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PhD Position in Theoretical Cosmology at University of Groningen

Applications are invited for a PhD position under the supervision of Ema Dimastrogiovanni, starting in Fall 2026. The research will focus on cosmic inflation, with applications to primordial magnetic fields and their cosmological signatures. The position is part of the NWO-XL funded "Magnetic Universe" Consortium and is hosted at the Van Swinderen Institute for Particle Physics and Gravity at the University of Groningen. Application deadline: January 16th 2026.

Interested candidates should submit the following application material: – CV – short motivation letter – full academic transcripts – grades scale explanations – a minimum of 2 reference letters – preprint of publications (optional)

Note: please DO NOT send application material or expressions of interest by email, only use contact email for questions about the position.

Please find here full details.

PhD positions at the Charles University in Prague

The Faculty of Mathematics and Physics of the Charles University in Prague has opened new PhD positions. Some of the topics offered have a direct connection to LISA science, including the project on waveform modeling and probing black hole physics using gravitational waves led by myself and Petr Kotlařík. Applications will open 15 December 2025 and close 15 January 2026, and the positions start on 1 October 2026.

The successful applicant will be a student of the Charles University while doing cutting-edge research at either the Charles University or the Czech Academy of Sciences. The positions are fully funded for the standard duration of 4 years with a salary level determined by Czech law.

For the list of projects, details of the application procedure, and more, see this link.

Positions in GW lensing at IFT Madrid

We invite applications for PhD and Postdoctoral positions at the Instituto de Física Teórica (IFT UAM–CSIC, Madrid) in the areas of gravitational waves, gravitational lensing, and fundamental physics. Positions are funded by the ERC Consolidator Grant GLOW, CSIC-MAX, and Atracción de Talento programs. Starting date is October 2026 or later. 

Successful candidates will work with Miguel Zumalacárregui (joining IFT in Summer 2026). Research topics include:

  • Wave-optics phenomena in gravitational lensing
  • Searches for lensed gravitational waves (data analysis, machine learning…)
  • Gravitational lensing of stars by binary black holes
  • Tests of dark matter, dark energy and modified gravity

We are looking for creative and highly motivated individuals with interest or experience in cosmology, gravitational lensing, gravitational waves, compact-object astrophysics, data analysis, and/or computational methods. Expertise in these topics is not a prerequisite: candidates with strong motivation and willingness to acquire the relevant skills are encouraged to apply.

IFT is a Severo Ochoa Center of Excellence with a vibrant international community, active visitor programs, and strong research in cosmology, gravitation, high-energy and astroparticle physics. The group is involved in the Euclid and LISA missions and maintains collaborations with AEI (Potsdam), IAS (Princeton), Oxford, NBI Copenhagen, and UC Berkeley.

IFT is an equal-opportunity employer. Applications from women and underrepresented groups are strongly encouraged.

POSTDOC POSITIONS:

Application link: https://calls.ift.uam-csic.es/convocatoria/NTY=

We seek creative and independent researchers with experience in gravitational waves, gravitational lensing, cosmology, astrophysics, or related fields. Applicants must hold a PhD in Physics (or equivalent) by the starting date. Positions are typically 2–3 years with competitive salary, travel funding, and support for collaboration visits.
Review of applications will begin on December 15 and continue until the positions are filled.

PhD POSITIONS:

Application link: https://calls.ift.uam-csic.es/convocatoria/NTk=

Applicants must hold, or be close to completing, a Master’s degree in Physics or a closely related field, as required for enrollment in the UAM PhD program and for Spanish predoctoral contracts. Students will have opportunities to develop independent research directions and participate in international collaborations.
Review of applications will begin on January 10th and continue until the positions are filled.

Please feel free to distribute this announcement.

For inquiries, contact: miguel.zumalacarregui(at)aei.mpg.de

Foundation Models in Astrophysics and Particle Physics (SciFM) in Aachen, Heidelberg, Hamburg and Munich

We seek four postdoctoral research scientists and eight doctoral researchers to join a newly established joint collaborative project Foundation Models in Astrophysics and Particle Physics (SciFM) funded by the Federal Ministry of Research, Technology and Space (BMFTR). The goal of SciFM is to develop large-scale foundation models, aiming for powerful, interpretable and open-access models to answer fundamental scientific questions in astrophysics, particle physics and cosmology. 

