IMAGING COMET ISON C/2012 S1 IN THE INNER CORONA AT PERIHELION

Miloslav Druckmuller, Shadia Rifai Habbal, Peter Aniol, Adalbert Ding, Huw Morgan

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Abstract

Much anticipation and speculation were building around comet ISON, or C/2012 S1, discovered on 2012 September 21 by the International Scientific Optical Network telescope in Russia, and bound for the Sun on 2013 November 28, with a closest heliocentric approach distance of 2.7 R ☉. Here we present the first white light image of the comet's trail through the inner corona. The image was taken with a wide field Lyot-type coronagraph from the Mees Observatory on Haleakala at 19:12 UT, past its perihelion passage at 18:45 UT. The perfect match between the comet's trail captured in the inner corona and the trail that had persisted across the field of view of 2-6 R ☉ of the Solar and Heliospheric Observatory Large Angle and Spectrometric Coronagraph Experiment/C2 coronagraph at 19:12 UT demonstrates that the comet survived its perihelion passage.
Original languageEnglish
Article numberL22
JournalAstrophysical Journal Letters
Volume784
Issue number2
DOIs
Publication statusPublished - 01 Apr 2014

Keywords

  • comets
  • general
  • individual (C/2012 S1 ISON)
  • methods
  • observational
  • sun
  • corona

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