ROSES ID: NNH11ZDA001N Selection Year: 2012
Program Element: Focused Science Topic
Principal Investigator: Joel Allred
Affiliation(s): NASA Goddard Space Flight Center
Project Member(s):
Holman, Gordon D. Co-I NASA's Goddard Space Flight Center
Su, Yang Collaborator University of Graz
Summary:
Flares dramatically enhance emission in numerous atomic lines and continua. If properly interpreted, this emission can reveal vital information about the Sun's atmospheric state during flares. However, due to the complexity of the radiative transfer in the Sun's atmosphere, extracting this information can be quite difficult. Here we propose to perform radiative hydrodynamic simulations of the response of the solar atmosphere to flare heating. The simulations model radiative transfer coupled with hydrodynamics and make predictions of how emission will increase during flares. We will correlate our predictions with data from the RHESSI and SDO space craft. We will use spectral fitting of RHESSI hard X-ray observations to deduce details of electron beams impacting on the chromosphere. A model of the electron beam deduced from RHESSI observations will be injected as a heating term into our code to simulate the radiative hydrodynamic response to flare heating. With this heating as input, the model will solve in detail the dynamics of the flaring atmosphere and can be used to predict emission, densities, velocities, temperatures, and emission measures as a function of time during the flare simulation. These will be compared with observations.Performance Year | Reference | Investigation Type | Actions |
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1 | Allred, Joel C.; Kowalski, Adam F.; Carlsson, Mats; (... | not set | |
1 | Kowalski, Adam F.; Hawley, S. L.; Carlsson, M.; Allr... | not set |
Performance Year | Reference | Actions |
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1 | Allred, Joel C.; Holman, G. D.; (2012), Modeling the So... | |
1 | Kowalski, Adam; Allred, J. C.; Carlsson, M.; Hawley,Â... | |
1 | Allred, Joel; Kowalski, Adam; Carlsson, Mats; (2015), A... | |
1 | Caspi, A.; McTiernan, J. M.; Shih, A.; Martinez Oliveros, J.... | |
1 | Allred, J. C.; (2015), Modeling the Emission from the 15 F... | |
1 | Inglis, A. R.; Christe, S.; Glesener, L.; Krucker, S... | |
1 | Christe, S.; Shih, A. Y.; Krucker, S.; Glesener, L.;... | |
1 | Guidoni, Silvina E.; Allred, Joel C.; Alaoui, Meriem;... | |
1 | Shih, Albert Y.; Christe, Steven; Alaoui, Meriem; All... |