# The Astrophysical Journal

> scientific journal (0004-637X)

**Wikidata**: [Q598789](https://www.wikidata.org/wiki/Q598789)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/The_Astrophysical_Journal)  
**Source**: https://4ort.xyz/entity/the-astrophysical-journal

## Summary

The Astrophysical Journal was established in 1895[1].

## Summary
The Astrophysical Journal is a scientific journal publishing peer-reviewed research in astrophysics, founded in 1895. It is published by IOP Publishing, an academic publisher based in the United Kingdom, and is known for its open-access model, allowing free access to its articles.

## Key Facts
- **Founded**: 1895
- **Publisher**: IOP Publishing (inception: 1874, headquarters: United Kingdom)
- **ISSN**: 0004-637X
- **Aliases**: Astrophysical Journal, Astrophys. J., Ap.J.
- **Access Model**: Open-access journal
- **Website**: https://iopscience.iop.org/journal/0004-637X, http://adswww.harvard.edu/journals/apj/, http://www.iop.org/journals/0004-637X
- **Wikidata Description**: Scientific journal (0004-637X)
- **Wikipedia Title**: The Astrophysical Journal
- **Sitelink Count**: 35 (Wikidata)
- **Related Entities**:
  - IOP Publishing (academic publisher, United Kingdom)
  - Scientific journal (classification)
  - Open-access journal (classification)
  - United States (country of relevance)
  - United Kingdom (publisher's country)

## FAQs
- **What is The Astrophysical Journal?**
  It is a scientific journal specializing in astrophysics research, published by IOP Publishing since 1895. It is known for its open-access policy, making articles freely available to readers.

- **Who publishes The Astrophysical Journal?**
  The journal is published by IOP Publishing, an academic publisher founded in 1874 and headquartered in the United Kingdom.

- **Is The Astrophysical Journal open-access?**
  Yes, it is classified as an open-access journal, meaning its articles are freely available without cost barriers.

- **What is the ISSN of The Astrophysical Journal?**
  The ISSN is 0004-637X.

- **Where can I find The Astrophysical Journal online?**
  The journal can be accessed via its official websites: https://iopscience.iop.org/journal/0004-637X, http://adswww.harvard.edu/journals/apj/, and http://www.iop.org/journals/0004-637X.

## Why It Matters
The Astrophysical Journal is a foundational publication in astrophysics, providing a platform for peer-reviewed research that shapes our understanding of the universe. Its open-access model ensures broad dissemination of knowledge, contributing to global scientific collaboration. As one of the oldest and most respected journals in its field, it plays a critical role in advancing astrophysical research and education.

## Notable For
- **Long-standing legacy**: Founded in 1895, it is one of the oldest journals in astrophysics.
- **Open-access policy**: Unlike many scientific journals, it provides free access to its articles.
- **High-impact research**: Publishes groundbreaking studies in astrophysics, influencing academic and professional communities.
- **Publisher reputation**: Published by IOP Publishing, a well-established academic publisher in the United Kingdom.

## Body
### History
The Astrophysical Journal was established in 1895, making it one of the oldest journals in astrophysics. It has maintained a consistent publication record, evolving with the field while preserving its core mission of disseminating high-quality research.

### Publisher
IOP Publishing, the journal's publisher, was founded in 1874 and is headquartered in the United Kingdom. It specializes in academic publishing and has a significant presence in scientific journals.

### Classification
The Astrophysical Journal is classified as both a scientific journal and an open-access journal. This dual classification reflects its commitment to scientific rigor and accessibility.

### Accessibility
The journal's open-access model ensures that its articles are freely available to readers worldwide, promoting knowledge sharing and research transparency.

### Related Entities
- **IOP Publishing**: The journal's publisher, based in the United Kingdom, with a history dating back to 1874.
- **United States**: Relevant due to the journal's focus on astrophysics, a field with strong ties to American research institutions.
- **United Kingdom**: The country of the journal's publisher, IOP Publishing.

### Impact
The Astrophysical Journal has been instrumental in advancing astrophysical research, with its publications cited in countless studies and educational materials. Its open-access policy has further enhanced its reach, making it a valuable resource for researchers globally.

## References

1. [Source](https://journals.aas.org/oa/)
2. ISSN Portal
3. [Source](https://journals.aas.org/astrophysical-journal/)
4. Freebase Data Dumps. 2013
5. ERA 2010 journal list
6. Scopus
7. BFI 2012 journal list
8. BFI 2019 journal list
9. OpenCitations Corpus
10. Directory of Open Access Journals
11. National Collective Archive of Periodicals
12. [Source](https://mjl.clarivate.com/search-results?issn=0004-637X)
13. OpenAlex