Postdoctoral Associate (Atomic Data and X-Ray Spectroscopy)

Submission Information
Publish Date: 
Monday, June 1, 2020
Archive Date: 
Monday, September 21, 2020
Job Summary
Job Category: 
Post-doctoral Positions and Fellowships
Institution Classification/Type: 
Large Academic
University of Maryland
Department Name: 
Department of Astronomy
College Park
United States of America
Job Announcement Text: 

Applications are now being accepted for a Postdoctoral Associate, to work in the X-ray Astrophysics Laboratory at NASA Goddard Space Flight Center (GSFC) in Greenbelt, MD. The position is funded through the University of Maryland College Park (UMCP) and the Center for Research and Exploration in Space Sciences & Technology II (CRESST II).

The X-ray Imaging and Spectroscopy Mission (XRISM) is a joint Japan-U.S. mission that will launch in 2022 and will include a high resolution spectrometer with sensitivity in the 0.5-10 keV energy band. The Postdoctoral Associate will work with Dr. Tim Kallman and the XRISM team at GSFC to explore systematic effects associated with atomic physics, plasma models and spectral fitting on the fitting of high-resolution X-ray spectra.  The work will involve exploring the dependence of plasma model results on atomic cross sections and rate coefficients for the prevalent categories of plasma models: collisional ionization equilibrium, photoionization equilibrium and non-equilibrium.

We invite researchers familiar with atomic physics, X-ray astrophysics, statistics and current computational techniques to apply. Candidates for this position should have earned a recent Ph.D. in Physics or Astronomy. The initial funding for this position will be for one year, with the possibility of extension for up to two more years depending on performance and funding availability.

The position will remain available until filled. Applications received by September 15, 2020 will receive best consideration.  Restrictions associated with the COVID-19 pandemic may require that the successful candidate work remotely, at least initially, which can be accommodated.  Each applicant should send a Curriculum Vitae, list of publications, statement of research interests, and contact information for three references to:

Application materials should be submitted to:

XRISM Postdoc


Mail Code 660.8, NASA/GSFC

Greenbelt, MD  20771, or

Via e-mail to


Technical information concerning the research should be directed to Dr. Kallman ( For information on UMCP’s Department of Astronomy and CRESST II, please contact Dr. Tracy Huard (

The University of Maryland, College Park, an equal opportunity/affirmative action employer, complies with all applicable federal and state laws and regulations regarding nondiscrimination and affirmative action; all qualified applicants will receive consideration for employment. The University is committed to a policy of equal opportunity for all persons and does not discriminate on the basis of race, color, religion, sex, national origin, physical or mental disability, protected veteran status, age, gender identity or expression, sexual orientation, creed, marital status, political affiliation, personal appearance, or on the basis of rights secured by the First Amendment, in all aspects of employment, educational programs and activities, and admissions.

Application Deadline: 
Tuesday, September 15, 2020
Current Status of Position: 
No Status Given (Opted Out)
Apply to Job
Attention To: 
Tim Kallman
XRISM Postdoc
Street Line 1: 
Mail Code 660.8, NASA/GFSC
Zip/Postal Code: 
United States of America
Inquiries About Job
Attention To: 
Tracy Huard
XRISM Postdoctoral Position