We offer an exciting multidisciplinary collaborative network which includes researchers from astrophysics, cosmology and particle physics in Aachen, Heidelberg, Hamburg and Munich. The selected candidates will work closely with all team members across the participating institutions. Application deadline: December 19th 2025.

Postdoctoral positions:

The postdoctoral researchers (full-time, TV-L E13 public service pay grade) will work on conceptual and methodological topics that cut across astrophysics, particle physics and cosmology. Using shared machine-learning approaches, they are expected to build bridges between the physics domains, develop cross-disciplinary methodologies, and help drive the collaboration and exchange between the participating sites.

Doctoral researcher positions:

The doctoral researchers (75% TV-L E13 public service pay grade) will work on a domain-specific research project (astrophysics, particle physics or cosmology), typically embedded in one host institution. At the same time, they will frequently collaborate with other doctoral researchers across sites and domains, forming cross-disciplinary teams within the SciFM network.

All positions are available immediately and are funded for 3 years.

Locations

The principal investigators of the SciFM project, their research topic and host institutions are: 

  • Prof. Gregor Kasieczka (particle physics; gregor.kasieczka@uni-hamburg.de) and Prof. Luisa Lucie-Smith (cosmology; luisa.lucie-smith@uni-hamburg.de) at Hamburg University
  • Dr. Caroline Heneka (cosmology; heneka@thphys.uni-heidelberg.de) and Prof. Tilman Plehn (particle physics; plehn@uni-heidelberg.de) at Heidelberg University
  • Prof. Daniel Grün (cosmology; daniel.gruen@lmu.de) at LMU, Munich and Prof. Lukas Heinrich (particle physics; l.heinrich@tum.de) at TUM, Munich
  • Prof. Michael Krämer (particle physics; mkraemer@physik.rwth-aachen.de) and Prof. Philipp Mertsch (astrophysics; pmertsch@physik.rwth-aachen.de) at RWTH Aachen University

Interested doctoral and postdoctoral candidates are invited to express interest in one or more of the host institutions, principal investigators and fields of research (astrophysics/particle physics/cosmology). Preference will be given to postdoctoral candidates with a background in cosmology at the Hamburg and Heidelberg locations, and to those with a background in particle physics at the Munich and Aachen locations. In all cases, the hired researchers will be part of the larger SciFM team and will participate in regular exchanges among the host institutions. 

We value and actively support equality, diversity and inclusion and strongly welcome applications from women and underrepresented minorities.

Qualifications

Candidates should possess good communication skills in English and the ability to work both independently and collaboratively in an interdisciplinary, international environment.

Postdoctoral positions:

Candidates should have a PhD in either particle physics, astrophysics or cosmology; prior experience in programming, and developing and applying statistical and machine learning models will be highly valued. German language skills are not required. 

Doctoral positions:

Candidates should have a Master’s Degree in physics or related fields and an interest in and/or prior experience with programming and machine-learning techniques. German language skills are not required. 

Included benefits:

Pay and benefits are commensurate with the public sector contract (TV-L, E13).

Application instructions

All application materials must be combined into one single PDF file and uploaded via the respective SciFM application portal. Please do not send application documents or reference letters by email.

The single PDF file should contain (for both postdoctoral and doctoral applicants):

  1. Curriculum vitae
  2. Publication list (optional for doctoral applicants)
  3. Cover letter
  4. Research statement (up to three A4 pages, 11pt font)
  5. – For doctoral applicants: include past research experience and future plans
  6. – For postdoctoral applicants: include past research, future directions, and methodological interests

Letters of recommendation: Applicants should list the contact information of at least two referees in the application form. We will contact these to provide a letter by the application deadline. Referees should name their letters using the following format: “Recommendation APPLICANT-LASTNAME REFEREE-LASTNAME”

Submission portals:

  • Postdoctoral researchers:

Fill the following application form:

https://cloud.physik.lmu.de/index.php/apps/forms/s/DDHbWcH9K8d8EdGeebNR7Npo

Upload your single-PDF application via:

https://cloud.physik.lmu.de/index.php/s/nZnaTgWBKPXX3Hm

  • Doctoral researchers:

Fill the following application form:

https://cloud.physik.lmu.de/index.php/apps/forms/s/oDcAHa9ayWyrGLQ3cYCLkcbz

Upload your single-PDF application via:

https://cloud.physik.lmu.de/index.php/s/KgfqAY5KLStL7nG

Deadline for all applications: 19 December 2025

Late applications will be accepted until the positions are filled.

