. Hewagama. (2007). Saturn's Deep Cloud Structure Derived From 5-Micron Spectra. AGUFM. 2007.1 indexed citations
11.
Mumma, M. J., G. L. Villanueva, R. E. Novak, et al.. (2007). Absolute Measurements Of Methane On Mars: The Current Status.. LPICo. 1447. 9099.2 indexed citations
12.
Makrides, Constantinos, Gerónimo Villanueva, R. E. Novak, et al.. (2006). Observations of Deuterated Water on Mars Using NIRSPEC at Keck II; Is the D/H Ratio Related to Surface Pressure and Temperature?. DPS.1 indexed citations
13.
Mumma, M. J., R. E. Novak, T. Hewagama, et al.. (2005). Absolute Abundance of Methane and Water on Mars: Spatial Maps. 37.5 indexed citations
14.
Sonnabend, G., T. A. Livengood, D. Bühl, et al.. (2005). A New Search for OCS in the Middle Atmosphere of Venus. DPS.2 indexed citations
15.
Livengood, T. A., T. Kostiuk, G. Sonnabend, et al.. (2004). Meridional Mapping of Ethane (C 2 H 6 ) Infrared Emission from Saturn's Southern (Summer) Stratosphere. 36.1 indexed citations
16.
Bjoraker, G. L., T. Hewagama, & Glenn S. Orton. (2002). Evidence for water clouds on Jupiter from 5-micron spectra. 34.1 indexed citations
17.
Livengood, T. A., H. B. Hammel, K. E. Fast, et al.. (2002). A New Infrared Heterodyne Search for Ethane in the Stratosphere of Uranus. DPS. 34.1 indexed citations
18.
Schmülling, F., et al.. (1999). A new infrared heterodyne instrument for measurements of planetary wind and composition.. Bulletin of the American Astronomical Society. 31(4). 1082.7 indexed citations
19.
Kostiuk, T., T. A. Livengood, K. E. Fast, et al.. (1999). Jovian Northern Ethane Aurora and the Solar Cycle. DPS. 32.1 indexed citations
20.
Hewagama, T., J. Goldstein, Fred Espenak, et al.. (1998). Spectral Line Analysis for Planetary Atmospheric Dynamics Retrieval. Bulletin of the American Astronomical Society. 30. 1093.8 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.