Solar Spicules Near and at the Limb, Observed from Hinode

Details Solar Spicules Near and at the Limb, Observed from Hinode Solar Spicules Near and at the Limb, Observed from Hinode

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009spd....40.1006s&link_type=abstract

American Astronomical Society, SPD meeting #40, #10.06; Bulletin of the American Astronomical Society, Vol. 41, p.824

Other

Scientific paper

Solar spicules appear as narrow jets emanating from the chromosphere and extending into the corona. They have been observed for over a hundred years, mainly in chromospheric spectral lines such as Hα. Because they are at the limit of visibility of ground-based instruments, their nature has long been a puzzle. In recent years however, vast progress has been made in understanding them both theoretically and observationally. Most recently, spicule studies have undergone a revolution because of the superior resolution, time cadence, and atmosphere-free observations from the Solar Optical Telescope (SOT) instrument on the Hinode spacecraft. Here we present observations of spicules from Hinode SOT, and consider how the observations from Hinode compare with historical observations. We include data taken in the blue and red wings of Hα, where the spicules have widths of a few 100 kms, and the longest ones reach 104 km in extent, similar to sizes long reported from ground-based instruments. Their dynamics are not easy to generalize, with many showing the upward movement followed by falling or fading, as traditionally reported, but with others showing more dynamic or even ejective aspects. There is a strong transverse component to their motion, as extensively reported previously from the Hinode data as evidence for Alfven waves.
NASA supported this work through its Living with a Star program.

Affiliated with

Also associated with

No associations

Rating

Solar Spicules Near and at the Limb, Observed from Hinode does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Solar Spicules Near and at the Limb, Observed from Hinode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar Spicules Near and at the Limb, Observed from Hinode will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1112143