Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 122 for “"Flares"”.
-
The Impact of Sunspot Rotation on Solar Flares
Solar flares are one mechanism to release stored magnetic energy in the Sun’s atmosphere. This thesis aims to determine whether sunspot rotation can inject the energy required for solar flares into the corona. This thesis investigates the relationship between sunspot rotation and solar flares, and …
-
A Statistical Study of Hard X-Ray Solar Flares
… of a statistical study of hard x-ray solar flares are presented in this dissertation. Two methods of analysis were used, the Diffusion Entropy (DE) method coupled with an analysis of the data distributions and the Rescaled Range (R/S) Method, sometimes referred to as "Hurst's method". …
-
Automatic prediction of solar flares and super geomagnetic storms
… may produce many harmful effects on Earth. Solar flares and Coronal Mass Ejections (CMEs) are believed to be the major causes of geomagnetic storms. Thus, establishing a real time forecasting method for them is very important in space weather study. The topics covered in this dissertation are: the …
-
Dynamics of filaments, flares and coronal mass ejections (CMEs)
… surface phenomena such as filament eruptions, flares, the coronal mass ejections (CMEs), the core of so-called solar activity, and the properties of the associated magnetic field for the development of forecasts of solar activity and space weather. Both statistical and case studies have been …
-
Hard X-ray and radio studies of solar flares
… acceleration and transport effects during solar flares. In this thesis we present observations of two solar flares. In the first event we report what we believe to be the first observation of hard X-ray emission formed in a coronal, flare-related jet. Occurring on the 22nd of August 2002, the …
-
Wave-particle interactions in the solar wind and solar flares
… important role in both the solar wind and solar flares. The dynamics of plasma turbulence in these settings controls the strength of the interactions, by determining the amplitudes of the small-scale electromagnetic fluctuations that have the largest effect on the particles. Because turbulence …
-
Small and large-scale magnetic fields involved with solar flares
Solar flares are generally identified as an important source of disturbances that affect space weather, while many aspects of the basic flare process are still not well understood. The purpose of the present work has been to investigate the small and large-scale magnetic structures and their …
-
Numerical simulations of radiation and heating from non-thermal electrons in solar flares
This thesis investigates heating and thermal and non-thermal X-ray emission from magnetic loops in active regions of the solar atmosphere using numerical simulations. The simulations also allow investigation of Type III radio emission. In our model we vary a number of physical parameters such as …
-
Automated Prediction of Solar Flares Using SDO Data. The Development of An Automated Computer System for Predicting Solar Flares Based on SDO Satellite Data Using HMI Images Analysis, Visualisation, and Deep Learning Technologies
… as a major driver of space weather is solar flares. Solar flares can be defined as an enormous eruption in the sun's atmosphere. This phenomenon happens when magnetic energy stored in twisted magnetic fields, usually near sunspots, is suddenly released. Yet, their occurrence is not fully …
-
Automated Prediction of Solar Flares Using SDO Data. The Development of An Automated Computer System for Predicting Solar Flares Based on SDO Satellite Data Using HMI Images Analysis, Visualisation, and Deep Learning Technologies
… as a major driver of space weather is solar flares. Solar flares can be defined as an enormous eruption in the sun's atmosphere. This phenomenon happens when magnetic energy stored in twisted magnetic fields, usually near sunspots, is suddenly released. Yet, their occurrence is not fully …
-
An Investigation of Sudden Frequency Deviations Due to the Immediate Ionospheric Effects of Solar Flares
Made available in DSpace on 2014-12-08T22:23:58Z (GMT). No. of bitstreams: 1 6612314.pdf: 7455238 bytes, checksum: bb063480c4e98e7a69d35dba302a0012 (MD5) Previous issue date: 1966
-
Measurements that fill gaps in emission inventories: gas flares, household biomass stoves, and brick kilns
The purpose of this body of work is to fill gaps in emission inventories that in turn serve as inputs to global climate models. Emissions of aerosols are a focus because they can vary by orders of magnitude even for the same fuel, making field emissions measurements necessary. Three sources were …
-
Hard X-ray diagnostics of particle acceleration and energy release in solar flares and coronal jets
… of accelerating particles to high energies—solar flares and coronal jets, both of which are driven by magnetic reconnection. Hard X-ray (HXR) emissions, produced via bremsstrahlung, provide direct diagnostics of thermal plasma and energetic electron populations, offering critical insights into the …
-
Studies of solar white-light flares and small-scale magnetic structures observed in the near infrared
… by NJIT, detailed study of solar white-light flares and small magnetic structures, such as faculae and pores, are presented in this dissertation. The investigations focus on near-infrared observations at 1.56 um, which are good proxy of the deepest layer of the solar photosphere. I made …
-
Examining the response of the Martian atmosphere to increases in different portions of the electromagnetic spectrum during solar flares
… of the electromagnetic spectrum during solar flares. On March 24, 2015 the Mars Atmosphere and Volatile Evolution (MAVEN) mission satellite made measurements of the atmosphere and solar irradiance during a solar flare. These measurements were used by the Flare Irradiance Spectral Model (FISM) …
-
Identification of symptom domains in ulcerative colitis that occur frequently during flares and are responsive to changes in disease activity
… important symptom is that which 1) occurs during flares, 2) improves during effective therapy, and 3) resolves during remission. Twenty eight symptom domains were evaluated. Sixty subjects were surveyed, rating each symptom on three criteria with a 100 mm Visual Analog Scale (VAS). Important …
-
The analysis and the three-dimensional, forward-fit modeling of the hard x-ray and the microwave emissions of major solar flares
Solar flares are one of the most violent and energetic space weather events that are known to cause various adverse effects on the Earth. One of the major problems that must be solved to understand flares and to be able to predict their magnitudes is how the particles in the solar atmosphere are …
-
PROPERTIES AND CORRELATION OF FLARES AND CORONAL MASS EJECTIONS AND THEIR POSSIBLE RELEVANCE ON THE SOUTHERN NIGHT SKY BACKGROUND : A STATISTICAL STUDY
… to a statistical study of solar phenomena (flares and coronal mass ejections) and their possible effects on the Earth. The Sun, our star, can be considered a huge laboratory where we can study the interaction of a ionized gas with magnetic fields. In particular, the solar atmosphere (the …
Page 1 of 7