Results 71 to 80 of about 2,618 (181)

Observational study of Core-Collapse Supernovae [PDF]

, 2019
The advent of dedicated surveys for studying transient events has invoked a great interest in the study of supernovae (SNe). The rate of discovery of SNe has hence gone up ten-fold relinquishing their diversity.
Singh, Avinash
core  

The role of neutrinos in explosive nucleosynthesis in core collapse supernova models with neutrino transport [PDF]

, 2007
The problem of core collapse supernova explosions is long standing and attempts to understand the mechanism have been ongoing. On one hand, a full understanding of the underlying mechanism is still pending.
Fröhlich, Carla
core   +1 more source

Late-time Optical and X-Ray Emission Evolution of the Oxygen-rich SN 1996cr

The Astrophysical Journal
When the ejecta of a supernova (SN) interact with the progenitor star's circumstellar environment, a strong shock is driven back into the ejecta, causing the material to become bright optically and in X-rays.
Daniel Patnaude, Kathryn E. Weil, Robert A. Fesen, Dan Milisavljevic, Ralph P. Kraft   +4 more
doaj   +1 more source

Long-rising Type II Supernovae in the Zwicky Transient Facility Census of the Local Universe

The Astrophysical Journal, 2023
SN 1987A was an unusual hydrogen-rich core-collapse supernova originating from a blue supergiant star. Similar blue supergiant explosions remain a small family of events, and are broadly characterized by their long rises to peak.
Tawny Sit, Mansi M. Kasliwal, Anastasios Tzanidakis, Kishalay De, Christoffer Fremling, Jesper Sollerman, Avishay Gal-Yam, Adam A. Miller, Scott Adams, Robert Aloisi, Igor Andreoni, Matthew Chu, David Cook, Kaustav Kashyap Das, Alison Dugas, Steven L. Groom, Anna Y. Q. Ho, Viraj Karambelkar, James D. Neill, Frank J. Masci, Michael S. Medford, Josiah Purdum, Yashvi Sharma, Roger Smith, Robert Stein, Lin Yan, Yuhan Yao, Chaoran Zhang   +27 more
doaj   +1 more source

The 40K‐K dating system: 1. Improving data interpretation using new model calculations

Meteoritics &Planetary Science, EarlyView.
Abstract The 40K‐K cosmic‐ray exposure (CRE) dating system offers a promising method for determining exposure ages of iron meteorites by combining the radioactive cosmogenic 40K with the stable cosmogenic isotopes 39K and 41K. However, earlier applications relied on semi‐empirical production models and inconsistent analytical data sets, limiting their ...
Farshid Nozarian, Suzette Timmerman, Ingo Leya   +2 more
wiley   +1 more source

Shock-cooling Constraints via Early-time Observations of the Type IIb SN 2022hnt

The Astrophysical Journal
We report the results of a rapid follow-up campaign on the Type IIb supernova (SN) 2022hnt. We present a daily, multiband, photometric follow-up using the Las Cumbres Observatory, the Zwicky Transient Facility, the orbiting Swift observatory, and the ...
Joseph R. Farah, D. Andrew Howell, Giacomo Terreran, Ido Irani, Jonathan Morag, Craig Pellegrino, Curtis McCully, Megan Newsome, Estefania Padilla Gonzalez, K. Azalee Bostroem, Griffin Hosseinzadeh, Moira Andrews, Logan Prust, Daichi Hiramatsu   +13 more
doaj   +1 more source

Spectropolarimetric Evolution of SN 2023ixf: An Asymmetric Explosion in a Confined Aspherical Circumstellar Medium

The Astrophysical Journal
We present complete spectropolarimetric coverage of the Type II supernova (SN) 2023ixf, ranging from 1 to 120 days after explosion. Polarimetry was obtained with the Kast double spectrograph on the Shane 3 m telescope at Lick Observatory.
Sergiy S. Vasylyev, Luc Dessart, Yi Yang, Alexei V. Filippenko, Kishore C. Patra, Thomas G. Brink, Lifan Wang, Ryan Chornock, Raffaella Margutti, Elinor L. Gates, Adam J. Burgasser, Huei Sears, Preethi R. Karpoor, Natalie LeBaron, Emma Softich, Christopher A. Theissen, Eli Wiston, WeiKang Zheng   +17 more
doaj   +1 more source

Radiative Acceleration of Dense Circumstellar Material in Interacting Supernovae

The Astrophysical Journal, 2023
Early-time light curves/spectra of some hydrogen-rich supernovae (SNe) provide solid evidence of the existence of confined, dense circumstellar matter (CSM) surrounding dying massive stars. We numerically and analytically study the radiative acceleration
Daichi Tsuna, Kohta Murase, Takashi J. Moriya   +2 more
doaj   +1 more source

Collisionless Shocks: Contemporary State After Three Quarters of a Century of Research

Reviews of Geophysics, Volume 64, Issue 3, September 2026.
Abstract The collisionless shock research started in the late 1950s. Since then, plenty of data have been accumulated due to the large number of missions in the heliosphere, providing in situ measurements of the fields and particles. The quality of these measurements has vastly improved, especially in the last two decades.
M. Gedalin, M. Balikhin, V. Krasnoselskikh   +2 more
wiley   +1 more source

Type Ii Supernovae At High Redshifts [PDF]

, 2007
. A hydro code coupled with radiation transfer was applied to produce monochromatic light curves of two models of type II supernovae (SN II) simulating SN II-P and SN IIb (SN 1993J-like).
P. Lundqvist, Chugai Blinnikov Lundqvist
core