CfA Prize Postdoctoral Fellowship 2027: $84,600 Stipend and Research Support in Astrophysics

CfA Prize Postdoctoral Fellowship 2027: $84,600 Stipend and Research Support in Astrophysics

The CfA Prize Postdoctoral Fellowship is a three-year research opportunity at the Center for Astrophysics | Harvard & Smithsonian for an early-career scientist ready to develop an independent astrophysics programme. The 2027 fellowship is open now, and applications are due by 5 p.m. Boston time on October 15, 2026. The appointment is scheduled to begin on September 1, 2027.

The fellowship is designed for researchers whose work falls within theory, observation, instrumentation, engineering, or laboratory and experimental astrophysics. It is broad in scientific scope, but it is not a general postdoctoral placement. The Center for Astrophysics expects applicants to explain what they would contribute to its research community and why the proposed work belongs at the CfA rather than at any well-equipped observatory or university.

The financial package is substantial: an $84,600 stipend with an annual cost-of-living adjustment, an $18,000 research budget for each year, health and dental benefits for the Fellow and eligible dependents at no cost to the Fellow, and a one-time relocation allowance. Fellows receive a three-year appointment, with the third year contingent on satisfactory progress. They also receive access to the facilities, scientists, engineering teams, observing programmes, mentoring relationships, and professional activities of the CfA’s two collaborating observatories.

Key details at a glance

The amount shown here is the published stipend and annual research budget. The official page does not state the value of the relocation allowance, and it does not describe the cost-of-living adjustment formula. Applicants should use the published figures as a firm baseline and ask the Fellowship Coordinator about any budget question that affects a move or a multi-year financial plan.

What the fellowship offers

The central benefit is research independence in a large, highly connected astrophysics institution. Fellows are encouraged to develop their own scientific direction while collaborating with researchers at the Smithsonian Astrophysical Observatory and Harvard College Observatory. The CfA’s work spans theoretical astrophysics, observational astronomy, laboratory science, technology development, engineering, Earth and planetary science, and education. That range can support a focused research programme without forcing every applicant into the same scientific model.

The fellowship page lists access to substantial observing and technical resources. Fellows can propose for CfA-allocated observing time on the MMT in Arizona, the Magellan Telescopes in Chile, and the Submillimeter Array in Hawai’i. The broader research environment includes ground- and space-based programmes involving facilities such as Chandra, the Event Horizon Telescope, the James Webb Space Telescope, Hubble, TESS, the Parker Solar Probe, and ALMA. Access is an opportunity to develop a credible plan; it is not a promise that every proposal will receive observing time or instrument access.

Researchers working on instrumentation or experimental astrophysics can also benefit from the CfA’s engineering and laboratory capabilities. The Center says Fellows may develop instrumentation with experienced technical and engineering staff. Researchers in data-intensive fields can connect with established artificial-intelligence and data-science programmes. The practical question is not how many facilities can be named in an application. It is which one or two collaborations, datasets, instruments, or observing programmes are necessary for the proposed work.

Professional development is part of the appointment. Fellows can participate in colloquia, journal clubs, divisional events, workshops, mentoring, and education and outreach. The page also describes opportunities to co-advise graduate and undergraduate students, propose as a principal investigator for external support, and organize workshops or topical discussions. These activities are useful for someone building an independent career, but the application should keep the research programme at its center.

Who is a good fit

The most direct fit is a researcher who can show a clear scientific identity and is ready to move from supervised postdoctoral work toward an independent programme. The field definition is intentionally broad, so a good fit might be a theorist studying compact objects, an observer using new surveys, an instrumentation researcher designing a detector, an engineer developing telescope hardware, or a laboratory astrophysicist testing materials and processes relevant to space science.

The CfA expects demonstrated promise rather than a fixed list of publications or a particular nationality. The official description says the fellowship is open to qualified applicants who are English-speaking citizens of any nation. A candidate should therefore explain the scientific importance of the work, the part they personally led, and the next questions that become possible at the CfA.

Fit also depends on host planning. Only Smithsonian Astrophysical Observatory scientists can officially host CfA Postdoctoral Fellows for administrative purposes. The CfA encourages collaboration across the Center, but an applicant should identify relevant SAO scientists before writing the final research overview. A plausible connection may involve a scientist, division, facility, instrument, archive, or interdisciplinary group. A list of famous projects without a host conversation will not demonstrate that the proposed work can start productively.

