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PhD student fellowship position at Center for Theoretical Physics Polish Academy of Sciences Warsaw

The Director of the Center for Theoretical Physics PAS announces a competition for oneScholar-PhD Student position at the CTP PAS, within the research Project Weave-UNISONO „Lensing of electromagnetic and gravitational waves”, financed by the National Science Center (GA no. UMO-2024/06/Y/ST2/00190), and within the Geoplanet doctoral school. The project’s leader is dr hab. Mikołaj Korzyński. The research will be conducted in collaboration with the group of Dr. Marius Oancea from the University of Vienna. Application deadline October 15th 2025.

The aims of the project are:

Optical drift effects close to caustics: investigating the effects of lens, observer and source transverse motion in strong gravitational lensing, for objects near caustics, Lensing of gravitational waves by strong gravitational fields: computing lensed gravitational waveforms originating from sources in strong-gravity environments, Computing the effects of propagation of waves in curved spacetimes beyond geometric optics using the Wigner function approach.

The scope of work of the successful Candidates will be pursuing their PhD project at CTP PAS and within the Geoplanet doctoral school. The scope of the project involves:

  • Developing software for raytracing of gravitational waves in strong gravitational fields,
  • Computing the waveforms from binary black hole systems,
  • Theoretical research on wave propagation in curved spacetimes.

Where to apply
E-mail rekrutacja(at)cft.edu.pl

Requirements

  • Research Field Astronomy » Astrophysics
  • Education Level Master Degree or equivalent
  • Research Field Physics » Other
  • Education Level Master Degree or equivalent

Skills/Qualifications

We expect the Candidates to have:

  • MSc in physics, astronomy or compatible,
  • Good programming skills and experience in numerical methods,
  • Independence and creativity in problem solving.

Knowledge of general relativity would be welcome.

Languages ENGLISH
Level Excellent

Please find here full details.

PhD position in gravitational-wave astronomy and massive binary evolution at Radboud University

Join a pioneering PhD project exploring how massive stars evolve into gravitational-wave sources. Combine stellar physics, simulations and cutting-edge data to uncover the origins of black holes and neutron stars, linking theory with the latest discoveries in this rapidly growing field. Application deadline October 31st 2025.

It has been just over a decade since the first detection of gravitational waves, marking the birth of a new field in astronomy. Since then, the number of detections has grown rapidly: from one, to a few, to hundreds, revealing entire populations of gravitational-wave sources. These signals are produced by black holes and neutron stars, the compact remnants of massive stars.

Many questions on how these populations form remain. To solve this puzzle, we must understand how massive stars are born, interact in binary systems, and how they end their lives as black holes or neutron stars. This will be the topic of this PhD thesis.

As a PhD candidate, you will conduct fundamental research on the evolution of massive binary stars, with a special focus on the systems that give rise to gravitational-wave sources.

This theoretical project will be at the intersection of stellar physics, computational astronomy and an unprecedented amount of data driven by observation. You will learn to run simulations on high-performance computing clusters, ranging from broad parameter studies with rapid binary-population synthesis codes to detailed stellar evolution calculations with 1D stellar evolution codes. The models you develop will be directly linked to new and upcoming observations, including the just-released 4th gravitational-wave observations (O4, released in August 2025) and the Gaia DR4 dataset (expected mid-2026).

Your duties as a teaching assistant cover about 10 percent of your work time, spread over the course of the appointment.

Would you like to learn more about what it’s like to pursue a PhD at Radboud University? Visit the page about working as a PhD candidate.
Does this sound like you?

  • You hold a Master’s degree in astronomy/physics or a related field, or you expect to obtain your Master’s degree around the starting date of the appointment.
  • You bring curiosity and enthusiasm, enjoy thinking critically, communicate openly, and take initiative.
  • You are able to work in a team as well as independently.
  • You have excellent writing and verbal communication skills in English.

What we offer you

  • We will give you a temporary employment contract (1.0 FTE) of 1.5 years, after which your performance will be evaluated. If the evaluation is positive, your contract will be extended by 2.5 years (4-year contract).
  • You will receive a starting salary of €3,059 gross per month based on a 38-hour working week, which will increase to €3,881 in the fourth year (salary scale P).
  • You will receive an 8% holiday allowance and an 8,3% end-of-year bonus.
  • We offer Dual Career Coaching. The Dual Career Coaching assists your partner via support, tools, and resources to improve their chances of independently finding employment in the Netherlands.
  • You will receive extra days off. With full-time employment, you can choose between 30 or 41 days of annual leave instead of the statutory 20.

