AR2665: The Lonely Sunspot of Solar Minimum

  • Released Friday, August 4, 2017
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Full-disk view of sunspot group moving across the solar disk, AIA 171 ångstrom band.

A large, lone sunspot group marches across the solar disk over a period of almost two weeks. The spot group stands out during this minimum in solar activity.

During the nearly two weeks of observations, a couple of instrument calibration maneuvers occurred. One happened on July 5, starting around 13:30UT (ending around 16:10UT), and another on July 12 around 15:10 UT (ending around 21:10UT).

Full-disk view of sunspot group moving across the solar disk, HMI continuum view.

M1.3 flare on July 9, 2017 in SDO/AIA 171 ångstrom filter

M2.4 flare on July 14, 2017 in SDO/AIA 171 ångstrom filter.

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This page was originally published on Friday, August 4, 2017.
This page was last updated on Wednesday, November 15, 2023 at 12:04 AM EST.

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