For further information, please contact Prof. Dr. Luisa Lucie-Smith (luisa.lucie-smith(at)uni-hamburg.de) or any of the other PIs listed above.

Please find here full details.

PhD Studentships at the University of Edinburgh

The Institute for Astronomy (IfA) is located at the historic and beautiful Royal Observatory Edinburgh on Blackford Hill and makes up approximately one third of the School of Physics and Astronomy at the University of Edinburgh. PhD stipends are tax-free, and full-time students are typically exempt from council tax. Each year, the IfA admits a new cohort of about 10 PhD students from around the UK and the world. We are now accepting applications for admission in September 2026. Application deadlines from December 5th 2025 to January 5th 2026.

The IfA is committed to advancing equality and diversity, welcoming applications from everyone irrespective of gender, age, (dis)ability, race, nationality, carer status, religion or belief, and sexual orientation. We aim to ensure our culture and systems support flexible and family-friendly working. We encourage all qualified applicants to apply for our places.

Our PhD projects cover topics ranging from cosmology/LSS, galaxy formation/AGN, the Milky Way, exoplanets, and the solar system; with techniques including observation, instrumentation, theory, and simulations. On our project webpages, you can find descriptions of all projects on offer, as well as some videos from the PhD supervisors.

To apply, you will submit a 1-page anonymized form where you briefly share information about your research experience and academic preparation. Detailed steps on how to apply are given here:

https://ifa.roe.ac.uk/phds-jobs-fellowships/phd-studentships

In order for your application to be given full consideration for one of our regular funded places, it should be received by the deadline of 5th January 2026.

In addition, the following studentships have special application procedures and deadlines:

  • Career Development Scholarship – for students with Black heritage, including mixed Black background, UK and international students. Deadline: 24th November 2025
  • Bell Burnell Graduate Student Fellowship – for students from underrepresented groups in physics, including UK and international students. Deadline: 5th December 2025

Please find here full details.

Two PhD Opportunities: Stellar Explosions and Asteroseismology in Binary Systems at KU Leuven

Two PhD positions to join the new research team StarHearts of Prof. Eva Laplace at the Institute of Astronomy, KU Leuven, Belgium.
When stars end their lives, their hearts continue to exist in a different, exotic form, known as a compact remnant: black holes, neutron stars, or white dwarfs. Understanding the exact origin of these objects is one of the most pressing scientific questions in astrophysics at this time. With the discovery of gravitational waves (GWs), we have a new way to study these extreme objects. To make breakthroughs in understanding the properties of stellar remnants and the GWs they generate, it is crucial to study the binary stellar hearts and the core-collapse process that form them. The application should be received by December 16th, 2025.

PhD project 1 – Investigating the Explosion and Implosion Signatures of Binary Stars

The aim of this PhD project is to characterize the observable explosion and implosion signatures of stars that have interacted in a binary star system. The ultimate goal of this project is to develop theoretical models to interpret the observations of explosive transients (in particular stripped-envelope supernovae) and connect these back to the properties of the stellar hearts that generate them.

PhD Project 2 – Characterizing the Heartbeats of Binary Evolution Products

The hearts of stars that interact in binary systems are expected to be systematically different from those of single stars. In particular, binary stars grow cores of different masses and different chemical composition, and have different interior mixing and rotation behaviors. Therefore the observable oscillations – or “heartbeats” – of such stars, from internal pressure and gravity waves, are expected to be systematically different. The ultimate aim of this project will be to characterize the observable asteroseismic signals of binary evolution products and to obtain observational constraints on the physical properties of the hearts of stars that form gravitational-wave sources.

