S. Callaghan

2.0k total citations · 2 hit papers
39 papers, 1.4k citations indexed

About

S. Callaghan is a scholar working on Computer Networks and Communications, Information Systems and Management and Artificial Intelligence. According to data from OpenAlex, S. Callaghan has authored 39 papers receiving a total of 1.4k indexed citations (citations by other indexed papers that have themselves been cited), including 17 papers in Computer Networks and Communications, 16 papers in Information Systems and Management and 12 papers in Artificial Intelligence. Recurrent topics in S. Callaghan's work include Distributed and Parallel Computing Systems (17 papers), Scientific Computing and Data Management (16 papers) and earthquake and tectonic studies (10 papers). S. Callaghan is often cited by papers focused on Distributed and Parallel Computing Systems (17 papers), Scientific Computing and Data Management (16 papers) and earthquake and tectonic studies (10 papers). S. Callaghan collaborates with scholars based in United States, United Kingdom and Germany. S. Callaghan's co-authors include P. J. Maechling, Ewa Deelman, Karan Vahi, Gideon Juve, T. H. Jordan, Rafael Ferreira da Silva, Mats Rynge, Kent Wenger, Weiwei Chen and Miron Livny and has published in prestigious journals such as SHILAP Revista de lepidopterología, Geophysical Journal International and Bulletin of the Seismological Society of America.

In The Last Decade

S. Callaghan

37 papers receiving 1.3k citations

Hit Papers

Pegasus, a workflow manag... 2010 2026 2015 2020 2014 2010 100 200 300 400 500
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Pegasus, a workflow management system for science automation
    2014 517 citations Ewa Deelman, Karan Vahi et al. Future Generation Computer Systems profile →
  2. CyberShake: A Physics-Based Seismic Hazard Model for Southern California
    2010 357 citations Robert Graves, T. H. Jordan et al. profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
S. Callaghan 710 609 490 426 359 39 1.4k
Tonglin Li 425 0.6× 58 0.1× 305 0.6× 250 0.6× 43 0.1× 79 889
Inder Monga 700 1.0× 50 0.1× 323 0.7× 277 0.7× 41 0.1× 54 1.4k
Matthew D. Jones 266 0.4× 90 0.1× 177 0.4× 23 0.1× 8 0.0× 49 511
Julian Bunn 228 0.3× 28 0.0× 27 0.1× 309 0.7× 123 0.3× 45 720
Iván Rodero 852 1.2× 186 0.3× 689 1.4× 26 0.1× 2 0.0× 84 1.1k
Matthew Rocklin 158 0.2× 96 0.2× 84 0.2× 9 0.0× 5 0.0× 9 630
Xukai Zou 471 0.7× 9 0.0× 263 0.5× 50 0.1× 7 0.0× 95 1.1k
Maximilian Schleich 177 0.2× 58 0.1× 68 0.1× 2 0.0× 24 0.1× 17 546
Umesh Dayal 86 0.1× 10 0.0× 135 0.3× 18 0.0× 135 0.4× 27 475
Xiaoxia Liu 65 0.1× 7 0.0× 85 0.2× 58 0.1× 30 0.1× 73 612

Countries citing papers authored by S. Callaghan

Since Specialization
Citations

This map shows the geographic impact of S. Callaghan'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 S. Callaghan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites S. Callaghan more than expected).

Fields of papers citing papers by S. Callaghan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by S. Callaghan. 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 S. Callaghan. The network helps show where S. Callaghan may publish in the future.

