All Coronal Loops are the Same: Evidence to the Contrary

Details All Coronal Loops are the Same: Evidence to the Contrary All Coronal Loops are the Same: Evidence to the Contrary

2005-05-30

arxiv.org/abs/astro-ph/0505593v1

Astrophys.J. 627 (2005) L81

Astronomy and Astrophysics

Astrophysics

Accepted for publication in ApJ Letters

Scientific paper

10.1086/431950

The 1998 April 20 spectral line data from the Coronal Diagnostics Spectrometer (CDS) on the {\it Solar and Heliospheric Observatory} (\SOHO) shows a coronal loop on the solar limb. Our original analysis of these data showed that the plasma was multi-thermal, both along the length of the loop and along the line of sight. However, more recent results by other authors indicate that background subtraction might change these conclusions, so we consider the effect of background subtraction on our analysis. We show Emission Measure (EM) Loci plots of three representative pixels: loop apex, upper leg, and lower leg. Comparisons of the original and background-subtracted intensities show that the EM Loci are more tightly clustered after background subtraction, but that the plasma is still not well represented by an isothermal model. Our results taken together with those of other authors indicate that a variety of temperature structures may be present within loops.

Affiliated with

Also associated with

No associations

Rating

All Coronal Loops are the Same: Evidence to the Contrary 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 All Coronal Loops are the Same: Evidence to the Contrary, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and All Coronal Loops are the Same: Evidence to the Contrary will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-315360