Postdoctoral Research Scholar or Assistant Research Scientist in 21cm Observing and Analysis

Submission Information
Publish Date: 
Saturday, October 29, 2022
Archive Date: 
Saturday, December 17, 2022
Job Summary
Job Category: 
Post-doctoral Positions and Fellowships
Institution Classification/Type: 
Large Academic
Arizona State University
United States of America
Job Announcement Text: 

We invite applications for postdoctoral research scholar or assistant research scientist positions in 21cm data analysis.  We are seeking to fill up to two positions to conduct research on one or both of the following areas of emphasis: executing a 21cm observing program on the Owens Valley Long Wavelength Array (OVRO-LWA) and investigating Bayesian analysis of 21cm data with multiple experiments. The successful candidate(s) will work with Professors Danny Jacobs and Judd Bowman in the Low-Frequency Cosmology Laboratory and collaborate extensively with Dr. Steven Murray.

Observing Program: The successful candidate with this emphasis will carry out a program of deep 21cm observing using the newly upgraded OVRO-LWA with the goal of making ground-breaking limits at high redshift.  Program elements will include characterizing the response of the instrument, developing a pipeline which takes advantage of significant new resources, and generation of new results. Collaborating with OVRO engineering and science teams and with easy access to the telescope, the successful applicant will have a unique opportunity for developing and testing novel instrumental and analysis techniques.

Bayesian Analysis: The successful candidate with this emphasis will develop and apply sophisticated statistical models of systematic uncertainty to both global and interferometric redshifted 21cm observations.  Investigations may include development of the computational and theoretical machinery to enable joint parameter inference with propagated systematics and signal models, analysis of EDGES observations for deeper and more rigorous results using the new EDGES-3 instrument, development and application of a new statistical model of instrumental systematics to low-band HERA Phase II data and/or the OVRO-LWA, and combined inference from global signal and power spectrum observations with EDGES-3 and HERA Phase II.  The enormous sample of posterior models produced, including lightcones and power spectra, will be a rich training set for machine learning models currently being investigated within the 21cm cosmology community.  The intent is to make these models publicly accessible via an interactive JupyterHub server to promote their broad utility.

The positions are full-time, benefits-eligible positions with anticipated start dates of approximately July 2023. The initial appointments are for one year with subsequent annual renewals for at least two more years contingent upon satisfactory performance, the needs of the university, and the availability of resources.  The positions come with an annual fiscal-year salary of $70,000-$85,000, depending on experience, and an allocation for moving expenses.

The College of Liberal Arts and Sciences ( at ASU values cultural and intellectual diversity, and continually strives to foster a welcoming and inclusive environment. We are especially interested in applicants who will be able to add to the diversity of the academic community of the College.

Essential functions of the positions:  The successful applicant(s) will conduct original research advancing 21cm data analysis and/or systematic modeling, document findings and publish high-impact results, present at scientific meetings, engage in research collaborations, and support community outreach or other activities.

Minimum Qualifications:

  1. Ph.D. in a related field by the time of appointment, including (but not limited to) astrophysics, physics, and computer science.
  2. Applicants within four years of their Ph.D. award date will be considered for a postdoctoral position.  Applicants beyond four years will be considered for an assistant research scientist position.

Desired Qualifications:

  1.  Relevant experience in astrophysics research, statistical data analysis, and/or software development
  2.  A record of prior achievement and experience that shows the applicant’s potential to accomplish research and/or development objectives
  3. Evidence of strong verbal and written communication skills
  4. Evidence of ability to work well independently and in a team
  5. A demonstrated commitment to supporting and enhancing diversity, equity, and inclusion

Arizona State University is one of the most dynamic and fastest-growing institutions of higher learning in the United States.  An essential part of the university’s mission is promoting interdisciplinary science by integrating science and engineering. Center faculty and their research groups benefit from a variety of state-of-the-art facilities including high-performance computing, access to the 2x8.4m Large Binocular Telescope, 6.5m MMT telescope, 6.5m Magellan telescopes and a host of 2m-class telescopes owned and operated by the State of Arizona. ASU is a partner in the Giant Magellan Telescope, Hydrogen Epoch of Reionization Array, and Owens Valley Radio Observatory Long Wavelength Array.  It is participating in the CMB-S4 consortium and is a member of the Simons Observatory, Toltec project, and several astrophysics sub-orbital class programs.

To apply, please submit to and include the following:

  • Cover letter
  • Current curriculum vitae
  • Contact information for three references
  • A research overview not longer than eight pages (including figures and references) including a summary of your current and previous work
  • A statement addressing how your past and/or potential contributions to diversity and inclusion will advance ASU's commitment to inclusive excellence

The deadline for initial review of complete applications will be Friday, December 16, 2022.  Applications will continue to be accepted on a rolling basis for a reserve pool. Applications in the reserve pool may then be reviewed in the order in which they were received until the position is closed.

A background check is required for employment. Applicants must be eligible to work in the United States.

Arizona State University is a VEVRAA Federal Contractor and an Equal Opportunity/Affirmative Action Employer. All qualified applicants will be considered without regard to race, color, sex, religion, sexual orientation, gender identity, national origin, disability, protected veteran status or any other basis protected by the law.,

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You may request a hard copy of the report by contacting the ASU Police Department at 480-965-3456.

COVID-19 Vaccination - Arizona State University is a federal contractor and subject to federal regulations which may require you to produce a record of a COVID-19 vaccination.  For questions about medical or religious accommodations, please visit the Office of Diversity, Equity and Inclusion’s webpage:

Pay Compensation
Salary Min: 
$70000.00 (USD)
Salary Max: 
$85000.00 (USD)
Included Benefits: 

Postdoctoral benefits can be found at:

Assistant Research Scientist staff benefits can be found at:

Application Deadline: 
Friday, December 16, 2022
Current Status of Position: 
Accepting Applicants
Apply to Job
Attention To: 
Judd Bowman
Inquiries About Job
Attention To: 
Judd Bowman
21cm postdoc/research scientist position