Postdoctoral Position in Astrophysics Instrumentation & Data Analysis at the University of Toronto

The Dunlap Institute for Astronomy and Astrophysics at the University  of Toronto seeks to appoint a postdoctoral researcher to work on  scientific and technical problems related to the TIME instrument, a  millimeter-wave experiment designed to use line intensity mapping to  probe reionization and cosmic star-formation.

The appointee is expected to contribute to the success of the TIME  instrument via design and testing, travel to Kitt Peak for instrument  installation, instrument assembly and operation, preparation of data  analysis pipelines, and/or data analysis. People with skills in  astronomical instrumentation, particularly in the mm-wavelength range,  software development for astronomical instruments, and experience in  Python are all encouraged to apply. If interested, the appointee will  also have an opportunity to work on other projects as well including  CMB-S4 and CCAT-Prime. Application link and further details can be  found here:

Galaxy Evolution with JWST Guaranteed Time Observations

*** Galaxy Evolution with JWST Guaranteed Time Observations ***

We invite applications for two postdoctoral positions to participate  in our 200-hour JWST guaranteed time program that will study galaxy  evolution from the Epoch of Reionization, through Cosmic Noon, and  down to intermediate redshifts.

Within the first year of JWST science operations, our “CANUCS”  Guaranteed Time Observer (GTO) program will use JWST’s NIRISS slitless  spectrograph to carry out a spatially-resolved slitless grism survey  of thousands of galaxies behind five massive z~0.5 lensing clusters.  These observations will produce maps of key physical quantities such  as stellar populations, ionized gas, metallicity, dust, etc. The  NIRISS slitless spectroscopy data will be supported by extensive  NIRCam imaging and subsequent multi-slit spectroscopic follow-up with  NIRSpec. The data will allow studies of galaxies from the Epoch of  Reionization, through the peak of cosmic star formation at z~2, and to  lower redshifts, including galaxies in the massive z~0.5 lensing  clusters. Additionally, we will in parallel also observe five offset  fields with NIRCam using 14 medium-band filters, giving a bonus  complementary imaging dataset of exquisite depth and resolution. For  more information on our guaranteed-time program,  see:

The postdoctoral fellows will be located at Saint Mary’s University in  Halifax, a major centre on the Atlantic coast of Canada that’s close  to nature and rich in history and culture. They will work within Dr.  Marcin Sawicki’s research group (,  which will consist of 4 postdoctoral fellows and several graduate  students embedded within the astronomy research ecosystem in the  Department of Astronomy and Physics and the Institute for  Computational Astrophysics. They will also interact closely with the  tight-knit CANUCS team located throughout Canada and beyond.

While the focus of the positions will be on the once-in-a-career JWST  GTO dataset, the fellows will also have time to carry out independent  research. They will also have opportunities (but no obligation) to  join in other key projects at Saint Mary’s University, such as in the  exploitation of our extremely deep-and-wide (~20 sq deg to ~27 mag)  Ugrizy dataset from the CLAUDS + HyperSuprimeCam (HSC) surveys  (, or the  development of the GIRMOS spectrograph  ( The fellows will also be  eligible to apply for Canadian observing time on JWST, Gemini, CFHT,  and ALMA, and to access High Performance Computing resources through  ACENET and Compute Canada.

The appointments are expected to start in September 2021 and will be  for up to three years, subject to satisfactory performance and the  availability of funds. We strongly encourage applications from all  qualified persons, including women, visible minorities, Aboriginal  people, and people with disabilities. We appreciate and welcome  diversity, and hire on the basis of merit.

All application materials should be submitted by 8 January 2021 via  email to  Applications should include a CV, a  statement of research interests and accomplishments, and a cover  letter, all as pdf files. Applicants should also arrange for three  referees to send reference letters directly to the same address by the  same date.

2021 JWST Postdoctoral Fellowship at iREx

Submission guidelines:

Submit by December 15th 2020 for full consideration. Open until filled.

Send inquiries to:

The Institute for Research on Exoplanets (iREx), affiliated with the Department of Physics at the Université de Montréal, is seeking applications for a postdoctoral position to join the NIRISS instrument team for the James Webb Space Telescope in order to contribute to the analysis and publication of NEAT observations (NIRISS Exploration of the Atmospheric diversity of Transiting exoplanets). NEAT is a large 200-hour JWST GTO program led by the NIRISS team and dedicated to the study of the atmosphere of 14 exoplanets using transit, eclipse and phase spectroscopy. More details on the NEAT program are available here.

Candidates should send a CV, a list of publications and a statement of main achievements and research interests (maximum 3 pages) to Three letters of recommendation should also be sent to the same address. All documents must be sent by December 15, 2020 for full consideration to be given to the application. However, the position will remain open until a candidate is selected.

A PhD in physics, astronomy or related discipline is required. Preference will be given to candidates who have completed their PhD within the last 3 years. The position has an expected start date in the Spring or Fall of 2021. The position is for a two-year term, renewable for a third year depending on performance and availability of funds.

The iREx includes an expanding team of about 50 people (professors, researchers and students) mainly from the Université de Montréal and McGill University, all working on various research programs linked to the study of exoplanets and other related fields of stellar astrophysics. iREx researchers are actively involved in various international projects related to the detection and characterisation of exoplanets, including the James Webb Space Telescope (JWST), SPIRou, NIRPS and high dispersion spectroscopy on 8-10m and giant telescopes. In addition, iREx researchers will have access to guaranteed time with JWST, SPIRou and NIRPS. More information on iREx research programs can be found on our website here.


The Université de Montréal promotes diversity in its workforce through its equal access to employment program. It encourages members of visible and ethnic minorities as well as women, Indigenous people, persons with disabilities and people of all sexual orientations and gender identities to apply.