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filtergram

Overview page. Subjects: Astronomy and Astrophysics.

A photograph of the Sun taken through a filter with a particular wavelength range (bandpass), which is usually narrow and centred on part of some prominent spectral line. At visible...

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filtergram

Overview page. Subjects: Astronomy and Astrophysics.

A photograph of the Sun taken through a filter with a particular wavelength range (bandpass), which is usually narrow and centred on part of some prominent spectral line. At visible...

See overview in Oxford Index

filtergram

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 92 words.

A photograph of the Sun taken through a filter with a particular wavelength range (bandpass), which is usually narrow and centred on part of some prominent spectral line. At visible...

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filtergram

Ian Ridpath.

in A Dictionary of Astronomy

January 2012; p ublished online January 2012 .

Reference Entry. Subjects: Astronomy and Astrophysics. 90 words.

A photograph of the Sun taken through a filter with a particular wavelength range (bandpass), which is usually narrow and

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A Study on Red Asymmetry of Hα Flare Ribbons Using a Narrowband Filtergram in the 2001 April 10 Solar Flare

Ayumi Asai, Kiyoshi Ichimoto, Reizaburo Kitai, Hiroki Kurokawa and Kazunari Shibata.

in Publications of the Astronomical Society of Japan

February 2012; p ublished online February 2012 .

Journal Article. Subjects: Astrometry and Celestial Mechanics; Solar Physics. 4811 words.

We report on a detailed examination of the “red asymmetry” of the H[math] emission line seen during the 2001 April 10 solar flare by using a narrowband filtergram. We investigated the...

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Ellerman bomb

Ian Ridpath.

in A Dictionary of Astronomy

January 2012; p ublished online January 2012 .

Reference Entry. Subjects: Astronomy and Astrophysics. 78 words.

A small, very bright point in solar active regions, visible in *filtergrams tuned to the *line wings of

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Ellerman bomb

Edited by Ian Ridpath.

in A Dictionary of Astronomy

P ublished online February 2018 .

Reference Entry. Subjects: Astronomy and Astrophysics; Astronomical Instrumentation, Methods, and Techniques; Galaxies. 81 words.

A small, very bright point in solar active regions, visible in *filtergrams tuned to the *line wings of the ...

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spectroheliogram

Overview page. Subjects: Astronomy and Astrophysics.

A photograph of the Sun taken in the light of a strong Fraunhofer line (or part of the line). Most commonly, the Hα and calcium K lines are chosen for spectroheliograms, which then show...

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Ellerman bomb

Overview page. Subjects: Astronomy and Astrophysics.

A small, very bright point in solar active regions, visible in filtergrams tuned to the line wings of the Hα line. Ellerman bombs occur at the footpoints of arch filaments, often in the...

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Umbral Fine Structures in Sunspots Observed with Hinode Solar Optical Telescope

Reizaburo Kitai, Hiroko Watanabe, Tahei Nakamura, Ken-ichi Otsuji, Takuma Matsumoto, Satoru UeNo, Shin’ichi Nagata, Kazunari Shibata, Richard Muller, Kiyoshi Ichimoto, Saku Tsuneta, Yoshinori Suematsu, Yukio Katsukawa, Toshifumi Shimizu, Theodore D. Tarbell, Richard A. Shine, Alan M. Title and Bruce Lites.

in Publications of the Astronomical Society of Japan

November 2007; p ublished online November 2007 .

Journal Article. Subjects: Solar Physics. 3699 words.

A high resolution imaging observation of a sunspot umbra was made with the Hinode Solar Optical Telescope. Filtergrams at wavelengths of the blue and green continua were taken during three...

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Observations of Chromospheric Anemone Jets with Hinode Ca II Broadband Filtergraph and Hida Ca II Spectroheliograph

Satoshi Morita, Kazunari Shibata, Satoru UeNo, Kiyoshi Ichimoto, Reizaburo Kitai and Ken-ichi Otsuji.

in Publications of the Astronomical Society of Japan

August 2010; p ublished online August 2010 .

