Talk:Solar flare

Stellar flares

Flares have long been observed from stars other than the Sun (see flare stars) but we have no stand-alone article on xxx, xxx being flares or chromospheres or coronas or transition regions or any of the magnetically-linked atmospheric phenomena, in other stars ... the links to these phenomena are all to the "Solar xxx" articles. This hampers a badly-needed overhaul of stellar atmosphere which should at least mention these things more generally; as well as missing these subjects in their own right. — Preceding unsigned comment added by BSVulturis (talk • contribs) 20:51, 22 February 2019 (UTC)

Wrong distance in "Classification" ?

In the Classification section there seems to be a mix-up of distances. It says:

"as measured by the GOES spacecraft at the Sun-Earth distance from the Sun of 2.7×10¹⁷ km."

But the Sun-Earth distance is: Mean distance from Earth = 1 AU ≈ 1.496×10⁸ km

It seems that someone used the: Mean distance from Milky Way core ≈ 2.7×10¹⁷ km ≈ 29,000 light-years

The two values differ by a 10⁹ factor. Rps (talk) 13:40, 29 October 2021 (UTC)

List of telescopes

Is the list of flare-observing telescopes really necessary here? I think it all should be moved to Solar telescope, however, I'd like to hear others' thoughts on this before I move them. CoronalMassAffection (talk) 21:31, 19 November 2021 (UTC)

Since no one has raised any objections, I have moved the info that was previously in the list to List of solar telescopes, Talk:List of solar telescopes, and to their respective articles if the info was not already there. CoronalMassAffection (talk) 03:45, 24 December 2021 (UTC)

Flashes in flare videos

Hi all. I have removed all four videos present in the article due to concerns over whether or not they conform to the W3C Web Content Accessibility Guidelines 2.2, specifically about seizures and physical reactions. The videos in question are:

• File:The Best Observed X-class Flare.ogv (see onward from 0:35)
• File:X-class flare Aug. 9, 2011.ogv
• File:NASA's Fermi Detects the Highest-Energy Light from a Solar Flare.ogv (see clip starting at 0:50)
• File:AR1515 Releases X1.1 Class Flare.ogv

These flashes are produced as a result of SDO/AIA's automatic exposure-control algorithm, which avoids overexposure during flares by alternating between long and short exposures (noted in, for example, Schrijver et al 2011). Displaying successive photos that were taken with different exposure times in the form of a video (as is done in the aforementioned files) will produce flashes, which is both a potential hazard and misleading to the viewer as to the nature of flares. I believe the former concern falls under WCAG 2.2 Success Criterion 2.3.1 Three Flashes or Below Threshold, which requires the following.

"Web pages do not contain anything that flashes more than three times in any one second period, or the flash is below the general flash and red flash thresholds."

Therefore, I have WP:BOLD removed the videos from the article and given my justification here, as it was too lengthy for the edit summary. Perhaps I am overreacting, but I think it is better to be safe than sorry when handling something like this.

Going forward, this flashing can be eliminated by normalizing by exposure time, and I hope to get to uploading some of these in the future. CoronalMassAffection (talk) 18:33, 29 December 2023 (UTC)

Wavelengths

" at all wavelengths, from radio waves to gamma rays "

Which is it? all wavelengths or from radio waves to gamma rays? If it IS all wavelengths, the flare couldn't have a wavelength larger than the sun.

sorry if this is pedantic, I'm genuinely confused. proud advocate of pirate speak wikipedia (talk) 02:22, 24 May 2024 (UTC)

I agree that "at all wavelengths" is too ambiguous and have removed it (dif). CoronalMassAffection (talk) 01:50, 25 May 2024 (UTC)