Title: AR11236 - Light Bridge, Dark Filament Post by: markt on June 19, 2011, 06:45:21 pm There seems to be some discussion as to exactly what the 'Light Bridges' are that divide large sunspots such as the one that dominates AR11236 http://www.spaceweather.com/archive.php?view=1&day=19&month=06&year=2011 However, from my perspective, looking at this picture, in this instance, it is quite clear that a 'Light Bridge' is just a filament that sits over the top of a sunspot. It appears light against the black of the sunspot core, however either side it can be seen to extend as a dark filament hovvering above the brighter solar disk.
(http://farm6.static.flickr.com/5119/5849014045_5affe1e2c3_o.jpg) (http://www.flickr.com/photos/56424473@N05/5849014045/) AR11236 Light Bridge, Dark Filament (http://www.flickr.com/photos/56424473@N05/5849014045/) by Mark Townley (http://www.flickr.com/people/56424473@N05/), on Flickr Sadly today was dominated by cloud and only intermittent gaps, as such this is the only capture of note that I managed. Visually the sun was very impressive with plenty of prominences all around the limb. The filaments showed quite a bit of subtle change as the day went on. Hopefully the 'British Summer' will improve from the cloud and rain of late and I will be able to get somemore views in soon! Mark Title: Re: AR11236 - Light Bridge, Dark Filament Post by: martinastro on June 20, 2011, 10:35:23 pm Beautiful image and interesting theory Mark, keep up the great solar work, these should be on the BBC Sky & Night ;)
Title: Re: AR11236 - Light Bridge, Dark Filament Post by: Anton on June 20, 2011, 11:32:53 pm Fantastic Mark you are the master of solar imaging great detail captured. :)
Title: Re: AR11236 - Light Bridge, Dark Filament Post by: markt on June 21, 2011, 07:11:25 am Thanks guys! I do send them into the S@N flickr group, so fingers crossed i'll get another on at some point :) |