Sigrid Close

2.0k total citations
99 papers, 1.7k citations indexed

About

Sigrid Close is a scholar working on Astronomy and Astrophysics, Aerospace Engineering and Geophysics. According to data from OpenAlex, Sigrid Close has authored 99 papers receiving a total of 1.7k indexed citations (citations by other indexed papers that have themselves been cited), including 81 papers in Astronomy and Astrophysics, 30 papers in Aerospace Engineering and 11 papers in Geophysics. Recurrent topics in Sigrid Close's work include Astro and Planetary Science (61 papers), Ionosphere and magnetosphere dynamics (55 papers) and Planetary Science and Exploration (50 papers). Sigrid Close is often cited by papers focused on Astro and Planetary Science (61 papers), Ionosphere and magnetosphere dynamics (55 papers) and Planetary Science and Exploration (50 papers). Sigrid Close collaborates with scholars based in United States, Germany and Canada. Sigrid Close's co-authors include M. M. Oppenheim, Stephen M. Hunt, Nicolas Lee, L. P. Dyrud, Ashish Goel, P. Colestock, Alex Fletcher, Peter Brown, Robert A. Marshall and M. C. Kelley and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, The Astrophysical Journal and Geophysical Research Letters.

In The Last Decade

Sigrid Close

97 papers receiving 1.6k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Sigrid Close United States	24	1.4k	374	210	149	136	99	1.7k
F. T. Djuth United States	29	1.4k 1.0×	363 1.0×	531 2.5×	140 0.9×	246 1.8×	77	1.9k
Shu T. Lai United States	21	1.2k 0.9×	272 0.7×	204 1.0×	90 0.6×	40 0.3×	91	1.6k
J. L. Ortiz Spain	30	2.4k 1.8×	213 0.6×	148 0.7×	52 0.3×	36 0.3×	208	2.7k
D. Boscher France	22	1.6k 1.1×	161 0.4×	545 2.6×	26 0.2×	130 1.0×	83	1.9k
A. R. Jacobson United States	16	727 0.5×	73 0.2×	154 0.7×	98 0.7×	170 1.3×	30	844
E. P. Szuszczewicz United States	21	1.1k 0.8×	345 0.9×	409 1.9×	21 0.1×	98 0.7×	75	1.2k
E.G. Mullen United States	24	1.3k 0.9×	241 0.6×	253 1.2×	68 0.5×	51 0.4×	64	1.6k
Chijie Xiao China	21	1.3k 1.0×	78 0.2×	205 1.0×	57 0.4×	374 2.8×	105	1.6k
A. Hilgers Netherlands	19	788 0.6×	128 0.3×	75 0.4×	35 0.2×	85 0.6×	53	1.0k
Bo Rao China	18	622 0.5×	257 0.7×	115 0.5×	57 0.4×	570 4.2×	116	978

Countries citing papers authored by Sigrid Close

Since Specialization

Citations

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

Fields of papers citing papers by Sigrid Close

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Sigrid Close

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

All Works

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20 of 20 papers shown

Lee, Nicolas, et al.. (2022). Plasma production and composition from hypervelocity impacts on solar cell cover glass. International Journal of Impact Engineering. 169. 104325–104325. 9 indexed citations

Lee, Nicolas, et al.. (2019). Dusty plasma effects in hypervelocity impacts on the ground and in space. AGU Fall Meeting Abstracts. 2019. 2 indexed citations

Banerjee, S., et al.. (2019). Electric Field Polarization of Electromagnetic Radiation from Micrometeoroid and Dust Impacts on Spacecraft. AGU Fall Meeting Abstracts. 2019. 2 indexed citations

Goel, Ashish, et al.. (2018). Hypervelocity impact flash and plasma on electrically biased spacecraft surfaces. International Journal of Impact Engineering. 121. 1–11. 29 indexed citations

Fletcher, Alex & Sigrid Close. (2017). Particle-in-cell simulations of an RF emission mechanism associated with hypervelocity impact plasmas. Physics of Plasmas. 24(5). 26 indexed citations

Close, Sigrid, et al.. (2013). ISOLDE: ISS-Based Study of LEO Debris and Meteoroid Electrical Effects. 723. 108. 1 indexed citations

Lee, Nicolas, Sigrid Close, & R. Srama. (2013). Composition of Plasmas Formed from Debris Impacts on Spacecraft Surfaces. 723. 104. 1 indexed citations

Yee, Jonathan & Sigrid Close. (2013). Plasma turbulence of nonspecular trail plasmas as measured by a high‐power large‐aperture radar. Journal of Geophysical Research Atmospheres. 118(24). 4 indexed citations

Kelley, M. C., et al.. (2012). Analysis of electromagnetic and electrostatic effects of particle impacts on spacecraft. Advances in Space Research. 49(6). 1029–1033. 19 indexed citations

10.

Lee, Jiyun, et al.. (2012). Results from Automated Ionospheric Data Analysis for Ground-Based Augmentation Systems (GBAS). 1451–1461. 6 indexed citations

11.

Close, Sigrid, M. C. Kelley, Alex Fletcher, Nicolas Lee, & P. Colestock. (2011). RF Signatures of Hypervelocity Impacts on Spacecraft. 4 indexed citations

12.

Yee, Jonathan & Sigrid Close. (2011). Diffusion of Plasmas from Ablating Meteoroids in the Ionosphere. 1 indexed citations

13.

Dymond, K. F., C. Coker, P. A. Bernhardt, et al.. (2008). The Combined Radio Interferometry and COSMIC Experiment in Tomography (CRICKET) Campaign. cosp. 37. 775. 2 indexed citations

14.

Watts, Christopher, K. F. Dymond, C. Coker, et al.. (2008). A Medium-Scale Traveling Ionospheric Disturbance Observed from the Ground and from Space. AGU Fall Meeting Abstracts. 2008.

15.

Dyrud, L. P., et al.. (2007). Plasma and electromagnetic wave simulations of meteors. Advances in Space Research. 42(1). 136–142. 23 indexed citations

16.

Dyrud, L. P., L. C. Ray, M. M. Oppenheim, Sigrid Close, & K. D. Denney. (2005). Modelling high-power large-aperture radar meteor trails. Journal of Atmospheric and Solar-Terrestrial Physics. 67(13). 1171–1177. 22 indexed citations

17.

Dyrud, L. P., K. D. Denney, Sigrid Close, et al.. (2004). Meteor velocity determination with plasma physics. Atmospheric chemistry and physics. 4(3). 817–824. 10 indexed citations

18.

Close, Sigrid, et al.. (2002). Meteoroid mass determination using head echoes detected at multiple frequencies. ESASP. 500. 153–156. 1 indexed citations

19.

Oppenheim, M. M., L. P. Dyrud, Sigrid Close, & Stephen M. Hunt. (2001). Theory and simulations of field-aligned irregularities in meteor trails. ESASP. 495. 361–366. 2 indexed citations

20.

Hunt, Stephen M., Sigrid Close, M. M. Oppenheim, & L. P. Dyrud. (2001). Two-frequency meteor observations using the Advanced Research Project Agency Long Range Tracking and Instrumentation Radar (ALTAIR). ESASP. 495. 451–455. 7 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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