M. J. Penn

574 total citations
35 papers, 419 citations indexed

About

M. J. Penn is a scholar working on Astronomy and Astrophysics, Electrical and Electronic Engineering and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, M. J. Penn has authored 35 papers receiving a total of 419 indexed citations (citations by other indexed papers that have themselves been cited), including 28 papers in Astronomy and Astrophysics, 6 papers in Electrical and Electronic Engineering and 5 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in M. J. Penn's work include Solar and Space Plasma Dynamics (25 papers), Ionosphere and magnetosphere dynamics (9 papers) and Stellar, planetary, and galactic studies (8 papers). M. J. Penn is often cited by papers focused on Solar and Space Plasma Dynamics (25 papers), Ionosphere and magnetosphere dynamics (9 papers) and Stellar, planetary, and galactic studies (8 papers). M. J. Penn collaborates with scholars based in United States, United Kingdom and Brazil. M. J. Penn's co-authors include J. R. Kuhn, W. Livingston, H. Lin, Alexei Pevtsov, K. Sankarasubramanian, H. P. Jones, Graham S. Kerr, H. S. Hudson, C. G. Giménez de Castro and Paulo J. A. Simões and has published in prestigious journals such as The Astrophysical Journal, Monthly Notices of the Royal Astronomical Society and Space Science Reviews.

In The Last Decade

M. J. Penn

35 papers receiving 407 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
M. J. Penn United States	12	382	81	68	45	25	35	419
P. N. Bernasconi United States	12	647 1.7×	72 0.9×	142 2.1×	25 0.6×	11 0.4×	45	706
Chunlan Jin China	14	337 0.9×	60 0.7×	94 1.4×	25 0.6×	20 0.8×	41	410
C. Quintero Noda Spain	11	319 0.8×	69 0.9×	62 0.9×	21 0.5×	21 0.8×	57	371
M. Sigwarth Germany	11	213 0.6×	39 0.5×	39 0.6×	53 1.2×	17 0.7×	30	251
Lucia Kleint Switzerland	16	585 1.5×	86 1.1×	87 1.3×	24 0.5×	15 0.6×	44	617
A. Lecinski United States	12	807 2.1×	139 1.7×	183 2.7×	44 1.0×	38 1.5×	25	855
M. Heiko Franz Germany	7	275 0.7×	65 0.8×	49 0.7×	44 1.0×	14 0.6×	13	306
S. Jafarzadeh Norway	17	602 1.6×	94 1.2×	135 2.0×	19 0.4×	11 0.4×	45	619
J. E. Simmons United States	6	240 0.6×	47 0.6×	51 0.8×	28 0.6×	15 0.6×	10	290
T. Moran United States	11	357 0.9×	40 0.5×	54 0.8×	19 0.4×	12 0.5×	22	386

Countries citing papers authored by M. J. Penn

Since Specialization

Citations

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

Fields of papers citing papers by M. J. Penn

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by M. J. Penn. 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 M. J. Penn. The network helps show where M. J. Penn may publish in the future.

Co-authorship network of co-authors of M. J. Penn

This figure shows the co-authorship network connecting the top 25 collaborators of M. J. Penn. A scholar is included among the top collaborators of M. J. Penn 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 M. J. Penn. M. J. Penn 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

Simões, Paulo J. A., et al.. (2024). Precise timing of solar flare footpoint sources from mid-infrared observations. Monthly Notices of the Royal Astronomical Society. 532(1). 705–718. 2 indexed citations

Reardon, K., et al.. (2022). Chromospheric Carbon Monoxide Formation around a Solar Pore. The Astrophysical Journal. 930(1). 87–87. 4 indexed citations

Cao, Wenda, Nicolas Gorceix, C. Plymate, et al.. (2020). CYRA: the cryogenic infrared spectrograph for the Goode Solar Telescope in Big Bear. 213–213. 3 indexed citations

Simões, Paulo J. A., Graham S. Kerr, L. Fletcher, et al.. (2017). Formation of the thermal infrared continuum in solar flares. Springer Link (Chiba Institute of Technology). 28 indexed citations

Penn, M. J., D. Jennings, M Jhabvala, & Allen Lunsford. (2015). Infrared Flare Observations at 5 and 10 Microns. 1 indexed citations

Schad, Thomas A., M. J. Penn, & A. Pietarila. (2012). Coronal Rain Observed On-disk with He I Spectropolarimetry from DST/FIRS. AAS. 220. 1 indexed citations

Livingston, W. C., et al.. (2011). A Decade of Diminishing Sunspot Vigor. 1 indexed citations

Penn, M. J.. (2008). Near Infrared Observations of Solar Granulation. AGU Spring Meeting Abstracts. 2008. 1 indexed citations

Choudhary, Debi Prasad, et al.. (2008). Dynamics of Quiet Solar Chromosphere at the Limb. AGU Fall Meeting Abstracts. 2008. 2 indexed citations

10.

Jaeggli, Sarah A., H. Lin, D. L. Mickey, et al.. (2008). The Facility IR Spectropolarimeter for the Dunn Solar Telescope. AGU Spring Meeting Abstracts. 2008. 376–8. 1 indexed citations

11.

Plymate, C. & M. J. Penn. (2007). Recent Results From The NSO Array Camera. AAS. 210. 1 indexed citations

12.

Penn, M. J. & W. Livingston. (2006). Temporal Changes in Sunspot Umbral Magnetic Fields and Temperatures. The Astrophysical Journal. 649(1). L45–L48. 76 indexed citations

13.

Sankarasubramanian, K., M. J. Penn, & Alexei Pevtsov. (2005). Large-Scale structures and their role in solar activity : proceedings of the 22nd Sacrament Peak workshop held at the national solar observatory, Sacramento Peak, Sunspot, New Mexico, USA 18-22 October 2004. Astronomical Society of the Pacific eBooks. 2 indexed citations

14.

Sankarasubramanian, K., M. J. Penn, & Alexei Pevtsov. (2005). Large-scale Structures and their Role in Solar Activity. ASPC. 346. 54 indexed citations

15.

Penn, M. J., et al.. (2004). IR Vector Magnetic Fields II: Atomic and Molecular Line Polarization in a Sunspot. AAS. 204. 1 indexed citations

16.

Allen, J. E., et al.. (2002). Polarization of the Sodium D-Lines in Mercury's Atmosphere. DPS. 34. 1 indexed citations

17.

Lin, H., M. J. Penn, & J. R. Kuhn. (1998). Hei10830 A Line Polarimetry: A New Tool to Probe the Filament Magnetic Fields. The Astrophysical Journal. 493(2). 978–995. 57 indexed citations

18.

Lin, H., M. J. Penn, & J. R. Kuhn. (1997). HE I 10830 A Line Polarimetry: A New Tool to Probe the Filament Magnetic Fields. NASA STI/Recon Technical Report N. 98. 22262. 1 indexed citations

19.

Penn, M. J., et al.. (1997). He I 1083 nm OSCILLATIONS AND DOWNFLOWS NEAR THE NORTH SOLAR POLE. Solar Physics. 174(1-2). 359–366. 2 indexed citations

20.

Penn, M. J. & J. R. Kuhn. (1994). How bright is the [Si X] 1431 nm coronal emission line?. Solar Physics. 151(1). 51–56. 4 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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