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The Postdoctoral Fellowship in Astrophysics 2027 at Stockholm University presents an outstanding opportunity for early-career researchers who want to contribute to world-class astrophysics research in Sweden. This fully funded fellowship places successful candidates at the forefront of astronomical discoveries by working with data from the James Webb Space Telescope (JWST).

Hosted by the Department of Astronomy at Stockholm University, the fellowship focuses on studying Haro11, the nearest known Lyman continuum leaker galaxy. Researchers will investigate how ionizing photons escape galaxies, examine embedded star clusters, and analyze black hole-powered sources using advanced imaging and spectroscopy techniques.

Beyond its exciting scientific goals, this fellowship offers an excellent working environment, competitive salary, international collaborations, and access to some of the world's most advanced astronomical research facilities.

If you are an astrophysics researcher seeking to advance your academic career, this opportunity should be on your shortlist.

Why Choose Stockholm University?

Stockholm University is one of Sweden's leading research institutions, recognized internationally for excellence in science and innovation. The Department of Astronomy consists of approximately 80 employees, including researchers, professors, postdoctoral fellows, and doctoral students.

The department is also a key member of the Oskar Klein Centre, one of Europe's leading centers for astrophysics, cosmology, and particle physics research.

Researchers regularly collaborate with prestigious institutions such as:

Royal Institute of Technology (KTH)
Nordita (Nordic Institute for Theoretical Physics)
International astronomy research groups

The university values diversity, equality, and interdisciplinary collaboration, creating an environment where researchers from around the world can thrive.

About the Research Project

The fellowship centers on one of the most exciting topics in modern astrophysics.

Researchers will investigate Haro11, a nearby galaxy that allows astronomers to better understand conditions that existed during the early universe.

The project aims to answer major scientific questions including:

How do ionizing photons escape galaxies?
What role do embedded star clusters play?
How do black holes influence galaxy evolution?
What physical mechanisms produce Lyman continuum leakage?

To answer these questions, the successful applicant will analyze observations obtained from the James Webb Space Telescope (JWST).

Advanced Research Tools You'll Use

The project gives researchers access to some of astronomy's most advanced observational technologies.

These include:

JWST NIRSpec observations
MIRI imaging
Integral Field Spectroscopy (IFS)
Photoionization modeling
Nebular emission modeling
High-resolution infrared imaging

These datasets enable researchers to explore obscured star-forming regions that were previously impossible to study in such detail.

Stockholm University Postdoctoral Fellowship Benefits

This fully funded postdoctoral fellowship offers an attractive package designed to support researchers professionally and financially.

Full-Time Employment

The fellowship begins with a two-year full-time appointment.

Subject to available funding, the position may be extended by an additional year, making the maximum duration three years.

Competitive Salary

Instead of a fixed stipend, Stockholm University provides:

Competitive individual salary
Full employment benefits
Swedish employment protections
Professional development opportunities

Salary is determined individually according to qualifications and experience.

World-Class Research Environment

Successful applicants will benefit from:

International collaborations
Modern research facilities
Frequent seminars
Access to leading astronomers
Collaborative interdisciplinary projects
Mentorship from experienced researchers

Excellent Location

The fellowship is based in Stockholm, one of Europe's most attractive cities for researchers.

Benefits of living in Stockholm include:

Excellent public transportation
High quality of life
Safe living environment
Strong international community
Access to research institutions across Sweden

Research Areas Covered

The fellowship primarily focuses on:

James Webb Space Telescope Research

Candidates will analyze groundbreaking observations collected by JWST.

The telescope provides unprecedented sensitivity in the infrared, allowing researchers to investigate galaxies in remarkable detail.

Integral Field Spectroscopy

Researchers will use integral field spectroscopy to examine:

Gas distribution
Stellar populations
Galactic dynamics
Ionized regions

This technique combines imaging and spectroscopy to provide three-dimensional views of astronomical objects.

Photoionization and Nebular Modelling

Applicants with experience in:

Photoionization codes
Nebular emission analysis
Stellar population modeling

will have an advantage during the selection process.

Eligibility Criteria

To qualify for the Stockholm University Postdoctoral Fellowship, applicants must satisfy several academic requirements.

Academic Qualifications

Applicants must possess:

A Swedish doctoral degree or equivalent international PhD
Relevant academic background in astrophysics or related disciplines
Degree completed before employment begins

Equivalent doctoral degrees from institutions outside Sweden are accepted.

