Results 41 to 50 of about 80,732 (246)
Refueling the Magic Furnace: Kilonova 2017 Rewrites the Story of Element Origins
Journal of Big History, 2018 For more than half a century, we have understood element creation in the stars—described in Marcus Chown’s colorful image as “the magic furnace.” From 1958 until 2017, supernova explosions were thought to be the primary site of element creation above ...
Barry Woods
doaj +1 more source
Historical Supernovae and Supernova Remnants [PDF]
International Astronomical Union Colloquium, 1996 The oldest historical supernova (SN), recorded by ancient Chinese in 14th Century B.C. on pieces of tortoise shells or bones, is identified with the aid of modern space γ-ray observations. Hard X-rays with energy up to 20 keV were observed from IC 443 by the X-ray satellite Ginga. We infer from these observations the age of IC 443 is ∼ 1000 — 1400 yrs.
openaire +3 more sources
Confined dense circumstellar material surrounding a regular type II supernova [PDF]
Nature Physics, 2017 With the advent of new wide-field, high-cadence optical transient surveys, our understanding of the diversity of core-collapse supernovae has grown tremendously in the last decade.
O. Yaron +37 more
semanticscholar +1 more source
A Multidimensional Multicomponent Gas Dynamic with the Neutrino Transfer in Gravitational Collapse
Universe, 2022 The self-consistent problem of gravitational collapse is solved using 2D gas dynamics with taking into account the neutrino transfer in the flux-limited diffusion approximation.
Alexey G. Aksenov
doaj +1 more source
Neutrinos from Supernovas and Supernova Remnants [PDF]
AIP Conference Proceedings, 2005 Supernovae (SN) and supernova remnants (SNR) have key roles in galaxies, but their physical descriptions is still incomplete. Thus, it is of interest to study neutrino radiation to understand SN and SNR better. We will discuss: (1) The ~10 MeV thermal neutrinos that arise from core collapse SN, that were observed for SN1987A, and can be seen with ...
M.L. Costantini, Francesco Vissani
openaire +3 more sources
Is there a supernova bound on axions? [PDF]
, 2019 We present a critical assessment of the SN1987A supernova cooling bound on axions and other light particles. Core-collapse simulations used in the literature to substantiate the bound omitted from the calculation the envelope exterior to the proto ...
Nitsan Bar, Kfir Blum, G. D’Amico
semanticscholar +1 more source
Properties and Composition of Magnetized Nuclei
Particles, 2020 The properties and mass distribution of the ultramagnetized atomic nuclei which arise in heavy-ion collisions and magnetar crusts, during Type II supernova explosions and neutron star mergers are analyzed.
V.N. Kondratyev
doaj +1 more source
Searches for Violation of CPT Symmetry and Lorentz Invariance with Astrophysical Neutrinos
Universe, 2022 Neutrinos are a powerful tool for searching physics beyond the standard model of elementary particles. In this review, we present the status of the research on charge-parity-time (CPT) symmetry and Lorentz invariance violations using neutrinos emitted ...
Celio A. Moura, Fernando Rossi-Torres
doaj +1 more source
The Carnegie Supernova Project: Absolute Calibration and the Hubble Constant [PDF]
Astrophysical Journal, 2018 We present an analysis of the final data release of the Carnegie Supernova Project I, focusing on the absolute calibration of the luminosity–decline rate relation for Type Ia supernovae (SNe Ia) using new intrinsic color relations with respect to the ...
C. Burns +25 more
semanticscholar +1 more source
Entropy Generation Due to the Heat Transfer for Evolving Spherical Objects
Entropy, 2018 Heat transfer accompanying entropy generation for the evolving mini and microbubbles in solution is discussed based on the explicit solutions for the hydrodynamic equations related to the bubble motion. Even though the pressure difference between the gas
Ho-Young Kwak
doaj +1 more source