Three-dimensional Structure of Incomplete Carbon–Oxygen Detonations in Type Ia Supernovae
Carbon–oxygen (CO) detonation with reactions terminating either after burning of ^12 C in the leading ^12 C + ^12 C reaction or after burning of ^12 C and ^16 O to Si-group elements may occur in the low-density outer layers of exploding white dwarfs and be responsible for the production of intermed...
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2025-01-01
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| Online Access: | https://doi.org/10.3847/1538-4357/adb0c1 |
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| author | A. Khokhlov I. Domínguez A. Y. Chtchelkanova P. Hoeflich E. Baron K. Krisciunas M. Phillips N. Suntzeff L. Wang |
| author_facet | A. Khokhlov I. Domínguez A. Y. Chtchelkanova P. Hoeflich E. Baron K. Krisciunas M. Phillips N. Suntzeff L. Wang |
| author_sort | A. Khokhlov |
| collection | DOAJ |
| description | Carbon–oxygen (CO) detonation with reactions terminating either after burning of ^12 C in the leading ^12 C + ^12 C reaction or after burning of ^12 C and ^16 O to Si-group elements may occur in the low-density outer layers of exploding white dwarfs and be responsible for the production of intermediate-mass elements observed in the outer layers of Type Ia supernovae. Basic one-dimensional properties of CO-detonations have been summarized in our previous work. This paper presents the results of two- and three-dimensional numerical simulations of low-density CO-detonations and discusses their multidimensional stability, cellular structure, and propagation through a constant low-density background. We find three-dimensional CO detonations to be strikingly different from their one-dimensional and two-dimensional counterparts. Three-dimensional detonations are significantly more robust and capable of propagating without decay compared to highly unstable and marginal one- and two-dimensional detonations. The detonation cell size and whether burning of ^12 C in a three-dimensional detonation wave is followed by the subsequent ^16 O burning are sensitive to both the background density and the initial ^12 C to ^16 O mass ratio. We also discuss the possible implications for understanding the observed early-time bumps in light curves. |
| format | Article |
| id | doaj-art-cb32f5469f3a4f22b52c02875fc01dae |
| institution | DOAJ |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-cb32f5469f3a4f22b52c02875fc01dae2025-08-20T02:50:27ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01982220410.3847/1538-4357/adb0c1Three-dimensional Structure of Incomplete Carbon–Oxygen Detonations in Type Ia SupernovaeA. Khokhlov0I. Domínguez1https://orcid.org/0000-0002-3827-4731A. Y. Chtchelkanova2P. Hoeflich3E. Baron4https://orcid.org/0000-0001-5393-1608K. Krisciunas5https://orcid.org/0000-0002-6650-694XM. Phillips6https://orcid.org/0000-0003-2734-0796N. Suntzeff7https://orcid.org/0000-0002-8102-181XL. Wang8https://orcid.org/0000-0001-7092-9374Department of Astronomy and Astrophysics, the Enrico Fermi Institute, and the Computational Institute, The University of Chicago , Chicago, IL 60637, USADepartamento de Física Teórica y del Cosmos, University of Granada , 18071 Granada, SpainU.S. National Science Foundation , 2415 Eisenhower Ave, Alexandria, VA 22314, USADepartment of Physics, Florida State University , Tallahassee, FL 32306, USAPlanetary Science Institute , 1700 East Fort Lowell Road, Suite 106, Tucson, AZ 85719-2395, USA; Hamburger Sternwarte , Gojenbergsweg 112, 21029 Hamburg, Germany; Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma , Norman, OK 73019, USAGeorge P. and Cynthia Woods Mitchell Institute for Fundamental Physics & Astronomy, Texas A&M University , Department of Physics & Astronomy, 4242 TAMU, College Station, TX 77843, USALas Campanas Observatory , Carnegie Observatories, Casilla 601, La Serena, ChileGeorge P. and Cynthia Woods Mitchell Institute for Fundamental Physics & Astronomy, Texas A&M University , Department of Physics & Astronomy, 4242 TAMU, College Station, TX 77843, USAGeorge P. and Cynthia Woods Mitchell Institute for Fundamental Physics & Astronomy, Texas A&M University , Department of Physics & Astronomy, 4242 TAMU, College Station, TX 77843, USACarbon–oxygen (CO) detonation with reactions terminating either after burning of ^12 C in the leading ^12 C + ^12 C reaction or after burning of ^12 C and ^16 O to Si-group elements may occur in the low-density outer layers of exploding white dwarfs and be responsible for the production of intermediate-mass elements observed in the outer layers of Type Ia supernovae. Basic one-dimensional properties of CO-detonations have been summarized in our previous work. This paper presents the results of two- and three-dimensional numerical simulations of low-density CO-detonations and discusses their multidimensional stability, cellular structure, and propagation through a constant low-density background. We find three-dimensional CO detonations to be strikingly different from their one-dimensional and two-dimensional counterparts. Three-dimensional detonations are significantly more robust and capable of propagating without decay compared to highly unstable and marginal one- and two-dimensional detonations. The detonation cell size and whether burning of ^12 C in a three-dimensional detonation wave is followed by the subsequent ^16 O burning are sensitive to both the background density and the initial ^12 C to ^16 O mass ratio. We also discuss the possible implications for understanding the observed early-time bumps in light curves.https://doi.org/10.3847/1538-4357/adb0c1Type Ia supernovae |
| spellingShingle | A. Khokhlov I. Domínguez A. Y. Chtchelkanova P. Hoeflich E. Baron K. Krisciunas M. Phillips N. Suntzeff L. Wang Three-dimensional Structure of Incomplete Carbon–Oxygen Detonations in Type Ia Supernovae The Astrophysical Journal Type Ia supernovae |
| title | Three-dimensional Structure of Incomplete Carbon–Oxygen Detonations in Type Ia Supernovae |
| title_full | Three-dimensional Structure of Incomplete Carbon–Oxygen Detonations in Type Ia Supernovae |
| title_fullStr | Three-dimensional Structure of Incomplete Carbon–Oxygen Detonations in Type Ia Supernovae |
| title_full_unstemmed | Three-dimensional Structure of Incomplete Carbon–Oxygen Detonations in Type Ia Supernovae |
| title_short | Three-dimensional Structure of Incomplete Carbon–Oxygen Detonations in Type Ia Supernovae |
| title_sort | three dimensional structure of incomplete carbon oxygen detonations in type ia supernovae |
| topic | Type Ia supernovae |
| url | https://doi.org/10.3847/1538-4357/adb0c1 |
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