Additional employment conditions

Work and science require good employment practices. Radboud University’s primary and secondary employment conditions reflect this. You can make arrangements for the best possible work-life balance with flexible working hours, various leave arrangements and working from home. You are also able to compose part of your employment conditions yourself. For example, exchange income for extra leave days and receive a reimbursement for your sports membership. In addition, you receive a 34% discount on the sports and cultural activities at Radboud University as an employee. And, of course, we offer a good pension plan. We also give you plenty of room and responsibility to develop your talents and realise your ambitions. Therefore, we provide various training and development schemes.
Where you will be working

Your PhD project will be supervised by Dr. Lieke van Son

(Radboud University) and will be carried out in a highly international setting. Collaboration with international research groups across the globe is expected.

This PhD position is embedded in the Astrophysics Department at the Institute for Mathematics, Astrophysics and Particle Physics (IMAPP) at Radboud University (Nijmegen, Netherlands). We are a very tight-knit and socially active department, currently home to 18 faculty members (junior and senior) and about 65 postdoctoral researchers and PhD candidates. Research at the department covers a broad range of topics, including stellar physics, black hole and accretion physics, gravitational waves, cosmic rays, and instrumentation.

Faculty of Science
The Faculty of Science (FNWI), part of Radboud University, engages in groundbreaking research and excellent education. In doing so, we push the boundaries of scientific knowledge and pass that knowledge on to the next generation.

We seek solutions to major societal challenges, such as cybercrime and climate change and work on major scientific challenges, such as those in the quantum world. At the same time, we prepare our students for careers both within and outside the scientific field.

Currently, more than 1,300 colleagues contribute to research and education, some as researchers and lecturers, others as technical and administrative support officers. The faculty has a strong international character with staff from more than 70 countries. Together, we work in an informal, accessible and welcoming environment, with attention and space for personal and professional development for all.

Please find here full details.

PhD Position at CUHK, Hong Kong

The CUHK, Hong Kong, invites applications for a 4-year PhD position in gravitational-wave and gravitational lensing data analysis, starting Fall 2026. Application deadline: October 15, 2025.

About the Group: The CUHK gravitational-wave group, part of the LVK collaboration since 2016, conducts research on gravitational waves—ripples in space-time that reveal insights into extreme cosmic phenomena. We specialize in connecting gravitational-wave observations with other physics disciplines, leveraging advanced detectors that detect signals weekly. Group website: https://gw.phy.cuhk.edu.hk/

Eligibility: Applicants should have a BSc degree by the start date of the program. International applicants with a first-class honors degree (e.g., minimum GPA 3.5/4.0) from a QS-200 university and demonstrated research experience (e.g., publications, projects) may qualify for the Hong Kong PhD Fellowship Scheme (HKPFS), offering additional stipends and research support. Other applicants are also welcome to apply through standard route.

How to Apply: Submit your CV and statement of purpose via the application form (https://forms.gle/DdBk5JGrAgG39FVP7). Referees should send letters directly to Otto Hannuksela, email: oahannuksela(at)cuhk.edu.hk.

PhD positions in Astronomy and Astrophysics IMPRS in Heidelberg

The "International Max Planck Research School for Astronomy and Cosmic Physics at the University of Heidelberg" (IMPRS-HD) invites applications for its PhD program. The school aims to offer outstanding research and training opportunities with excellent instrumental, observational, and theoretical research facilities at the Max Planck Institute for Astronomy, the Max Planck Institute for Nuclear Physics, the Astronomisches Rechen-Institut, the Landessternwarte Koenigstuhl, the Institute of Theoretical Astrophysics, and the Heidelberg Institute for Theoretical Studies. Application deadline: November 1st 2025.

Main research topics carried out at these institutions are planet and star formation; exoplanets and substellar objects; astrometry; formation, evolution and dynamics of galaxies and supermassive black holes; gravitational lensing; cosmology and structure formation; high energy astrophysics; and state-of-the-art instrumentation for astronomy and astroparticle physics.

The IMPRS-HD is an independent part of the Heidelberg Graduate School for Physics.

Several fellowships are available with 1600-1800 Euro monthly average net income.

Interested students are invited to apply by November 1, 2025, for the academic year starting in September 2026.
An earlier start of the thesis research is possible.

