JCAP Submission Process
Journal of Cosmology and Astroparticle Physics's submission process, first-decision timing, and the editorial checks that matter before peer review begins.
Readiness scan
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Key numbers before you submit to Journal of Cosmology and Astroparticle Physics
Acceptance rate, editorial speed, and cost context, the metrics that shape whether and how you submit.
What acceptance rate actually means here
- Manusights does not list an acceptance rate for Journal of Cosmology and Astroparticle Physics.
- An overall acceptance rate does not establish the desk-rejection share or the most common reason for rejection.
- Check the stated reporting period and manuscript population before comparing rates.
What to check before you upload
- Scope fit: does your paper address the exact problem this journal publishes on?
- Desk decisions are fast; scope problems surface within days.
- Cover letter framing: editors use it to judge fit before reading the manuscript.
How to approach Journal of Cosmology and Astroparticle Physics
Use the submission guide like a working checklist. The goal is to make fit, package completeness, and cover-letter framing obvious before you open the portal.
Stage | What to check |
|---|---|
1. Scope | Scope and keyword fit |
2. Package | Prepare SISSA/IOP package |
3. Cover letter | Submit online |
4. Final check | Editorial routing |
Quick answer: At JCAP, the first clock you feel is a SISSA editorial scope screen, not refereeing, and the journal runs on arXiv-first norms. JCAP publishes no overall time-to-decision figure, only guideline targets for each stage (editors should send papers to referees within 5 days, and referees should review within 4 weeks at most), so a very early first decision usually means a scope or significance return. Papers that clear the screen follow those stage targets, which JCAP calls a guideline because quality has priority over speed. The process page below covers what each status and decision actually means, so you can read your manuscript's position instead of refreshing the portal.
Looking for the JCAP SISSA submission server?
In our pre-submission review work on JCAP manuscripts, the papers that stall in the first decision window are rarely wrong on the physics. They stall because the SISSA editors cannot quickly place the work inside cosmology and astroparticle scope, or cannot see a clear advance, and JCAP's editorial screen is selective enough to return a sound paper before a referee is ever assigned.
Use the official JCAP journal page at IOP Publishing and the SISSA editorial system for live upload, status tracking, and account access. Use this page for what happens after you upload: how the SISSA editorial scope screen works, how the arXiv-first culture fits in, and what each status means before and after review. In our pre-submission review work, the single most misread signal is the speed of the first decision. Authors see a decision arrive very early and assume the paper was refereed, when in almost every case it was returned at the editorial screen because the scope sat outside cosmology and astroparticle physics or the advance was not clear. The SISSA editors read the abstract, the central result, and the framing, then decide whether the work belongs in JCAP rather than JHEP, ApJ, or MNRAS, and whether it meets the journal's theoretical-rigor expectations. A manuscript that sits at the editorial screen and then decides without external review was scope-screened, not refereed. Reading that pattern correctly tells you whether to sharpen the cosmology or astroparticle framing or re-route to a sister venue without losing weeks.
Submit if the work sits squarely in cosmology or astroparticle physics and the advance is clear in the abstract; think twice if it is general high-energy theory or broad observational astrophysics, because that is what the scope screen catches.
What is the JCAP submission process at a glance?
First decisions are weighted toward the SISSA editorial scope screen, which is where many submissions end. For papers sent to referees, JCAP's guideline is that editors send them out within 5 days and referees review within 4 weeks at most, while edge cases diverge sharply: a scope or significance return is an expedited outcome, and a contested paper is an outlier that can run well past the guideline targets. JCAP is the SISSA cosmology and astroparticle specialist, published with IOP, and the scope screen is the dominant feature of the early timeline.
If you want an outside read before you submit, use the free manuscript readiness check to test whether the cosmology or astroparticle framing survives the SISSA scope screen.
Stage | What happens | JCAP guideline timing |
|---|---|---|
Upload and arXiv id | You post to arXiv first and enter the arXiv id; the SISSA system accepts the package and sends the preprint to the editor chosen from your keywords | Immediately upon submission |
SISSA editorial scope screen | The editor reads abstract and result; assesses cosmology and astroparticle scope and significance | Editors should send new preprints to referees within 5 days |
Peer review | The editor reviews personally or sends the paper to one or more referees, who assess the contribution, rigor, and significance | Referees should accept or decline within 4 days and review in 4 weeks at most |
Decision after review | Accept, revise, or reject | JCAP publishes no overall decision time |
Revision and resubmission | Authors revise; revised versions are reviewed again before a final decision or a further round | New version and cover letter due within 90 days (major) or 30 days (minor) |
Acceptance to publication | Authors proofread once; IOP Publishing handles online publication | IOP publishes if no author feedback arrives within 7 days of the proofreading notification |
Initial quality check: completeness and policy fit
The first layer is administrative but still decisive. Before the editors read for scope, the SISSA system checks the uploaded file format, the archive and master file, whether the LaTeX compiles on the JCAP server, and the arXiv identifier. Funding and conflict-of-interest declarations follow IOP Publishing's ethical policy, and a data-availability statement is encouraged but not required. A submission can look finished in the system and still be returned if the abstract does not place the work clearly inside cosmology and astroparticle physics.
