This map shows the geographic impact of W. Hackenberg'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 W. Hackenberg with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites W. Hackenberg more than expected).
This network shows the impact of papers produced by W. Hackenberg. 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 W. Hackenberg. The network helps show where W. Hackenberg may publish in the future.
Co-authorship network of co-authors of W. Hackenberg
This figure shows the co-authorship network connecting the top 25 collaborators of W. Hackenberg.
A scholar is included among the top collaborators of W. Hackenberg 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 W. Hackenberg. W. Hackenberg is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Arsenault, R., P. Y. Madec, Elise Vernet, et al.. (2016). Adaptive Optics Facility Status Report: When First Light Is Produced Rather Than Captured. Msngr. 164. 2–7.2 indexed citations
4.
Lewis, S.A.E., Domenico Bonaccini Calia, Bernard Buzzoni, et al.. (2014). Laser Guide Star Facility Upgrade. The Messenger. 155. 6–11.2 indexed citations
5.
Calia, Domenico Bonaccini, et al.. (2011). ELT LGS-AO: Optimizing the LGS return flux. 39.4 indexed citations
Bertram, Thomas, A. Eckart, M. Krips, Johannes Staguhn, & W. Hackenberg. (2006). Molecular gas in the galaxy cluster Abell 262. Astronomy and Astrophysics. 448(1). 29–42.4 indexed citations
11.
Pennington, Deanna M., J. Dawson, Z. Liao, et al.. (2004). Compact fiber laser approach to 589 nm laser guide stars. Conference on Lasers and Electro-Optics. 2.2 indexed citations
12.
Calia, Domenico Bonaccini, W. Hackenberg, Marco Quattri, et al.. (2002). VLT Laser Guide Star Facility: from one to many LGS. European Southern Observatory Conference and Workshop Proceedings. 58. 391.2 indexed citations
13.
Calia, Domenico Bonaccini, W. Hackenberg, Marco Quattri, et al.. (2001). ESO VLT Laser Guide Star Facility. Msngr. 105. 9–18.8 indexed citations
14.
Calia, Domenico Bonaccini, W. Hackenberg, R. Davies, S. Rabien, & Thomas Ott. (2000). VLT Laser Guide Star Facility: first successful test of the baseline laser scheme.. The Messenger. 100. 27–29.1 indexed citations
15.
Davies, R., et al.. (1999). First Observational Results from ALFA with Natural and Laser Guide Stars. CERN Bulletin. 56. 153.1 indexed citations
16.
Calia, Domenico Bonaccini, et al.. (1999). Laser Guide Star Facility for the ESO VLT.. Msngr. 98. 8–14.1 indexed citations
17.
Rabien, S., R. Davies, W. Hackenberg, A. Eckart, & Thomas Ott. (1999). Analysis Tools and Beam Relay System for the Alfa-Laser. European Southern Observatory Conference and Workshop Proceedings. 56. 371.1 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.