This map shows the geographic impact of N. Bartel'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 N. Bartel with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites N. Bartel more than expected).
This network shows the impact of papers produced by N. Bartel. 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 N. Bartel. The network helps show where N. Bartel may publish in the future.
Co-authorship network of co-authors of N. Bartel
This figure shows the co-authorship network connecting the top 25 collaborators of N. Bartel.
A scholar is included among the top collaborators of N. Bartel 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 N. Bartel. N. Bartel is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Bietenholz, M. F., R. Margutti, D. L. Coppejans, et al.. (2019). AT 2018cow VLBI: no long-lived relativistic outflow. Monthly Notices of the Royal Astronomical Society. 491(4). 4735–4741.18 indexed citations
6.
Bartel, N., et al.. (2012). VLBI for Gravity Probe B. I. Overview. Digital Access to Scholarship at Harvard (DASH) (Harvard University).4 indexed citations
7.
Bartel, N., et al.. (2005). The Quasar 3C454.3: An Extragalactic Reference Source for the Gravity Probe B Mission. Journal of the Royal Astronomical Society of Canada. 99(4). 130.
Bartel, N., M. F. Bietenholz, M. P. Rupen, et al.. (1999). Expansion of Supernova 1993J. 194.1 indexed citations
10.
Lebach, D. E., et al.. (1996). The Guide Star for the Gyroscope Relativity Mission.. 1553.1 indexed citations
11.
Bartel, N., et al.. (1996). VLBI of the Candidate Guide Star HR 5110 for NASA's Gravity Probe-B Mission.. Journal of the Royal Astronomical Society of Canada. 90. 318.
Marscher, Alan P., J. J. Broderick, N. Bartel, L. Padrielli, & J. D. Romney. (1985). 18 cm VLBI Observations of the Quasar NRAO 140 During and After a Low-Frequency Outburst. Bulletin of the American Astronomical Society. 17. 608.
Marcaide, J. M., I. I. Shapiro, B. E. Corey, et al.. (1982). A Close Look at a Close Pair of QSOs : VLBI Observations of 1038+528 A,B. Bulletin of the American Astronomical Society. 14. 648–648.1 indexed citations
19.
Morris, David J., D. A. Graham, W. Sieber, N. Bartel, & P. Thomasson. (1981). Observations of the polarization of average pulsar profiles at high frequency.. Astronomy & Astrophysics Supplement Series. 46. 421–472.4 indexed citations
20.
Bartel, N. & W. Sieber. (1978). Simultaneous single pulse observations of radio pulsars at two widely spaced frequencies.. A&A. 70. 307–310.
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.