Results 101 to 110 of about 7,025,957 (218)

Type Ia Supernovae: Energetics, Neutronization and Nucleosynthesis [PDF]

, 2007
The utility of Type Ia supernovae, not simply as probes of the distance scale but also as a means of constraining the properties of dark energy, demands a significant improvement in theoretical predictions of their properties in outburst. To this end, we
James W. Truran, Dean M. Townsley, Vladimirova, Natalia, Alan C. Calder, Truran, James W., Lamb, Donald Q., Donald Q. Lamb, Edward F. Brown, Ivo R. Seitenzahl, Natalia Vladimirova, Townsley, Dean M., Peng, Fang, Fang Peng, Seitenzahl, Ivo R., Calder, Alan C., Brown, Edward F.   +15 more
core   +1 more source

SN 2023ehl: A Normal Type Ia Supernova with High-velocity Features

The Astrophysical Journal
SN 2023ehl, a normal Type Ia supernova with a typical decline rate, was discovered in the galaxy UGC 11555 and offers valuable insights into the explosion mechanisms of white dwarfs.
Xiangyun Zeng, Lei Hu, Sheng Zheng, Xiaolong Li, Xiaoyu Luo, Sai Li, D. Andrew Howell, Yize Dong, Stefano Valenti, Liping Fu, Cheng Liu, Shiyu Li, Shuguang Zeng, Yao Huang, Yijing Luo, K. Azalee Bostroem, Curtis McCully, Ali Esamdin, Moira Andrews, Joseph R. Farah, Megan Newsome, Giacomo Terreran, Estefania Padilla Gonzalez, Emily Hoang, Aravind Pazhayath Ravi, Darshana Mehta, Nicolas Meza Retamal, Peng Zhang, Rongjun Zhang, Wang Li, Haonan Zhang   +30 more
doaj   +1 more source

Three-dimensional Structure of Incomplete Carbon–Oxygen Detonations in Type Ia Supernovae

The Astrophysical Journal
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
A. Khokhlov, I. Domínguez, A. Y. Chtchelkanova, P. Hoeflich, E. Baron, K. Krisciunas, M. Phillips, N. Suntzeff, L. Wang   +8 more
doaj   +1 more source

Detection of Persistent Helium Absorption in the 91bg-like Type Ia Supernova 2022an

The Astrophysical Journal Letters
We present optical and near-infrared (NIR) observations of the fast-declining Type Ia supernova (SN Ia) 2022an. The photometric and spectroscopic properties identify it as a standard 91bg-like event; however, our data reveal a relatively narrow ...
Ping Chen, Avishay Gal-Yam, Subo Dong, Renyue Cen, Boaz Katz, Kate Maguire, Steve Schulze, Jesper Sollerman, Joseph P Anderson, Ting-Wan Chen, L. Galbany, Mariusz Gromadzki, Chang Liu, Adam A. Miller, Tomás E. Müller-Bravo, Tanja Petrushevska, Giuliano Pignata   +16 more
doaj   +1 more source

88th Annual Meeting of the Meteoritical Society 2026: Abstracts

Meteoritics &Planetary Science, Volume 61, Issue S1, Page S48-S551, August 2026.
wiley   +1 more source

SN 2024gy: Multiepoch Spectroscopic Features Suggestive of Delayed Detonation in a Type Ia Supernova

The Astrophysical Journal
We present photometric and spectroscopic observations of SN 2024gy, a Type Ia supernova (SN Ia) exhibiting high-velocity features (HVFs) in its early-time spectra. This SN reaches a peak B -band magnitude of −19.25 ± 0.29 mag and subsequently declines by
Liping Li, Zhenyu Wang, Jialian Liu, Yu Pan, Alexei V. Filippenko, Jujia Zhang, Xiaofeng Wang, Brajesh Kumar, Yi Yang, Thomas G. Brink, WeiKang Zheng, Xiangcun Meng, Lingzhi Wang, Zeyi Zhao, Qian Zhai, Yongzhi Cai, Giuliano Pignata, Xinlei Chen, Xingzhu Zou, Jiewei Zhao, Xiangkun Liu, Xiaowei Liu, Xinzhong Er, A. Reguitti, R. Michael Rich, Jon M. Rees, Mark A. Croom, Osmin Caceres, K. Itagaki, Bo Wang, Jinming Bai   +30 more
doaj   +1 more source

ISEV2026 Abstract Book

Journal of Extracellular Vesicles, Volume 15, Issue S1, June 2026.
wiley   +1 more source

Type Ia supernovae: spectroscopic surprises [PDF]

, 2004
Recent observations have extended the range of diversity among spectra of Type Ia supernovae. I briefly discuss SN Ia explosion models in the spectroscopic context, the observed diversity, and some recent results from direct analysis with the Synow code for one normal and two peculiar SNe Ia.
openaire   +2 more sources

Topics in Core-Collapse Supernova Theory: The Formation of Black Holes and the Transport of Neutrinos [PDF]

, 2012
Core-Collapse Supernovae are one of the most complex astrophysical systems in the universe. They deeply entwine aspects of physics and astrophysics that are rarely side by side in nature.
O'Connor, Evan Patrick
core   +1 more source

Improving the Standardization of Type Ia Supernovae

, 2018
International audienceType Ia Supernovae have provided a powerful tool for measuring the acceleratingexpansion of the Universe and constraining the properties of dark energy, butfuture progress will limited by various uncertainties in their ...
Saunders, Clare
core   +2 more sources