Results 51 to 60 of about 35,122 (152)

Early-time Observations of SN 2023wrk: A Luminous Type Ia Supernova with Significant Unburned Carbon in the Outer Ejecta

The Astrophysical Journal
We present extensive photometric and spectroscopic observations of the nearby Type Ia supernova (SN) 2023wrk at a distance of about 40 Mpc. The earliest detection of this SN can be traced back to a few hours after the explosion. Within the first few days,
Jialian Liu, Xiaofeng Wang, Cristina Andrade, Pierre-Alexandre Duverne, Jujia Zhang, Liping Li, Zhenyu Wang, Felipe Navarete, Andrea Reguitti, Stefan Schuldt, Yongzhi Cai, Alexei V. Filippenko, Yi Yang, Thomas G. Brink, WeiKang Zheng, Ali Esamdin, Abdusamatjan Iskandar, Chunhai Bai, Jinzhong Liu, Xin Li, Maokai Hu, Gaici Li, Wenxiong Li, Xiaoran Ma, Shengyu Yan, Jun Mo, Christophe Adami, Dalya Akl, Sarah Antier, Eric Broens, Jean-Grégoire Ducoin, Eslam Elhosseiny, Thomas M. Esposito, Michael Freeberg, Priyadarshini Gokuldass, Patrice Hello, Sergey Karpov, Isabel Márquez, Martin Mašek, Oleksandra Pyshna, Yodgor Rajabov, Denis Saint-Gelais, Marc Serrau, Oleksii Sokoliuk, Ali Takey, Manasanun Tanasan, Damien Turpin   +46 more
doaj   +1 more source

Type Ia Supernova Progenitor Properties and their Host Galaxies

The Astrophysical Journal
We present an eigenfunction method to analyze 161 visual light curves (LCs) of Type Ia supernovae (SNe Ia) obtained by the Carnegie Supernova Project to characterize their diversity and host-galaxy correlations.
Sudeshna Chakraborty, Benjamin Sadler, Peter Hoeflich, Eric Y. Hsiao, M. M. Phillips, C. R. Burns, T. Diamond, I. Dominguez, L. Galbany, S. A. Uddin, C. Ashall, K. Krisciunas, S. Kumar, T. B. Mera, N. Morrell, E. Baron, C. Contreras, M. D. Stritzinger, N. B. Suntzeff   +18 more
doaj   +1 more source

The Rise Times of High and Low Redshift Type Ia Supernovae are Consistent [PDF]

, 2000
We present a self-consistent comparison of the rise times for low- and high-redshift Type Ia supernovae. Following previous studies, the early light curve is modeled using a t-squared law, which is then mated with a modified Leibundgut template light ...
Berntsen J., Ceolin M. B., Goldhaber G., Greg Aldering, Groom D., Meikle W. P. S., Patat F., Peter Nugent, Robert Knop   +8 more
core   +4 more sources

A Type Ia Supernova near a Globular Cluster in the Early-type Galaxy NGC 5353

The Astrophysical Journal Letters
No progenitor of a Type Ia supernova (SN Ia) is known, but in old-population early-type galaxies, one may find SNe Ia associated with globular clusters, yielding a population age and metallicity.
Joel N. Bregman, Oleg Y. Gnedin, Patrick O. Seitzer, Zhijie Qu   +3 more
doaj   +1 more source

New mass limit for white dwarfs: super-Chandrasekhar type Ia supernova as a new standard candle

, 2013
Type Ia supernovae, sparked off by exploding white dwarfs of mass close to Chandrasekhar limit, play the key role to understand the expansion rate of universe.
Das, Upasana, Mukhopadhyay, Banibrata
core   +1 more source

The New Status Qvo? SN 2021qvo Is Another 2003fg-like Type Ia Supernova with a Rising Light-curve Bump

The Astrophysical Journal
In recent years, multiple Type Ia supernovae (SNe Ia) have been observed with “bumps” in their rising light curves shortly after the explosion. Here, we present SN 2021qvo: an SN Ia that exhibits a clear early bump in photometry obtained by the Young ...
I. A. Abreu Paniagua, W. B. Hoogendam, D. O. Jones, G. Dimitriadis, R. J. Foley, C. Gall, J. O’Brien, K. Taggart, C. R. Angus, C. Ashall, K. Auchettl, D. A. Coulter, K. W. Davis, T. de Boer, A. Do, H. Gao, L. Izzo, C.-C. Lin, T. B. Lowe, Z. Lai, R. Kaur, M. Y. Kong, A. Rest, M. R. Siebert, S. K. Yadavalli, Y. Zenati, Q. Wang   +26 more
doaj   +1 more source

Low Carbon Abundance in Type Ia Supernovae

, 2006
We investigate the quantity and composition of unburned material in the outer layers of three normal Type Ia supernovae (SNe Ia): 2000dn, 2002cr and 20 04bw.
Barbon R., C. L. Gerardy, E. L. Robinson, Foley R. J., G. H. Marion, Hoflich P., J. C. Wheeler, Khokhlov A., Khokhlov A., Matheson T., Mazzali P., Meikle P., P. Hoflich, W. D. Vacca   +13 more
core   +1 more source

From out of the Blue: Swift Links 2002es-like, 2003fg-like, and Early Time Bump Type Ia Supernovae

The Astrophysical Journal
We collect a sample of 42 Type Ia supernovae (SNe Ia) with Swift UV photometry and well-measured early time light-curve rises and find that 2002es-like and 2003fg-like SNe Ia have different prepeak UV color evolutions compared to normal SNe Ia and other ...
W. B. Hoogendam, B. J. Shappee, P. J. Brown, M. A. Tucker, C. Ashall, A. L. Piro   +5 more
doaj   +1 more source

The Role of Variations of Central Density Of White Dwarf Progenitors Upon Type Ia Supernovae

, 2010
The discovery of the accelerated expansion of the universe using Type Ia supernovae (SNe Ia) has stimulated a tremendous amount of interest in the use of SNe Type Ia events as standard cosmological candles, and as a probe of the fundamental physics of ...
Falta, D., Fisher, R., Jordan, G., Lamb, D.   +3 more
core   +1 more source

Cellular Dynamics of Helium-rich Detonation on Sub-Chandrasekhar Mass White Dwarf

The Astrophysical Journal
In previous hydrodynamic studies on detonation in the context of Type Ia supernovae (SNe Ia), consideration of cellular structures has been limited in the evaluation of a criterion in initiation, propagation, quenching, and the resolution requirement of ...
Kazuya Iwata, Keiichi Maeda
doaj   +1 more source