Chornogor S. State of the low-temperatures layers in solar flare loops

Українська версія

Thesis for the degree of Candidate of Sciences (CSc)

State registration number

0404U001536

Thesis Registration Form

0404U001536.pdf

Applicant for

Specialization

  • 01.03.03 - Геліофізика і фізика сонячної системи

16-04-2004

Specialized Academic Board

Д 26.208.01

Main Astronomical Observatory

Essay

The thesis presents the results of the investigation of the velocities field and physical conditions in the chromospheric and photospheric levels based on spectral observations. The properties of the material motions at the flare H_alpha loops tops and bases are determined before and during the flares of different power. Temporal variations of the line-of-sight velocities at the H_alpha loops are compared with H_alpha and HXR-fluctuations at the different stages of the flare development. The semi-empirical photospheric models of a subflare are constructed. The models show a gradual penetration of the temperature and density inhomogeneities to the photosphere down. The simultaneous modeling of the physical conditions in the chromosphere and photosphere for two H_alpha loops in a bright flare shows a shift of the boundary of the transition layer down into the atmosphere and a presence of a hot region in the photosphere. It is show that a different mechanisms can be efficient at the different stages of the flare development. The processes related to the appearance of a flux tube from the sub-photospheric layers are important before and at the beginning of the flares. At this stage, the faint reconnections at the photospheric levels are possible. The disturbance of the low-temperature layers propagates along the loops to the photosphere down at the impulsive phase. The latter can be a result of the reconnection in the upper atmosphere.

Read more

Files

Autoreferat--Autoref.doc

Autoreferat--titul_stor.doc

Dissert--Risunki--ris2-1.pdf

Dissert--Risunki--ris2-2.pdf

Dissert--Risunki--ris2-3.pdf

Dissert--Risunki--ris3-1.pdf

Dissert--Risunki--ris3-10.pdf

Dissert--Risunki--ris3-11.pdf

Dissert--Risunki--ris3-12.pdf

Dissert--Risunki--ris3-13.pdf

Dissert--Risunki--ris3-14a.pdf

Dissert--Risunki--ris3-14b.pdf

Dissert--Risunki--ris3-15.pdf

Dissert--Risunki--ris3-16.pdf

Dissert--Risunki--ris3-17.pdf

Dissert--Risunki--ris3-2.pdf

Dissert--Risunki--ris3-3.pdf

Dissert--Risunki--ris3-4.pdf

Dissert--Risunki--ris3-5.pdf

Dissert--Risunki--ris3-6.pdf

Dissert--Risunki--ris3-7.pdf

Dissert--Risunki--ris3-8.pdf

Dissert--Risunki--ris3-9.pdf

Dissert--Risunki--ris4-1.pdf

Dissert--Risunki--ris4-2.pdf

Dissert--Risunki--ris4-3.pdf

Dissert--Risunki--ris4-4.pdf

Dissert--Risunki--ris4-5.pdf

Dissert--Risunki--ris4-6.pdf

Dissert--Risunki--ris4-7.pdf

Dissert--Text--Rozdil-3.doc

Dissert--Text--Rozdil-4_lit.doc

Dissert--Text--Rozdil1-2.doc

Similar theses

0523U100046

Kozak Liudmyla V.

Turbulent processes in near-Earth space

0521U101731

Golubov Oleksiy A.

Dynamic evolution of asteroids under non-gravitational forces

0521U100855

Ivanova Oleksandra V.

Physical and dynamical properties of active small bodies of the Solar System

0420U102210

Prysiazhnyi Andrii I.

Physical conditions in the inhomogeneous magnetized photosphere of the Sun

0419U004946

Shubina Olena S.

Peculiarities of short-periodic and long-periodic comets based on polarimetric and spectral observations