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[CLC][ITAL]r[/ITAL][/CLC]-Process in Neutron Star Mergers
Open accessAbstract
The production site of the neutron-rich heavy elements that are formed by rapid neutron capture (the r-process) is still unknown despite intensive research. Here we show detailed studies of a scenario that has been proposed earlier by Lattimer & Schramm, Symbalisty & Schramm, Eichler et al., and Davies et al., namely the merger of two neutron stars. The results of hydrodynamic and full network calculations are combined in order to investigate the relevance of this scenario for r-process nucleosynthesis. Sufficient material is ejected to explain the amount of r-process nuclei in the Galaxy by decompression of neutron star material. Provided that the ejecta consist of matter with a proton-to-nucleon ratio of Ye approximately 0.1, the calculated abundances fit the observed solar r-pattern excellently for nuclei that include and are heavier than the A approximately 130 peak.
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Cited by
Neutron-Capture Elements in the Early Galaxy
Sneden, C., Cowan, J. J., & Gallino, R. (2008) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.46.060407.145207 · Cited by 968
Bauswein, A., Goriely, S., & Janka, H.-T. (2013) · The Astrophysical Journal · doi:10.1088/0004-637x/773/1/78 · Cited by 567
Identification of strontium in the merger of two neutron stars
Watson, D., Hansen, C. J., Selsing, J., Koch, A., Malesani, D. B., Andersen, A. C., Fynbo, J. P. U., Arcones, A., Bauswein, A., Covino, S., et al. (2019) · Nature · doi:10.1038/s41586-019-1676-3 · Cited by 482
The degree of fine-tuning in our universe — and others
Adams, F. C. (2019) · Physics Reports · doi:10.1016/j.physrep.2019.02.001 · Cited by 62
Metadata
- Authors
- Freiburghaus, C., Rosswog, S., & Thielemann, F.-K.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1999-11-10
- Volume
- 525
- Issue
- 2
- Pages
- L121-L124
- ISSN
- 0004-637X (ISSN-L)
- OpenAlex
- W1660004571
- Cited by
- 818
- References
- 0
- FWCI
- 10.21
- Type
- journal article
- Language
- en
- Open access
- bronze
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- CoChat. (2026). Citation check: [CLC][ITAL]r[/ITAL][/CLC]-Process in Neutron Star Mergers. https://app.cochat.ai/papers/10.1086/312343
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- Freiburghaus, C., Rosswog, S., & Thielemann, F.-K. (1999). [CLC][ITAL]r[/ITAL][/CLC]-Process in Neutron Star Mergers. The Astrophysical Journal. https://doi.org/10.1086/312343
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