Eligibility and the experience calculation

Applicants must be within 24 months or less of equivalent full-time post-Ph.D. research experience at the fellowship start date of September 1, 2027. The CfA directs applicants to use the Ph.D. defense date, or the date the thesis was accepted, when that date and the formal award date differ. The rule is based on equivalent full-time research experience, so it is important to calculate the period carefully rather than relying only on the date printed on a diploma.

The Center says time taken for family leave, career duties, illness, or other career gaps does not count toward the 24-month full-time-equivalent research limit. Those periods should be noted in the curriculum vitae. A concise explanation is enough: identify the dates, state why the period should be excluded, and make clear how the remaining research time was counted.

The public page does not list a citizenship restriction beyond describing the opportunity as open to English-speaking citizens from any nation. Applicants should also check their immigration and work authorization situation with the CfA if they need a specific visa or have an unusual status. The fellowship is based at the CfA in Cambridge, Massachusetts, and the page does not describe it as a remote appointment.

The fellowship cannot be combined with other fellowships. That does not mean an applicant should avoid applying elsewhere, but it does mean a selected Fellow will need to understand the financial and appointment terms before accepting. The benefits package is described as funding for health and dental benefits rather than as a general employee-benefit statement, so ask the Fellowship Coordinator about coverage details for a particular family situation.

Timeline for the 2027 appointment

Applications opened on August 17, 2026. The deadline is October 15, 2026, at 5 p.m. Boston time. Only online applications submitted through AJO are considered, and the programme name in the system is “CfA Prize Postdoctoral Fellowship.” A submission started in another system or sent by email should not be treated as complete.

References are not submitted at the initial stage unless the Fellowship Coordinator contacts the referee. The CfA says references will be contacted by November 5, 2026, and letters are due to the Coordinator by November 17 at 5 p.m. Eastern time. This means applicants should still speak with potential referees early, but should not ask them to send letters through an unrequested route.

The selection decision is expected by December 15, 2026. The fellowship starts on September 1, 2027, and runs for three years, with the third year dependent on satisfactory progress. That gap gives a selected candidate time to plan relocation, complete the relevant degree requirements, and refine the project with the host. It is also a reason to settle the host conversation before the application deadline rather than waiting for an offer.

Required application materials

The CfA requests a current curriculum vitae that includes an ORCID identifier and up to three keywords from the Unified Astronomy Thesaurus. Keep the CV focused on evidence relevant to the proposed programme: publications, datasets, instruments, software, observing roles, grants, teaching or mentoring, and leadership contributions can all matter when they show independent capability.

Applicants must provide an impact-and-relevance description for up to three publications. Each description can be up to 100 words. The selected papers do not have to be the three with the most famous journals or the largest author lists. Choose work that shows what you discovered, built, measured, or enabled, and explain why it matters to the field and to the proposed next step.

The application also requires a publication list and a research overview. The overview is limited to five pages total, including tables and figures, while references may be placed at the end and do not count toward the page limit. It must contain two sections: “Summary of Previous and Current Research” and “Research Proposal.” The proposal must include its relevance to the Center for Astrophysics | Harvard & Smithsonian.

The public instructions say not to include reprints, preprints, a cover letter, cover sheets, or other extra materials. That is a meaningful constraint. A strong application will not try to compensate for a weak five-page argument with an unrequested attachment. Put the necessary evidence in the CV, publication summaries, and research overview, and follow the AJO fields exactly.

How to build the research overview

Use the first section to establish a coherent record. Explain the question that has guided your work, the methods you developed or applied, the results you personally drove, and the limitations that remain. Readers should be able to distinguish your contribution from the work of a large collaboration. If your best result came from a team, state the specific analysis, instrument, code, observation, or interpretation you owned.

Use the proposal section to show a tractable independent programme rather than a list of ambitions. Define the scientific question, the method, the decisive evidence, and the first milestones. State which CfA or SAO capability is essential, which potential host or collaborators would make the work possible, and what result would change the next stage of the project. If the plan depends on observing time, explain the scientific case and the fallback path if the requested time is not awarded.

The five-page limit includes tables and figures, so every element must do work. A small schematic can clarify a detector or pipeline; a compact table can show the data or milestones; a figure can make a central result easier to assess. Avoid filling pages with decorative graphics or a long background section that leaves no space for the proposal itself. References can sit at the end, but they should support a readable argument rather than become a substitute for one.