More information on https://fys.kuleuven.be/ster/vacancies/vacancies#PhD_StarHearts

PhD position “Signatures of beyond-standard-model physics in neutron star mergers” in Hamburg

The project will explore potential signatures of beyond standard model physics in the merger of two neutron stars. The ideal candidate has knowledge of general relativity, hydrodynamics, particle physics and computational physics with compiled programming languages. 
The application deadline is December 22, 2025.

For more information please contact  Stephan.Rosswog(at)uni-hamburg.de and/or Samuel.Witte(at)physics.ox.ac.uk

The application has to be submitted via the application system of the University of Hamburg, please see https://www.uni-hamburg.de/stellenangebote/ausschreibung.html?jobID=7bd2c136b39027d4ff9feefaa970abcca8ad50b5 for more information.

PhD Studentships in Gravity at University of Nottingham

We invite applications for PhD positions in gravitational physics at the School of Mathematical Sciences of the University of Nottingham. We are seeking applicants in several areas of research listed below, with one scholarship reserved for AI for gravitational waves. Application deadline: December 20th, 2025.

Potential supervisors include Dr Miguel Bezares (numerical relativity), Dr Stephen Green (black holes, AI for gravitational waves), Prof Kirill Krasnov (mathematical relativity, differential geometry), Prof Jorma Louko (black holes and quantum field theory), Dr Laura Sberna (gravitational waves including astrophysics, black holes), and Prof Thomas Sotiriou (gravitational waves, black holes, and alternative theories). A complete list of projects is available at https://www.nottingham.ac.uk/Mathematics/Study/Research/PhD-research-opportunities/PhD-research-projects.aspx.

Successful applicants will also join the Nottingham Centre of Gravity (NCoG), which unites gravitational physics expertise across the School of Mathematical Sciences and the School of Physics and Astronomy. The Centre comprises 17 permanent staff, as well as typically 7-8 postdocs and 25 students. Staff are active members of the LIGO, LISA, and ET collaborations, providing ample opportunities for international collaboration and impact.

For more information and to apply, see https://www.nottingham.ac.uk/pgstudy/course/research/mathematics-phd. Please apply by 20 December for full consideration.

PhD positions in “Gravity at the Extreme: from Theory to Observation” at the Max Planck Institute for Gravitational Physics in Potsdam

The Max Planck Institute for Gravitational Physics (Albert Einstein Institute, AEI) in Potsdam, Germany, announces the opening of several PhD positions at the IMPRS “Gravity at the Extreme: from Theory to Observation”. We are particularly interested in hiring creative, proactive and motivated candidates who flourish at working in a vibrant, interdisciplinary and synergistic group. Successful candidates will join one of the scientific departments at the AEI in Potsdam, either the “Astrophysical and Cosmological Relativity” (ACR) or the “Computational Relativistic Astrophysics” (CRA) department. 

The International Max Planck Research School (IMPRS) is comprised of the scientific departments and groups of the AEI at its locations in Potsdam and Hannover, the University of Potsdam (UP), the Humboldt University (HU) in Berlin, and the Leibniz University in Hannover (LUH). Our graduate students are exposed to a variety of research topics and have access to a world-wide research network, including international partner universities (University of Maryland and the Yukawa Institute for Theoretical Physics at Kyoto University). Our graduate students also have the opportunity to join the LIGO Scientific Collaboration and the LISA Consortium through the ACR-division’s membership, and the Einstein Telescope Collaboration through the AEI-UP membership. For an overview of the IMPRS, its research groups, and the application procedure, please visit the IMPRS website.

The ACR and CRA research divisions at the AEI in Potsdam operate three high-performance compute clusters to model gravitational-wave sources (binary black holes, neutron star binaries, and stellar collapse of massive stars), electromagnetic counterparts of gravitational waves, high-energy astrophysical phenomena, and to carry out waveform development, and data analysis of gravitational waves observed by LIGO and Virgo detectors.

