Job Opportunities

Postdoc position in Solar Physics at the High Altitude Observatory of NCAR

 

Please follow this link to apply

 

HAO is hiring a post-doctoral fellow to work on the development of spectral line inversion tools based on machine-learning techniques to interpret spectropolarimetric observations of the solar chromosphere.

Spectropolarimetry, the science of measuring the intensity and polarization of light as a function of wavelength, is a very powerful tool for remote sensing of the thermodynamic and magnetic properties of astrophysical plasmas. The interpretation of the polarized spectrum of  the Sun’s chromosphere is an area of research still under development. In particular, scattering polarization and the Hanle effect imprint signatures on the chromospheric spectra that are of high diagnostic value, yet difficult to interpret.The complexity of the forward problem alone poses a significant challenge to our current computing capabilities. 

New facilities, most notably NSO’s Daniel K. Inouye Solar Telescope, will soon be producing large volumes of data that will need to be digested in automated ways in order to provide high-level data products to the scientific community. On the other hand, designing and running efficient and reliable inversion schemes to routinely interpret such large data volumes is practically unaffordable from a computational point of view. Combining forward modeling with machine learning techniques in order to develop quick-look inversion tools will greatly advance our ability to interpret chromospheric polarization spectra in an efficient manner, and open the path to exploring more efficient algorithms for full spectro-polarimetric inversions. 

The successful candidate will work at HAO in collaboration with Drs. Roberto Casini, Rebecca Centeno, Natasha Flyer, and Ricky Egeland. She or he will use HAO’s HanleRT code (del Pino Alemán, Casini, & Manso Sainz 2016) to create training databases of synthetic polarization profiles for various solar atmospheric models and spectral lines. These will be used to explore different machine learning and pattern recognition techniques to parametrize the inverse mapping of the synthetic databases to solar atmospheric models. The final deliverable of this project will be to develop quick-look inversion methods for certain chromospheric spectral lines.

Requirements: PhD in Physics, Astrophysics, or related sciences; working knowledge of  machine learning techniques, and experience with high performance computing and data visualization methods and tools (e.g., IDL, Python) will be necessary. A working knowledge of solar spectroscopy and spectropolarimetry is highly desirable.

This is a two year appointment, renewable after the first year, subject to satisfactory performance. The successful candidate may start as soon as October 1, 2019. 


Follow the instructions in this link to apply. Please submit a CV with a list of publications and a 1-page statement of interest with your application. Email Rebecca Centeno (rce@ucar.edu) if you have any questions.

The University Corporation for Atmospheric Research (UCAR) is an equal opportunity/equal access/affirmative action employer that strives to develop and maintain a diverse workforce. UCAR is committed to providing equal opportunity for all employees and applicants for employment and does not discriminate on the basis of race, age, creed, color, religion, national origin or ancestry, sex, gender, disability, veteran status, genetic information, sexual orientation, gender identity or expression, or pregnancy.

Whatever your intersection of identities, you are welcome at the University Corporation for Atmospheric Research (UCAR). We are committed to inclusivity and promoting an equitable environment that values and respects the uniqueness of all members of our organization.