Published November 2007
| Version v1
Journal article
Umbral Fine Structures in Sunspots Observed with Hinode Solar Optical Telescope
Contributors
Others:
- Institute for Chemical Research (ICR) ; Kyoto University [Kyoto]
- Institute of Laser Engineering (ILE) ; Osaka University [Osaka]
- Pfizer Japan Incorporated (NAGOYA LABORATORIES) ; Pfizer
- Department of Physics, Tokyo Institute of Technology (TOKYO INSTITUTE OF TECHNOLOGY) ; Tokyo Institute of Technology [Tokyo] (TITECH)
- Graduate School of Information Sciences [Sendai] ; Tohoku University [Sendai]
- Graduate School of Information Sciences ; Tohoku University [Sendai]
- Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides (CASSIOPEE) ; Université Nice Sophia Antipolis (1965 - 2019) (UNS) ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur ; COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
- Department of Physics ; Kyoto University [Kyoto]
- Department of Electrical Engineering and Bioscience ; Waseda University
- Department of Mechanical Engineering and Materials Science ; Yokohama National University
- National Institute for Materials Science (NIMS)
- Fujitsu Laboratories LTD. ; Fujitsu Laboratories Ltd.
- Laboratoire Astrophysique de Toulouse-Tarbes (LATT) ; Université Toulouse III - Paul Sabatier (UT3) ; Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) ; Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) ; Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)
- Institut of Multidisciplinary Research for Advanced Materials ; Tohoku University [Sendai]
- Fujitsu Laboratories of America, Inc., Sunnyvale ; Fujitsu Laboratories of America, Inc., Sunnyvale CA
- Scool of Biological Sciences ; The University of Sydney
- Scool of Biological Sciences (University of Sydney) ; The University of Sydney
- Biological Sciences A08 ; The University of Sydney
- University of Sydney (US) ; The University of Sydney
- Biological Sciences (University of Sydney) ; The University of Sydney
- Scool of Biological Sciences A08 ; The University of Sydney
Description
High resolution imaging observation of a sunspot umbra was done with Hinode Solar Optical Telescope (SOT). Filtergrams in wavelengths of blue and green continuum were taken during three consecutive days. The umbra consisted of a dark core region, several diffuse components and numerous umbral dots. We derived basic properties of umbral dots (UDs), especially their temperatures, lifetimes, proper motions, spatial distribution and morphological evolution. Brightness of UDs is confirmed to depend on the brightness of their surrounding background. Several UDs show fission and fusion. Thanks to the stable condition of space observation, we could first follow the temporal behavior of these events. The derived properties of internal structure of the umbra are discussed in viewpoint of magnetoconvection in a strong magnetic field.
Abstract
6 pages, 8 figures, accepted for publication in PASJ (Hinode Special Issue)Abstract
International audienceAdditional details
Identifiers
- URL
- https://hal.archives-ouvertes.fr/hal-00286916
- URN
- urn:oai:HAL:hal-00286916v1