Applicants must have a Master’s degree (or equivalent) in Physics/Astronomy including a corresponding thesis and a very good physics background. Applicants with a 4-yr degree in physics may be accepted conditionally.

Further details on IMPRS-HD and the application process can be found at http://www.imprs-hd.mpg.de/.

IMPRS Office
Email: imprs-hd-application@mpia.de

PhD in Astrophysics at IMPRS on Astrophysics at Ludwig Maximilians University Munich

You want to boost your career in Astrophysics? Then do your PhD in one of the largest centers for Astronomy and Astrophysics in Europe and work with the leading scientists in the field to accelerate your scientific career! The International Max Planck Research School on Astrophysics at the Ludwig Maximilians University Munich (IMPRS on Astrophysics) is soliciting applications for its PhD program.

Located in the beautiful Munich-Garching area in southern Bavaria (Germany), the school offers a unique environment for graduate students due to the presence of four internationally renowned institutes which form the school:

  • The Max Planck Institute for Extraterrestrial Physics (MPE) 
  • The Observatory of the University of Munich (LMU/USM) 
  • The Max Planck Institute for Astrophysics (MPA)
  • The European Southern Observatory (ESO)

IMPRS offers a highly competitive PhD program, including lectures, seminars and a research 
project supervised by leading scientists at one of the participating institutions. 

Course language is English.

Students have access to the world largest ground- and spaced-based observatories and instrumentation operated by the participating institutes as well as to supercomputers for advanced numerical simulations and theoretical studies. Applications for the PhD-program are open to students from all countries.

Successful applicants will get a work contract / fellowship with a monthly income that covers the living costs. We will assist our students with all administrative matters for a smooth on-boarding.

This means “Concentrate on your research — we do the rest!” For more details see: https://www.imprs-astro.mpg.de/ 
     
The closing date for applications for the program starting in September 2026 is November 1,  2025.

If for any reason you have difficulty meeting the deadline, please inform us in advance and we will extend it upon request.

Compensation and Benefits

Compensation Type

Salary

Currency

365

Compensation Range

$25USD to $27USD

Included Benefits

  • Medical insurance (including basic dental insurance) is covered by the position. 
  • Child allowance, if applicable
  • Household allowance, if applicable
  • Reimbursement of moving cost (to a certain amount)
  • Access to free German language classes
  • Support in all administrative matters such as visa, housing etc.

Compensation Notes

The above mentioned annual salary amounts are net pay.

Pay and benefits vary between the four participating institutes. Students earn about 2.000 – 2.300 EUR  per month net (about 2.350 -2.700 USD), depending on the affiliated instiute, year of study, and martial / family status.

The exact details can be found on our website: www.imprs-astro.mpg.de

Application Details

Application Instructions

We will only accept applications via our application platform, which will reopen for this call in August 2025.
Application deadline is November 1, 2025 for the program starting in September 2026.

In the application form, you must provide the contact details of 1-3 referee(s), who will upload a reference letter in the applicant portal. The deadline for submitting the letters is also November 1, 2025.

Prerequisite for application is a Master’s degree in physics, astrophysics, astronomy or a comparable subject with a final grade of very good to good.
Very outsanding students can apply for the fast-track PhD with an excellent Bachelors degree.
You can find more information on the admission requirements on our website under “Application” – “Who qualifies”

Please find here full details.

PhD position in Theoretical Particle Cosmology at KIT

We seek a qualified physics graduate to join as a PhD candidate at the Karlsruhe Institute of Technology (KIT). The successful candidate will join Dr. Kim Berghaus' research group to work on projects related to Theoretical Particle Cosmology, on topics of the intersection of particle physics and theoretical/observational cosmology such as inflation, dark energy, and the Hubble tension. The position is for 3 years with a flexible starting date from February 1st, 2026 to May 1st, 2026. Application deadline on October 3, 2025.

This position is part of the Emmy Noether Research Group “Novel Signatures of Relativistic Particle Production in Cosmology”. The group investigates the impact of fundamental interactions between scalar fields and other light degrees of freedom on cosmological observations.

Your Profile:

  • Master’s degree in Physics (to be completed by the starting date).
  • Strong interest in cosmology and (astro)particle physics.
  • Some prior research experience in cosmology or particle physics is highly desirable.

We Offer:

  • 3-year contract (salary level E 13 TV-L, 75%).
  • Collaborative and supportive work environment.

Application Procedure:

  • Motivation letter (max 1 page).
  • Curriculum Vitae.
  • Recent transcript of study records.
  • 1-3 Recommendation letters (to be submitted by the reference writer).