Preferred Candidates

Preference will generally be given to researchers who:

Completed their PhD within the last three years
Demonstrate strong publication records
Have expertise in integral field spectroscopy
Possess experience with nebular modeling
Show excellent research potential

However, exceptions may apply under special circumstances according to university regulations.

Skills That Strengthen Your Application

Competitive applicants often possess experience in:

Astrophysics
Galaxy evolution
Spectroscopic data analysis
Infrared astronomy
Python programming
Scientific computing
Astronomical data reduction
Statistical analysis

Strong communication skills and the ability to work within international research teams are also highly valued.

Application Documents Required

Applicants should prepare the following documents before submitting their application:

Personal Letter

Your motivation letter should explain:

Why you are interested in this research
Relevant research experience
Career goals
Why Stockholm University is the right place for your research

Curriculum Vitae (CV)

Your CV should include:

Educational background
Publications
Research experience
Conferences attended
Technical skills
Awards and scholarships
References

Supporting Documents

Applicants should upload all additional documents requested in the official job advertisement.

Incomplete applications may not be considered.

How to Apply for the Stockholm University Postdoctoral Fellowship

The application process is completed entirely online.

Step 1

Prepare your:

Personal letter
Academic CV
Supporting documents

Step 2

Visit Stockholm University's online recruitment system.

Step 3

Complete the online application form carefully.

Step 4

Upload all required documents.

Step 5

Review your application thoroughly before submission.

Step 6

Submit your application before the deadline.

Late applications are generally not accepted.

Application Deadline

Deadline: 31 August 2026

Applicants are encouraged to apply well before the closing date to avoid last-minute technical issues.

Working Environment

Researchers joining this fellowship become part of a vibrant scientific community.

The Department of Astronomy includes approximately:

80 staff members
Around 30 PhD students
International researchers
Active collaborations with KTH and Nordita

The department hosts regular seminars, workshops, guest lectures, and collaborative research meetings that help foster innovation and academic excellence.

Career Opportunities After the Fellowship

Completing a postdoctoral fellowship at Stockholm University can significantly strengthen your academic career.

Former postdoctoral researchers often pursue careers as:

University faculty members
Research scientists
Observatory researchers
Space agency scientists
Data scientists
Astronomy project leaders

Experience working with JWST data is particularly valuable, as it represents one of the most important astronomical missions of this generation.

Frequently Asked Questions (FAQs)

What is the research focus of this fellowship?

The fellowship investigates Haro11, the nearest known Lyman continuum leaker galaxy. Researchers will analyze JWST observations using NIRSpec, MIRI imaging, and integral field spectroscopy to study ionizing photon escape, embedded star clusters, and black hole-powered sources.

How long does the fellowship last?

The initial appointment is for two years, with the possibility of a one-year extension, depending on funding availability.

Is the fellowship fully funded?

Yes. The position is fully funded and includes a competitive salary based on individual qualifications, along with full employment benefits provided by Stockholm University.

Who is eligible to apply?

Applicants must hold a doctoral degree in astrophysics or a closely related field. Equivalent international PhD qualifications are accepted, and candidates who completed their doctorate within the last three years are generally preferred.

Which skills are especially valuable?

Experience in integral field spectroscopy, photoionization modeling, nebular modeling, astronomical data analysis, and infrared observations will strengthen an application.

Can international researchers apply?

Yes. The fellowship welcomes qualified applicants from all countries. English is the working language of the research environment.

What documents are required?

Applicants should submit a personal letter, curriculum vitae, and all additional documents requested in the official recruitment advertisement.

When is the application deadline?

The application deadline is 31 August 2026.

When does the fellowship begin?

The expected start date is 1 October 2026, or another mutually agreed date with the supervisor.

Who can applicants contact for more information?

Academic inquiries about the project can be directed to Professor Göran Östlin (ostlin@astro.su.se).

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Postdoctoral Fellowship in Astrophysics 2026 Stockholm University Postdoctoral Fellowship Fully Funded Postdoctoral Fellowship Sweden Astrophysics Fellowship 2026 Sweden Research Fellowship James Webb Space Telescope Fellowship JWST Research Astronomy Postdoctoral Position Stockholm University Jobs Haro11 Galaxy Research Lyman Continuum Leaker Study

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Postdoctoral Fellowship in Astrophysics 2027 at Stockholm University | Fully Funded