IRIS views Nano-Flares on the Sun

  • Released Monday, September 21, 2020
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Opening full-disk solar view from AIA 304 angstroms, zooming in and fading in IRIS SJI at 1400 angstroms.

Nanoflares, energy releases powered by small magnetic reconnection events in the solar coronal loops, have long been hypothesized as one of the sources for heating the solar corona to million-degree temperatures. Much of the evidence for this has been indirect, and difficult to distinguish from other hypothesized mechanisms.

In these visualizations, we present observational evidence of the IRIS imager detecting nanoflares in a coronal loop. In the IRIS imager, overlaid on AIA 304 angstrom imagery, the events stand out as jet-like protrusions roughly perpendicular to the curve of the coronal loop.

In this data, we see several strong nano-flare events near the 14:43 timestamp.

Opening full-disk solar view from AIA 171 angstroms, zooming in (but not showing) on the IRIS SJI field-of-view.

Opening full-disk solar view from AIA 304 angstroms, zooming in (but not showing) on the IRIS SJI field-of-view.

Opening close-up solar view from of SDO/AIA 304 angstroms with an inset of IRIS SJI 1400 angstroms. Camera slides to the right (making the inset slide to the left). These were source frames for some special composites and included here in case others may find them useful.

Credits

Please give credit for this item to:
NASA's Scientific Visualization Studio

This page was originally published on Monday, September 21, 2020.
This page was last updated on Thursday, October 10, 2024 at 12:09 AM EDT.

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Related papers

Reconnection Nanojets in the Solar Corona

Reconnection Nanojets in the Solar Corona

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