Education:

Research Interests: ^top

• Image Processing for Solar Physics
• Statistical signal processing for Exoplanet Detection
• Tomographic Reconstruction of the 3D solar corona from mutli-spacecraft/multi-wavelength data

Biography: ^top

I have always been fascinated by how scientists learn about the Universe we all share.  After all, no one  can measure the  temperature in the center of a star or see subatomic particles.  This curiosity about the scientific learning process naturally led me to questions about the information content of various types of data.  In particular, I have been researching issues that involve retrieving 3D (and more D) information from many types of 2D images of the Sun.  Recently, I have become fascinated with the problem of directly imaging planets around other stars.  This is an extraordinarily challenging problem because the star will outshine any of its planets by a factor of at least one million, making the problem somewhat akin to trying to read street signs when driving at night into somebody’s headlights with a really dirty windshield.

Publications: ^top

Selected

1. Frazin, RA., “Utilization of the Wavefront Sensor and Short-exposure Images for Simultaneous Estimation of Quasi-static Aberration and Exoplanet Intensity,” The Astrophysical Journal, vol. 767, article id. 21 (2013).
2. Nuevo, F.A., Huang, Z., Frazin, R., Manchester, W.B. IV, Jin, M., Vásquez, A.M., “Evolution of the Global Temperature Structure of the Solar Corona during the Minimum between Solar Cycles 23 and 24,”  The Astrophysical Journal, vol. 773, article id. 9 (2013).
3. Frazin, RA., “Coronal Mass Ejection Reconstruction from Three Viewpoints via Simulation Morphing. I. Theory and Examples,” The Astrophysical Journal, vol. 761, article id. 24 (2012).
4. Frazin, R.A.,  Vásquez, A.M., Thompson, W.T., Hewett, R.J., Lamy, P., Llebaria, A., Vourlidas, A., Burkepile, J., “Intercomparison of the LASCO-C2, SECCHI-COR1, SECCHI-COR2, and Mk4 Coronagraphs,” Solar Physics, vol. 280, pp. 273-293 (2012).
5. Huang, Z., Frazin, R.A., Landi, E., Manchester, W.B., Vásquez, A.M., Gombosi, T.I., “Newly Discovered Global Temperature Structures in the Quiet Sun at Solar Minimum,” \emph{The Astrophysical Journal}, vol. 755, article id. 86 (2012).
6. Shearer, P., Frazin, R.A., Hero, A.O. III, Gilbert, A.C., “The First Stray Light Corrected EUV Images of Solar Coronal Holes,” \emph{The Astrophysical Journal Letters}, vol. 749, article id. L8, (2012).