Results 51 to 60 of about 5,737 (225)

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  

Using Nebular Near-infrared Spectroscopy to Measure Asymmetric Chemical Distributions in 2003fg-like Thermonuclear Supernovae

The Astrophysical Journal
We present an analysis of three near-infrared (NIR; 1.0–2.4 μ m) spectra of the SN 2003fg–like/“super-Chandrasekhar” Type Ia supernovae (SNe Ia) SN 2009dc, SN 2020hvf, and SN 2022pul at respective phases of +372, +296, and +294 days relative to the epoch
J. O’Hora, C. Ashall, M. Shahbandeh, E. Hsiao, P. Hoeflich, M. D. Stritzinger, L. Galbany, E. Baron, J. DerKacy, S. Kumar, J. Lu, K. Medler, B. Shappee   +12 more
doaj   +1 more source

Observational constraints on the progenitor of core-collapse supernovae [PDF]

, 2016
It is well-known that some massive stars evolve to an end state which results in the collapse of the stellar core, as the hydrostatic pressure can no longer support gravity, leading to powerful explosions called supernovae (SNe).
ELIAS DE LA ROSA, NANCY DEL CARMEN
core   +1 more source

The gamma-ray signal from type IIP core-collapse supernovae [PDF]

, 2021
International audienceThe shock wave resulting from the core-collapse of a massive star can accelerate particles up to PeV energies in the first few days to weeks after the explosion.
Cristofari, Pierre, Renaud, Matthieu, Dwarkadas, Vikram, Pierre Cristofari, Alexandre Marcowith, Vikram Dwarkadas, Vincent Tatischeff, Marcowith, Alexandre, Tatischeff, Vincent, Matthieu Renaud   +9 more
core   +1 more source

The Progenitor of the S147 Supernova Remnant

The Astrophysical Journal
The supernova remnant (SNR) S147 contains the pulsar PSR J0538+2817 and a likely unbound binary companion, HD 37424. It is the only good Galactic candidate for a binary unbound by a core-collapse supernova.
Elvira Cruz-Cruz, Christopher S. Kochanek   +1 more
doaj   +1 more source

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, Volume 43, Issue 3, Page 1212-1228, May/June 2026.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source

Strange matter in core-collapse supernovae [PDF]

, 2012
We discuss the possible impact of strange quark matter on the evolution of core-collapse supernovae with emphasis on low critical densities for the quark–hadron phase transition.
I. Sagert, Thielemann, F. -K., Fischer, T., Schaffner-Bielich, J., Sagert, I., F. K. Thielemann, T. Fischer, M. Hempel, PAGLIARA, Giuseppe, J. Schaffner Bielich, Pagliara, G., M. Liebendörfer, Hempel, M.   +12 more
core   +1 more source

The Effects of Thomson Scattering and Chemical Mixing on Early-time Light Curves of Double-peaked Type IIb Supernovae

The Astrophysical Journal, 2023
Previous numerical simulations of double-peaked Type IIb supernova (SN IIb) light curves have demonstrated that the radius and mass of the hydrogen-rich envelope of the progenitor star can significantly influence the brightness and timescale of the early-
Seong Hyun Park, Sung-Chul Yoon, Sergei Blinnikov   +2 more
doaj   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Hydrogen-poor Superluminous Supernovae in the Nebular Phase: Spectral Diversity Due to Ejecta Ionization as a Probe of the Power Source

The Astrophysical Journal
We present a large sample of 39 nebular-phase optical spectra of 25 hydrogen-poor superluminous supernovae (SLSNe-I) and jointly analyze them with previously published spectra of 12 events.
Peter K. Blanchard, Edo Berger, Sebastian Gomez, Matt Nicholl, Ryan Chornock, Harsh Kumar, Raffaella Margutti, Daichi Hiramatsu, Huei Sears   +8 more
doaj   +1 more source