Journal Article. Subjects: Solar Physics. 10595 words.

We report on the first simultaneous observations of chromospheric “anemone” jets in solar active regions with the Hinode Solar Optical Telescope (SOT) Ca II H broadband filtergraph and the...

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chromosphere

Overview page. Subjects: Astronomy and Astrophysics.

A region of a star's atmosphere above its photosphere. The Sun's chromosphere extends from the temperature minimum, some 500 km above the base of the photosphere, outwards by 9000 km where...

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Internal Fine Structure of Ellerman Bombs

Yuki Hashimoto, Reizaburo Kitai, Kiyoshi Ichimoto, Satoru UeNo, Shin’ichi Nagata, Takako T. Ishii, Masaoki Hagino, Hiroyuki Komori, Keisuke Nishida, Takuma Matsumoto, Kenichi Otsuji, Tahei Nakamura, Tomoko Kawate, Hiroko Watanabe and Kazunari Shibata.

in Publications of the Astronomical Society of Japan

August 2010; p ublished online August 2010 .

Journal Article. Subjects: Solar Physics. 6039 words.

We conducted coordinated observations of Ellerman bombs (EBs) between Hinode Satellite and Hida Observatory (HOP12). Ca II H broad-band filter images of NOAA 10966 on 2007 August 9 and 10...

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Ca II K Spectral Study of an Emerging Flux Region using the Domeless Solar Telescope in Hida Observatory

Kenichi Otsuji, Reizaburo Kitai, Takuma Matsumoto, Kiyoshi Ichimoto, Satoru UeNo, Shin’ichi Nagata, Hiroaki Isobe and Kazunari Shibata.

in Publications of the Astronomical Society of Japan

August 2010; p ublished online August 2010 .

Journal Article. Subjects: Solar Physics. 4343 words.

A cooperative observation with Hida Observatory and the Hinode satellite was performed on an emerging flux region. Successive Ca II K spectro-heliograms of the emerging flux region were...

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Small-Scale Magnetic-Flux Emergence Observed with Hinode Solar Optical Telescope

Kenichi Otsuji, Kazunari Shibata, Reizaburo Kitai, Satoru UeNo, Shin’ichi Nagata, Takuma Matsumoto, Tahei Nakamura, Hiroko Watanabe, Saku Tsuneta, Yoshinori Suematsu, Kiyoshi Ichimoto, Toshifumi Shimizu, Yukio Katsukawa, Theodore D. Tarbell, Bruce Lites, Richard A. Shine and Alan M. Title.

in Publications of the Astronomical Society of Japan

November 2007; p ublished online November 2007 .

Journal Article. Subjects: Solar Physics. 2809 words.

We observed small-scale magnetic-flux emergence in a sunspot moat region by the Solar Optical Telescope (SOT) aboard the Hinode satellite. We analyzed filtergram images observed at...

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Statistical Study on the Nature of Solar-Flux Emergence

Kenichi Otsuji, Reizaburo Kitai, Kiyoshi Ichimoto and Kazunari Shibata.

in Publications of the Astronomical Society of Japan

October 2011; p ublished online October 2011 .

Journal Article. Subjects: Solar Physics. 7205 words.

We studied 101 flux emergence events ranging from small ephemeral regions to large emerging flux regions that were observed with the Hinode Solar Optical Telescope filtergram. We...

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Comparison between Hinode/SOT and SDO/HMI, AIA data for the study of the solar flare trigger process

Yumi Bamba, Kanya Kusano, Shinsuke Imada and Yusuke Iida.

in Publications of the Astronomical Society of Japan

December 2014; p ublished online December 2014 .

Journal Article. Subjects: Astronomy and Astrophysics. 5591 words.

Understanding the mechanism that produces solar flares is important not only from the scientific point of view but also for improving space weather predictability. There are numerous...

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