Multi-Thread Modeling of Coronal Loops with TRACE Data

Details Multi-Thread Modeling of Coronal Loops with TRACE Data Multi-Thread Modeling of Coronal Loops with TRACE Data

May 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spd....31.0211n&link_type=abstract

American Astronomical Society, SPD Meeting #31, #02.11; Bulletin of the American Astronomical Society, Vol. 32, p.812

Other

1

Scientific paper

The temperature Te(s) and density structure ne(s) of active region loops in EUV observed with TRACE is modeled with a multi-thread model. The model loops are synthesized from the summed emission of many loop threads that have a distribution of maximum temperatures and that satisfy the steady-state Rosner-Tucker-Vaiana (RTV) scaling law, modified by Serio et al. for gravitational stratification (RTVSp). From model-fitting of the 171 and 195 Angstroms fluxes of 41 loops, which have loop half lengths in the range of L=4-320 Mm, we find: (1) The EUV loops can be explained by near-isothermal loop threads in the temperature range of Te ~ 0.8-1.6 MK with substantially smaller temperature gradients than predicted by the RTVSp model, (2) the loop base pressure, p0 ~ 0.3+/- 0.1 dyne cm-2, is independent of the loop length L, it agrees with the RTVSp model for the shortest loops, but exceeds the RTVSp model up to a factor of 35 for the largest loops, and (3) the pressure scale height is consistent with hydrostatic equilibrium for the shortest loops, but exceeds the temperature scale height up to a factor of ~ 3 for the largest loops. This work was supported by the TRACE project at LMSAL (contract NAS5-38099). Ref.: Aschwanden,M.J., Nightingale,R.W., Alexander,D., Reale,F., and Peres,G. 2000, ApJ, subm., ``Evidence for Nonuniform Heating of Coronal Loops Inferred from Multi-Thread Modeling of TRACE Data'', URL="ftp://sag.lmsal.com/pub/aschwand/2000_reale.ps.gz"

Affiliated with

Also associated with

No associations

Rating

Multi-Thread Modeling of Coronal Loops with TRACE Data 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 Multi-Thread Modeling of Coronal Loops with TRACE Data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-Thread Modeling of Coronal Loops with TRACE Data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1348326