Co-authorship network of co-authors of S. Callaghan

This figure shows the co-authorship network connecting the top 25 collaborators of S. Callaghan. A scholar is included among the top collaborators of S. Callaghan 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 S. Callaghan. S. Callaghan is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Callaghan, S., et al.. (2025). Fifteen Years of International HPC Summer School. 1–8.
2.
Callaghan, S., et al.. (2024). Earthquake Fault Rupture Modeling and Ground-Motion Simulations for the Southwest Iceland Transform Zone Using CyberShake. Bulletin of the Seismological Society of America. 115(1). 69–85. 3 indexed citations
3.
Callaghan, S., et al.. (2024). Developing a Successful HPC Mentoring Program at the IHPCSS. OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information). 1–9. 2 indexed citations
4.
Callaghan, S., et al.. (2024). IHPCSS: Building Community for Short Training Schools. 1–4. 1 indexed citations
5.
Callaghan, S., et al.. (2024). A machine learning estimator trained on synthetic data for real-time earthquake ground-shaking predictions in Southern California. Communications Earth & Environment. 5(1). 5 indexed citations
6.
Callaghan, S., P. J. Maechling, Fábio Silva, et al.. (2024). Using open-science workflow tools to produce SCEC CyberShake physics-based probabilistic seismic hazard models. SHILAP Revista de lepidopterología. 2. 6 indexed citations
7.
Meng, Xiaofeng, Christine Goulet, Kevin R. Milner, Robert Graves, & S. Callaghan. (2023). Comparison of Nonergodic Ground-Motion Components from CyberShake and NGA-West2 Datasets in California. Bulletin of the Seismological Society of America. 113(3). 1152–1175. 7 indexed citations
8.
Milner, Kevin R., S. Callaghan, P. J. Maechling, et al.. (2018). A SCEC CyberShake Physics-Based Probabilistic Seismic Hazard Model for Northern California. AGU Fall Meeting Abstracts. 2018. 1 indexed citations
9.
Callaghan, S., P. J. Maechling, Christine Goulet, et al.. (2017). CyberShake Physics-Based PSHA in Central California. AGU Fall Meeting Abstracts. 2017. 1 indexed citations
10.
Callaghan, S., P. J. Maechling, Christine Goulet, et al.. (2016). Expanding CyberShake Physics-Based Seismic Hazard Calculations to Central California. AGUFM. 2016. 1 indexed citations
11.
Callaghan, S., et al.. (2015). Using CyberShake Workflows to Manage Big Seismic Hazard Data on Large-Scale Open-Science HPC Resources. 2015 AGU Fall Meeting. 2015. 1 indexed citations
12.
Goulet, Christine, Ferran Silva, P. J. Maechling, S. Callaghan, & T. H. Jordan. (2015). The SCEC Broadband Platform: Open-Source Software for Strong Ground Motion Simulation and Validation. AGU Fall Meeting Abstracts. 2015. 1 indexed citations
13.
Callaghan, S., et al.. (2014). Optimizing CyberShake Seismic Hazard Workflows for Large HPC Resources. 2014 AGU Fall Meeting. 2014. 1 indexed citations
14.
Deelman, Ewa, Karan Vahi, Gideon Juve, et al.. (2014). Pegasus, a workflow management system for science automation. Future Generation Computer Systems. 46. 17–35. 517 indexed citations breakdown →
15.
Jordán, Tibor, et al.. (2013). Using the Averaging-Based Factorization to Assess CyberShake Hazard Models. AGU Fall Meeting Abstracts. 2013. 3 indexed citations
16.
Cui, Y., et al.. (2013). Accelerating CyberShake Calculations on the XE6/XK7 Platform of Blue Waters. 8–17. 9 indexed citations
17.
Katz, Daniel S., S. Callaghan, Robert P. Harkness, et al.. (2010). Science on the TeraGrid. Computational Methods in Science and Technology. Special Issue(1). 81–97. 3 indexed citations
18.
Callaghan, S., P. J. Maechling, Robert Graves, et al.. (2010). Running On-Demand Strong Ground Motion Simulations with the Second-Generation Broadband Platform. AGU Fall Meeting Abstracts. 2010. 1 indexed citations
19.
Maechling, P. J., T. H. Jordan, M. Liukis, & S. Callaghan. (2009). Developing Performance Measures for the CISN Earthquake Early Warning Testing Center. AGU Fall Meeting Abstracts. 2009. 1 indexed citations
20.
Callaghan, S., Ewa Deelman, Dan Gunter, et al.. (2009). Scaling up workflow-based applications. Journal of Computer and System Sciences. 76(6). 428–446. 41 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.

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