The CfA connection should be concrete. Mention the scientific group, SAO host, facility, archive, instrument, or engineering capability that changes what you can accomplish. The Center’s page says Fellows can collaborate across the institution, but only SAO scientists can officially host them. Confirm that administrative point and use the proposal to show why the relationship is practical.

How selection works and what reviewers need to see

The official page says applications are reviewed by the CfA Fellowship Committee. The criteria include the applicant’s qualifications, the merits of the proposed collaborative research, and alignment with CfA programmes and strategic priorities. That combination means a brilliant publication record cannot fully compensate for a vague project, and a perfectly matched project cannot substitute for evidence that the applicant can lead it.

Reviewers should be able to answer four questions quickly. What has this person already accomplished? What scientific question will they pursue next? Why does the project need the CfA and its collaborators? What will the applicant be positioned to do after the fellowship? The application does not need to predict a whole career, but it should show a credible move toward independence.

Ask a scientist outside your immediate specialty to read the overview for clarity. Then ask a prospective CfA host to check technical fit and a senior colleague to check whether the independence claim is supported by the record. Those reviews serve different purposes. A technically correct proposal can still lose readers if the central question is buried, while a polished narrative can still fail if it promises a project with no feasible facility or host arrangement.

Common mistakes to avoid

The most obvious mistake is missing the 5 p.m. Boston deadline or submitting outside AJO. Convert the deadline to your local time and leave room to check that every required PDF uploaded correctly. Do not assume that a saved draft counts as a submission.

Another mistake is treating the fellowship as a generic Cambridge postdoc. The application needs a specific CfA and SAO connection. Research the prospective host and the relevant facility, then explain the scientific reason for the match in plain terms.

Be precise about the 24-month rule. Do not count a family leave or documented career gap as full-time research, but do not silently omit it either. Put the dates and explanation in the CV so the committee can understand your calculation.

Avoid spending the five-page overview on a long literature review. The committee needs to see your contribution, the next research question, the work plan, and the institutional fit. Also follow the instruction not to send reprints, preprints, cover letters, cover sheets, or other unrequested files.

Finally, do not present every CfA facility as if it is already reserved. The page describes opportunities to propose for observing time and to collaborate with technical staff. Frame those resources as part of a justified plan and identify what you would do if a particular allocation is not available.

Frequently asked questions

Is the $84,600 amount a salary?

The official page calls it a stipend and lists an annual cost-of-living adjustment. It also lists research support, health and dental benefits, and relocation support separately. Applicants should ask the Fellowship Coordinator about tax treatment and appointment details rather than describing the stipend as ordinary salary.

Is the third year guaranteed?

No. The fellowship is a three-year appointment with the third year contingent on satisfactory progress. A proposal should include milestones that make progress assessable, while recognizing that the exact review process is governed by the appointment terms.

Can applicants from outside the United States apply?

Yes. The CfA describes the opportunity as open to English-speaking citizens from any nation. International applicants should separately confirm immigration, relocation, and any document requirements that apply to their circumstances.

Do referees submit letters with the initial application?

Not unless the Fellowship Coordinator contacts them. The stated process is that references are requested from a subset of applicants by November 5, 2026, and letters are due by November 17 at 5 p.m. EDT.

Can I submit a cover letter or reprints to add context?

No. The public instructions say not to include reprints, preprints, a cover letter, cover sheets, or anything else beyond the requested materials. Put the relevant context in the CV, publication descriptions, and five-page research overview.

Can the fellowship be combined with another fellowship?

The CfA page says the fellowship is not eligible to be combined with other fellowships. Keep applying to other opportunities if appropriate, but be prepared to choose one award if selected for more than one.

Official links and next steps

Read the official CfA Prize Postdoctoral Fellowship page for the current deadline, AJO instructions, eligibility rule, funding package, required documents, and contact information. The same page links to the AJO application, the SAO scientist list, and guidance for the research overview.

Before submitting, identify a possible SAO host and discuss whether the proposed work fits that scientist’s programme. Calculate your equivalent full-time post-Ph.D. research experience, record any excluded career gaps in the CV, and select three publications whose impact you can explain in 100 words each. Draft the five-page overview around one independent research question, one credible CfA connection, and a small number of milestones that can be evaluated.

Finally, upload only the requested PDFs, verify that the programme name in AJO is “CfA Prize Postdoctoral Fellowship,” and submit before October 15, 2026 at 5 p.m. Boston time. If a question about hosts, eligibility, benefits, or immigration is not answered by the official page, contact the CfA Fellowship Coordinator before the deadline rather than relying on an older fellowship announcement.