Scaling laws of tomographically reconstructed physical parameters of quiet-Sun coronal loops

MCCORMACK, C.; VÁSQUEZ, A.M.; LÓPEZ FUENTES, M.C.; MANDRINI, C.H.

Congreso; 42nd COSPAR Scientific Assembly; 2018

The knowledge of the relation among different physical parameters ofcoronal magnetic loops allows us obtaining observational scaling laws tocompare to those derived from theoretical coronal heating models. Inprevious works, theoretical scaling laws have been compared withobservations of magnetic loops belonging to active regions (AR) (seeMandrini, Demoulin and Klimchuk 2000, ApJ, 530, 999). Since in thequiet-Sun corona loops are not directly observable the task is moredifficult. In recent works, a technique called differential emissionmeasure tomography (DEMT) was developed. This technique provides thethree-dimensional distribution of the average temperature and density inthe coronal volume from a series of observations from EUV telescopesthroughout a solar rotation (see the review of Vasquez 2016, AdSpR, 57,1286). The tomographic results are combined with magnetic fieldextrapolations to obtain average temperature and density of the plasmaalong the field lines. In this work, we study the scaling laws obtainedfrom the analysis of parameters reconstructed tomographically forCarrington rotation 2081 (see Mac Cormack et al 2017, ApJ, 843, 70). Wecompare these scaling laws with the expected relations according to themost known models of coronal heating.