Research Topics and research environment:
PhD theses can cover a broad spectrum of topics in gravitational-wave astronomy, high-energy astrophysics and fundamental physics, such as: 

  • analytical modeling of gravitational dynamics and radiation (within post-Newtonian theory, post-Minkowskian theory, gravitational self-force, black-hole perturbation theory, and effective-one-body theory),
  • numerical-relativity, most notably simulations of compact objects in general relativity and alternatives,
  • interpretation and analysis of data from gravitational-wave detectors on the ground (LIGO, Virgo and KAGRA),
  • development of pipelines and data-analysis methods for future detectors in space (LISA) and on the ground (Einstein Telescope),
  • acceleration techniques for gravitational-wave inference, including machine learning,
  • cosmography with gravitational waves (including dark energy, dark matter, gravitational lensing),
  • tests of gravity in the strong-field and highly dynamical regime
  • modelling neutron star mergers as high-energy phenomena,
  • modelling electromagnetic counterparts of gravitational waves,
  • exploring neutron-star equation of state,
  • exploring nucleosynthesis,
  • stellar collapse to a black hole and a neutron star, and
  • modelling gamma-ray bursts.

Successful applicants will conduct their research projects at the AEI in Potsdam, and they will have to enrol and receive their PhD degree from either the University of Potsdam or the Humboldt University in Berlin. The expected duration of the PhD program is three to four years. Applicants are required to have a Master degree by the start of the PhD program.

We offer:

  • A vibrant research environment with access to a world-class research facilities and cutting-edge research projects
  • A structured English-language graduate program
  • Fully funded positions, no tuition fees, and additional funding for conferences and professional development, more info on financial aspects, see here.
  • Individual supervision and mentoring by research scientists who are leaders in their respective fields
  • An excellent working environment with various on-campus support (computing facilities, PhD representatives, language courses, residence permit and visa support, children’s day care, etc.), located just 30 minutes from the city center of Berlin

Application Process:
In order to apply, please fill in this form.

You will be asked to upload a cover letter, curriculum vitae, university transcripts, a statement of research interests (no more than three pages), a list of publications (if applicable), and your Master thesis (if applicable). The statement of research interests should describe the student’s past research experience, future research interests and how they relate to the IMPRS’s scientific mission.

Applicants also need to indicate the names of three referees for recommendation letters. Referees will be notified by email on how to upload the letters. More information on the preparation of the documents can be found in the IMPRS’ FAQ section.

Candidates are encouraged to apply as soon as possible. The deadline for full consideration is December 19th, 2025.

Please find here full details.

Multiple funded PhD positions available at the U²GRC

Multiple funded PhD positions are available at the UMass Dartmouth and University of Rhode Island gravity research group. 
We seek candidates for multiple, fully-funded PhD positions at UMass Dartmouth and the University of Rhode Island in the broad area of gravitational-wave science.

Gravitational physics researchers at both universities have recently established the UMass-URI Gravity Research Consortium (U2GRC) — a joint gravity research group. Several new researchers have been hired by both universities, including Drs. Aidan Chatwin-Davies (URI), Sarah Caudill (UMassD), Derek Davis (URI), Deborah Ferguson (URI), Michael Puerrer (URI) and Vijay Varma (UMassD). This is in addition to others who were already present, i.e. Drs. Rob Coyne (URI), Scott Field (UMassD), Bob Fisher (UMassD), Doug Gobeille (URI), and Gaurav Khanna (URI/UMassD). Most are members of the LIGO-Virgo-KAGRA Collaboration, LISA Consortium and the SXS Collaboration. U2GRC currently has over 20 PhD students working on various different aspects of gravitational-wave science. The group has Zoom meetings twice a week and meets in person monthly. Course exchange agreements have been formalized between the two universities to make it seamless for U2GRC students to take classes being offered at either campus. Additional agreements underway include joint student advising, collaborative grant funding, and extensive computational resource sharing.

We are particularly interested in applicants interested in working in these specific research areas: gravitational-wave data analysis and detector characterization, data driven surrogate models, numerical relativity, black hole perturbation theory, and quantum information / gravity. Please apply by February 1st, 2026 for best chances of receiving funding.

Please reach out with any questions to Drs. Scott Field (UMass Dartmouth) and Gaurav Khanna (URI) by emailing u2grc-faculty(at)googlegroups.com. Candidates are welcome to apply to either or both universities, but may wish to consult Drs. Field and Khanna first on the best match for their interests and goals. To find out more about the PhD programs at both universities: UMass Dartmouth Interdisciplinary PhD (Computational Science option) and URI Physics PhD Program.

Please find here details.