Editorial assignment: routing by cosmology and astroparticle area
JCAP assigns the submission automatically to the Editorial Board member whose areas of expertise best match your keywords, taking editor workload into account. The 2 to 4 keywords you choose from the JCAP list, which cannot be changed after submission, determine which editor reads the contribution first, and keywords that frame the work as general high-energy physics can route the paper away from the cosmology editor best placed to value it.
Peer review: significance assessment after the scope screen
Manuscripts that clear the scope screen move to one or more referees, or the editor reviews them personally; referee identities are kept confidential. The referee job is not only to check that the calculation or the analysis is correct. It is to decide whether the cosmology or astroparticle contribution is significant, whether the theory or data analysis is rigorous, and whether the result advances the field rather than restating known physics.
Final decision: scope and significance stay live after reports return
Even after review, the decision still turns on scope and significance. A technically correct paper can be returned if the reports show the contribution is incremental, the work fits a general high-energy or observational venue better, or the advance does not meet SISSA's expectations.
What happens during the SISSA editorial scope screen
This is where the first decision comes from. Before any referee is assigned, the SISSA editors read the abstract, the central result, and the framing, and decide whether the paper is a genuine cosmology or astroparticle contribution in scope for JCAP.
At this stage the editors are effectively asking:
- does this work sit squarely in cosmology or astroparticle physics, or is it general high-energy theory better suited to JHEP?
- is it a theory or observational advance, or broad observational astrophysics that fits ApJ or MNRAS?
- does it meet SISSA's theoretical-rigor expectations, with the result clear in the abstract?
Because this screen is selective, a very early decision is usually a scope return rather than an acceptance. JCAP's FAQ adds that a not suitable decision, which means the paper does not fall within the journal's scope or does not meet its standards, cannot be appealed. An early decision lets authors re-route to a sister venue without a long wait.
What happens during peer review
Papers that clear the screen go to one or more referees, who typically assess:
- whether the cosmology or astroparticle contribution is sound and significant
- the rigor of the theory, the calculation, or the data analysis
- whether the result advances the field rather than restating known physics
- whether the conclusions are supported and appropriately bounded
- clarity of the contribution against the arXiv preprint
JCAP keeps referee identities confidential while the manuscript names its authors and is already on arXiv, so review is single-blind in practice, and the arXiv-first culture supports timely review. JCAP publishes no overall decision time; its guideline is that referees review a paper in 4 weeks at most from the editor's request, and a single manuscript can move faster or slower depending on referee availability and the subfield.
What does each JCAP decision mean?
- Reject (fast, pre-review): a SISSA editorial return, usually on scope or significance. Sharpen the cosmology or astroparticle framing or re-route to JHEP, ApJ, or MNRAS before resubmitting.
- Major revision: substantive referee concerns, often about the rigor of the calculation, the analysis, or the significance of the advance. The revised version is reviewed again before a final decision or a further round, and JCAP asks for it, with a cover letter, within 90 days; respond point by point.
- Minor revision: the paper is essentially accepted pending specific fixes. Respond carefully and promptly; JCAP asks for the revised version within 30 days.
- Accept: under SISSA/IOP rapid norms, acceptance can follow a clean revision quickly.
Named editorial failure patterns in JCAP submissions
Four recurring patterns return otherwise-capable JCAP packages in the first decision window:
- Misreading a fast decision. A very quick decision is usually a scope return, not a fast acceptance. The screen happened before refereeing.
- General high-energy theory in a cosmology venue. A formal high-energy result with a cosmology label often fits JHEP, and the SISSA scope screen returns it.
- Broad observational astrophysics. An observational result better suited to ApJ or MNRAS reads as out of scope for a cosmology and astroparticle specialist.
- An incremental advance. A calculation that restates known physics without a clear advance is what the SISSA editors return first.
Check if your JCAP result reads as a clear advance before the editorial screen →
Check whether your manuscript fits JCAP, JHEP, ApJ, or MNRAS →
This guide tells you what JCAP editors look for at the scope screen; the review tells you whether your paper passes it. 60-day money-back guarantee; authors retain all rights and we do not train models on submitted manuscripts.
Readiness check
Run the scan while Journal of Cosmology and Astroparticle Physics's requirements are in front of you.
See how this manuscript scores against Journal of Cosmology and Astroparticle Physics's requirements before you submit.
What we see in our pre-submission review work at JCAP
In our pre-submission review work on JCAP submissions, three patterns account for most of the manuscripts that stall at the SISSA scope screen, before a referee is ever assigned.
The scope sits between cosmology and general high-energy theory
We repeatedly see JCAP manuscripts where the result is a formal high-energy calculation with a cosmology motivation bolted on, so the SISSA editors read it as a JHEP paper. Because the scope screen reads the abstract for genuine cosmology or astroparticle content, a high-energy framing reads as out of scope. The fix we push is to make the cosmology or astroparticle question and its observational or theoretical consequence central in the abstract, not a motivation paragraph.
