Concepedia

Matthew J. Penn

MJ

29

Publications

1.1K

Citations

20

H-Index

1986

Active since

Affiliations

National Solar Observatory(Current)

University of Hawaii System

U.S. National Science Foundation

NSF NCAR High Altitude Observatory

NSF National Center for Atmospheric Research

Matthew J. Penn is an author at National Solar Observatory specializing in engineering, astrophysics, and space weather.

Top concepts

EngineeringAstrophysicsSpace WeatherSolar VariabilityPhotometrySolar ConvectionSolar Terrestrial EnvironmentSolar ActivityNatural SciencesSpectroscopy

Publications per year

1986–2023

29

Publications

29

A New Precise Measurement of the Coronal Magnetic Field Strength

H. Lin, Matthew J. Penn, S. Tomczyk · The Astrophysical Journal · 2000 · 234 citations · Full text

H-alpha spectra of dynamic chromospheric processes in five well-observed X-ray flares

R. C. Canfield, Matthew J. Penn, J. P. Wülser et al. · The Astrophysical Journal · 1990 · 110 citations

DECREASING SUNSPOT MAGNETIC FIELDS EXPLAIN UNIQUE 10.7 cm RADIO FLUX

W. Livingston, Matthew J. Penn, Leif Svalgaard · The Astrophysical Journal Letters · 2012 · 103 citations · Full text

Engineering, Solar Convection, Plasma Physics +23

Are Sunspots Different During This Solar Minimum?

W. Livingston, Matthew J. Penn · Eos · 2009 · 85 citations · Full text

Engineering, Solar Convection, Solar Minimum +19

Does Magnetic Flux Submerge at Flux Cancelation Sites?

K. L. Harvey, H. P. Jones, C. J. Schrijver et al. · Solar Physics · 1999 · 69 citations

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