Concepedia

Penumbra Formation

Penumbra Formation is a geometric phenomenon in perspective rendering that denotes the partial shadow region arising from the incomplete occlusion of a light source, distinguished from the fully shadowed umbra by its graded luminance resulting from penumbral light overlap.

29

Publications

1.2K

Citations

99

Authors

54

Institutions

Publications per year

2017–2026

5

Parents

Publications

29

The ‘penumbra sign’ on T1-weighted MR imaging in subacute osteomyelitis: Frequency, cause and significance

A. M. Davies, D. Chas Mangham, R. J. Grimer et al. · Clinical Radiology · 1998 · 132 citations

, , +12

Induction of heat shock hsp70 mRNA and HSP70 kDa protein in neurons in the ‘penumbra’ following focal cerebral ischemia in the rat

Hiroyuki Kinouchi, Frank R. Sharp, Jari Koıstınaho et al. · Brain Research · 1993 · 125 citations

, , +17

The formation of a sunspot penumbra

R. Schlichenmaier, R. Rezaei, N. Bello González et al. · Astronomy and Astrophysics · 2010 · 83 citations · Full text

, , +15

The abrupt development of penumbrae in sunspots

A. M. Rucklidge, H. U. Schmidt, N. O. Weiss · Monthly Notices of the Royal Astronomical Society · 1995 · 64 citations · Full text

, , +17

FLUX CANCELLATION AND THE EVOLUTION OF THE ERUPTIVE FILAMENT OF 2011 JUNE 7

Stephanie L. Yardley, L. M. Green, David R. Williams et al. · The Astrophysical Journal · 2016 · 52 citations · Full text

, , +12

1–5 of 29

Authors

99

  1. FZ
    F. Zuccarello

    University of Catania, Italy

    4 publications · 126 citations

    4

    h-index

  2. PR
    P. Romano

    Osservatorio Astrofisico di Catania, Italy

    4 publications · 126 citations

    4

    h-index

  3. SL
    S. L. Guglielmino

    Osservatorio Astrofisico di Catania, Italy

    4 publications · 126 citations

    4

    h-index

  4. RR
    R. Rezaei

    Institut für Sonnenphysik, Germany

    3 publications · 147 citations

    3

    h-index

  5. RS
    R. Schlichenmaier

    Institut für Sonnenphysik, Germany

    3 publications · 147 citations

    3

    h-index

1–5 of 99

Institutions

54

  1. Osservatorio Astrofisico di Catania

    Catania, Italy

    5 h-index

    9 publications

    258 citations

  2. Institut für Sonnenphysik

    Freiburg im Breisgau, Germany

    3 h-index

    11 publications

    573 citations

  3. National Institute for Astrophysics

    Rome, Italy

    2 h-index

    2 publications

    78 citations

  4. Hungarian Academy of Sciences

    Budapest, Hungary

    2 h-index

    2 publications

    84 citations

  5. University of Catania

    Catania, Italy

    2 h-index

    6 publications

    201 citations

  6. Max Planck Institute for Solar System Research

    Göttingen, Germany

    2 h-index

    4 publications

    86 citations

  7. Georgetown University

    Washington, United States

    2 h-index

    10 publications

    340 citations

  8. Kyung Hee University

    Seoul, South Korea

    2 h-index

    2 publications

    54 citations

1–8 of 54

Venues

  1. The Astrophysical Journal

    ApJ · 9 publications · 262 citations

    9

    h-index

  2. The Astrophysical Journal Letters

    2 publications · 71 citations

    2

    h-index

  3. Brain Research

    1 publications · 125 citations

    1

    h-index

  4. Radiology

    1 publications · 29 citations

    1

    h-index

  5. Choice Reviews Online

    CRO · 1 publications · 32 citations

    1

    h-index

1–5