The advance is not clear against the arXiv literature
A related pattern is a careful calculation that does not state what it advances over the current arXiv literature. The SISSA editors and referees read against a fast-moving preprint field, and an unclear advance reads as incremental. We help authors state the specific advance over the most recent relevant arXiv work and make that comparison legible in the abstract and introduction, because the arXiv-first culture means the field already knows the prior results.
The result is better routed to ApJ or MNRAS
The third pattern is a strong observational astrophysics result framed for JCAP, where the cosmology or astroparticle content is thin. The SISSA editors register an observational paper and route it out, and we help authors either sharpen the cosmology or astroparticle contribution or route deliberately to ApJ, MNRAS, or A&A rather than spend a scope-return cycle. In our JCAP readiness checks we confirm the abstract states the cosmology or astroparticle result and its advance over the recent arXiv literature before any formal setup, because the SISSA editors read those lines first and a cosmology question that appears only after pages of derivation reads as a high-energy paper wearing a cosmology label.
Pre-submission checklist before you submit
Before you submit to JCAP, confirm the scope and the package will both survive the SISSA screen:
- the abstract places the work squarely in cosmology or astroparticle physics, with the advance stated clearly
- the contribution is a theory or observational advance, not general high-energy theory or broad observational astrophysics
- the advance over the recent arXiv literature is explicit, with the preprint referenced
- authorship, the arXiv identifier, competing-interest disclosure, and any data-availability statement are in place
A free JCAP readiness check tests whether the cosmology or astroparticle framing and the advance clear the SISSA scope screen before you submit. Or see example reports first.
Should you route to JCAP or a sister venue?
JCAP (SISSA/IOP, JIF 5+, cosmology and astroparticle specialist) sits among several adjacent venues, and the scope screen is partly a routing decision:
- choose Physical Review D (APS) for particle physics and cosmology with a formal high-energy emphasis
- choose JHEP (SISSA/Springer) for general high-energy theory
- choose ApJ (AAS) or MNRAS (RAS) for observational astrophysics with broader scope
- choose Astronomy and Astrophysics for European observational and theoretical astrophysics
- stay with JCAP when the work is a cosmology or astroparticle advance with the scope clear in the abstract
Submit If: is this ready for JCAP?
Submit if the work sits squarely in cosmology or astroparticle physics, the theory or analysis is rigorous, the advance over the recent arXiv literature is clear, and the scope is visible in the abstract.
Think Twice If: should you route elsewhere?
Think twice, and consider a sister venue or a reframe, if your manuscript matches these patterns:
- General high-energy theory. A formal result with a cosmology motivation often fits JHEP.
- Broad observational astrophysics. An observational result better suited to ApJ or MNRAS reads as out of scope.
- An incremental advance. A calculation that restates known physics is what the scope screen returns first.
Those are the cases the SISSA scope screen returns first.
When was this JCAP submission-process guide last verified?
Last verified 2026-10-10 against JCAP's SISSA author materials and editorial-workflow help and IOP Publishing's publication-charges and ethical-policy pages. Editorial timing varies between scope returns and refereed papers; treat the stage targets as guidelines and confirm the current figures before you submit.
JCAP wants cosmology or astroparticle physics specifically. General astrophysics fits elsewhere. Check my abstract against JCAP and the nearer options.
Frequently asked questions
JCAP publishes no overall time-to-decision figure. Its editorial-workflow help gives guideline targets: editors should send new preprints to referees within 5 days, and referees should accept or decline within 4 days and review the paper in 4 weeks at most from the editor's request, with scientific quality and relevance taking priority over speed. The editor may also review a paper personally. Treat these as guidelines, not a promise for one manuscript.
A very early decision is usually an editorial return on scope or significance, not an acceptance. JCAP editors screen for genuine cosmology or astroparticle scope and a theoretical or observational advance before assigning referees, so a quick decision usually signals a scope or significance mismatch rather than a fast acceptance. JCAP's FAQ adds that a not suitable decision cannot be appealed.
JCAP submissions go through the SISSA Medialab editorial system, published jointly with IOP Publishing, and the preprint web page on your author pages shows the status and progress of the editorial procedure. JCAP requires an arXiv id at submission, so under its arXiv-first culture every submission is already on arXiv. A manuscript that sits at the editorial screen and then decides without external review was scope-screened; one that moves to referees has cleared the cosmology and astroparticle scope check.
The most common returns are scope outside cosmology and astroparticle physics (general high-energy theory often fits JHEP, observational astrophysics often fits ApJ or MNRAS), an incremental result without a clear theoretical or observational advance, and a manuscript that does not meet SISSA's theoretical-rigor expectations. These are screened before referees are assigned.
JCAP has no fixed referee count: the editor in charge either reviews the paper personally or sends it to as many referees as may be necessary, and referee identities are kept confidential. Referees assess whether the cosmology or astroparticle contribution is sound and significant, the rigor of the theory or the analysis, and whether the result advances the field rather than restating known physics, with the arXiv preprint supporting timely review.
Sources
- JCAP at IOP Publishing, IOP Publishing and SISSA, accessed June 2026
- JCAP author and submission information, SISSA, accessed October 2026
- Clarivate Journal Citation Reports (2026 release) (JIF 5+)
Final step
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