White light solar flare by Stanford university
Taken by Apollo Lasky on June 6, 2023 @
Naperville, il
Click photo for larger image
| |
Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: Unavailable
|
|
| More images
Details:
This solar X-class flare was observed by TRACE at 16:43UT on 22 November 1998, in the 171Å passband (characteristic of 1-million degree gas; in gold, on the left), 1600Å UV passband (characteristic of thousands to hundred thousand degrees; in red on the right), and in the white-light passband (mostly visible light; in pale yellow in the right). The flare heats up an arcade of loops at the edge of the disk that light up in the extreme ultraviolet. They quickly cool down, and the material rains out of them. That the cooler material is seen in the 1600Å image is not unusual, but that it is dense enough to be seen even in the white-light channel next to the very bright solar disk makes this a rare event. The event was pointed out by Harry Warren (SAO, Cambridge, MA), who wrote a paper on this event to be published in Letters to the editor of the Astrophysical Journal.
----------------
HMI scans a narrow (75 mÅ) filter across the Fe I 6173 spectral line to produce images of the photosphere at several wavelengths. The images are combined to produce four main observables: continuum images of the solar photosphere near the Fe I 6173 absorption line-----------
171 Å Fe(ix) Quiet corona, upper transition region
--------------
1600 Å C(iv), continumm Transition region, upper photosphere
Photographer's website:
https://http://soi.stanford.edu/results/SolPhys200/Schrijver/TRACEpodarchive.html
|
|
|