Motivation letter, CV and transcript of records should be sent as a single PDF to kberghaus.kit.phys.applications(at)gmail.com.

The review of applications will start on October 4th, 2025.

Please find here details.

PhD Position in Gravitational Waves at Nikhef

Nikhef s expanding the team working on the Einstein Telescope and the Virgo detector, and invite applications for one PhD position and one postdoc position in the framework of optical sensing and modeling.

The PhD position will focus on the development and application of the modelling framework Finesse (https://finesse.ifosim.org/). Finesse is an open source code for modelling laser interferometers for precision experiments and we deliver the software to the large scientific projects Virgo, LIGO and the Einstein Telescope (ET). To keep up with the more advanced instrumentation in ET we are extending and enhancing Finesse. You will make significant contribution to the Python code and you will work as a member of the international design team that defines the shape and performance of the most advanced observatory for gravitational waves. Application deadline: September 15th, 2025.

The group:
The Gravitational Wave group consists of about 20 staff scientists, 20 postdoctoral researchers, and 30 PhD candidates. The group is engaged in gravitational-wave observational science through active participation in the VIRGO and LIGO interferometer collaborations, and in instrumentation R&D with a particular emphasis on components for the VIRGO detector, such as advanced seismic isolation and suspension systems, advanced optical sensors (phase cameras and quadrant photodiodes). The group is leading the development of Finesse, a tool widely used to design and model gravitational wave detectors. In this context it is deeply engaged in the efforts of implementing a complete model of the Virgo interferometer and of designing the future Einstein Telescope.

Nikhef has established ETpathfinder, a dedicated R&D infrastructure located in Maastricht, aimed at developing and testing key technologies to enable the low-frequency sensitivity of third-generation detectors like the Einstein Telescope (ET).

The group also plays a central role in the preparatory efforts for the Einstein Telescope. The Netherlands, in collaboration with Belgium and Germany, is coordinating a transnational initiative to propose the EMR (Euregio Meuse-Rhine) region as a candidate site for the ET.

Offer

The successful candidate will be employed by the NWO-I foundation for a period of 4 years. The candidate will be embedded in the Nikhef Gravitational Wave group and stationed in Amsterdam, collaborating closely with colleagues in Maastricht. The salary is competitive, and the conditions of employment (https://www.nwo-i.nl/en/employees/) are excellent.

Requirements:

  • A Master’s degree in physics, optics, computer science, or a closely related field.
  • An interest in computational modeling.
  • Good knowledge of the Python programming language, the knowledge of C or Cython will be considered an asset.
  • Working knowledge of the Linux, Windows (and Mac) operating system.
  • The ability to collaborate and communicate well in English.

Application and Further information:
Qualified applicants are encouraged to apply by filling the application form below. Please be prepared to upload a curriculum vitae and a motivation letter, and have the email addresses of at least one referent ready, who is willing to send a letter of recommendation on your behalf. The deadline for the application is September 15th, 2025. Anyway, the positions will be filled as soon as possible. For further information fell free to contact either Andreas Freise (a.freise(at)nikhef.nl) or Anna Green (agreen(at)nikhef.nl).

Please find here full details.

PhD position on Teaching Einsteinian Physics at Schools, University of Western Australia

The Einstein-First project in the university of Western Australia is seeking PhD and Masters students with a background in modern physics (including quantum physics and relativity), strong interest in science communication, experience in science teaching and aptitude in quantitative and qualitative data analysis. Closing date: December 1st 2026.

Please find here full details and how to apply.

PhD opportunities at the Institute of Space Sciences (ICE-CSIC & IEEC)

Possibility of pursuing a PhD in gravitational wave physics at the Institute of Space Sciences (ICE-CSIC) in Barcelona [see a description below] through the: Doctoral INPhINIT Incoming fellowship program of the LaCaixa Foundation. Application deadline: January 23rd, 2025, at 2 pm CET.

Candidates must not have resided or carried out their main activity (work, studies, etc.) in Spain for more than twelve months in the three years immediately preceding the closing date of the call.

The ICE-CSIC, as a research centre accredited with the Spanish Seal of Excellence María de Maeztu will support applications of interested candidates to work in any aspect of gravitational wave astronomy, from instrumentation to theory. ICE members participate in LISA, LVK, and ET.

Contact: Carlos F. Sopuerta (carlos.f.sopuerta(at)csic.es), Sascha Husa (sascha.husa(at)csic.es), Miquel Nofrarias (nofrarias(at)ice.csic.es)

Please find here full details.

ERC-funded Postdoc and PhD positions on gravitational-wave theory, source modeling, and science interpretation at the MPI for Gravitational Physics in Potsdam

The "Astrophysical and Cosmological Relativity" (ACR) department at the Max Planck Institute for Gravitational Physics (Albert Einstein Institute, AEI) in Potsdam Science Park announces the opening of several Ph.D. students and postdoctoral appointments in gravitational-wave theory, source modeling, and science interpretation. Successful candidates will join the GWSky project, which an ERC Synergy Grant  has recently funded. We are particularly interested in hiring creative and highly motivated candidates who can work collaboratively and independently in a vibrant, welcoming, and synergistic group. The deadline for full consideration is December 6, 2024.

The ERC-funded project called “Making sense of the unexpected in the gravitational-wave sky (GWSky)” is led by PIs Alessandra Buonanno, head of the ACR department, Enrico Barausse (SISSA, Trieste, Italy), Zvi Bern (University of California, Los Angeles, US), and Maarten van de Meent (Niels Bohr Institute, Copenhagen, Denmark). Given the synergistic aspect of the GWSky project, we anticipate that for a few postdoctoral scholars, there will be the opportunity to spend two years at the AEI and the subsequent two years in another node. One of the supervisors of the Ph.D. students at the AEI may be located in another node.

The aim of the GWSky project is to use gravitational-wave measurements by existing and future observatories on the Earth and in space as precision laboratories for fundamental physics, cosmology, and astrophysics. This includes the current LIGO-Virgo-KAGRA detectors, as well as the future ground-based observatories Cosmic Explorer and Einstein Telescope, and the space-based detector LISA. By leveraging the PIs and their groups’ expertise, the GWSky project aims to develop a groundbreaking framework capable of solving the highly nonlinear equations by Einstein’s General theory of Relativity, creating waveform models with unprecedented accuracy, and translating these results into practical tools for interpreting the data.

As a consequence, we are looking at candidates in the following research areas: post-Minkowskian formalism, scattering amplitudes, gravitational self-force, post-Newtonian theory, effective-one-body formalism, numerical-relativity surrogate models, methods to accelerate waveform generation, numerical-relativity simulations in General Relativity and alternative theories of gravity, environmental effects for binary systems, tests of General Relativity, gravitational-wave data analysis and machine learning.

To apply, please submit your application via our job portal
for the postdoctoral positions here.
for the PhD positions here.

You will be asked to upload a cover letter, curriculum vitae, list of publications and a statement of past and future research activities of not more than 3 pages. Ph.D. applicants will also be asked to upload their university transcripts and Master thesis (if applicable). Applicants will need to indicate the names of three referees for recommendation letters. Please Register an account with our job portal and fill in the contact information for the referees well before the deadline, so that reference letters can be received in time. Referees will receive an email with instructions on how to upload their letters. In case of technical problems with the application form, please contact jobs(at)aei.mpg.de.

The four nodes of GWSky will have positions in a variety of subdisciplines that feed into precision theoretical studies of gravitational waves. Those interested in potential positions at other nodes may follow the links:

Candidates are encouraged to apply as soon as possible. The deadline for full consideration, including receipt of reference letters, is December 6, 2024. The anticipated start date of the positions is Fall 2025. Applications will be considered until all positions are filled.

The salary and social benefits (e.g., health insurance) are based on the collective labor agreement “TVöD Bund” for the German public sector, usually at pay grade E13 (if the qualifications according to TVöD are met). In case an offer is made, a projection of the gross and net salary based on the TVöD regulations will be prepared.

The Max Planck Institute for Gravitational Physics is an equal opportunity employer and is committed to providing employment opportunities to all qualified applicants without regard to race, color, religion, age, gender identity, sexual orientation, or national origin. The Max Planck Society is committed to increasing the number of individuals with disabilities in its workforce and, therefore, encourages applications from such qualified individuals. The AEI and the Max Planck Society welcome persons with diverse backgrounds, experiences, and ideas who embrace and value diversity and inclusion (Code of Conduct). The institute promotes a healthy work-life balance by offering all employees a family support service, cooperation with a nearby international kindergarten, and an in-house parent-child office and nursing room.

For further information, please contact acr-jobs(at)aei.mpg.de.

Please find here full details.