Results 31 to 40 of about 130,560 (227)

Supernovae and Supernova, Remnants

open access: yesThe Astronomical Journal, 1968
Supernovae remnants evolution, properties and galactic distribution, discussing criteria for catalog listing and remnants as X ray ...
A. Poveda, L. Woltjer
openaire   +1 more source

Supernovae and cosmology [PDF]

open access: yesNew Astronomy Reviews, 2001
These lecture notes intend to form a short pedagogical introduction to the use of typical type Ia-Supernovae (hereafter SNIa) as standard candles to determine the energy density of the universe. Problems of principle for taking SNIa as cosmological probes are pointed out, and new attempts at solving them are indicated including the empirical width ...
Signore, M., Puy, D.
openaire   +2 more sources

The high energy X-ray probe (HEX-P): science overview

open access: yesFrontiers in Astronomy and Space Sciences
To answer NASA’s call for a sensitive X-ray observatory in the 2030s, we present the High Energy X-ray Probe (HEX-P) mission concept. HEX-P is designed to provide the required capabilities to explore current scientific questions and make new discoveries ...
Javier A. García   +74 more
doaj   +1 more source

Entropy Generation Due to the Heat Transfer for Evolving Spherical Objects

open access: yesEntropy, 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

QUÍMICA ESTELAR E ESTRELAS APOCALÍPTICAS: ESTUDO COMPARATIVO

open access: yesColloquium Exactarum, 2012
All atoms existing in the Universe, except Hydrogen (H) and helium (He), arise from processes occurring in stars and their evolution. The stars transmute the H and He in other heavier elements through nuclear fusion and its process rolling, filling and ...
Nikele Milani   +3 more
doaj   +1 more source

Limit on Supernova Emission in the Brightest Gamma-Ray Burst, GRB 221009A

open access: yesThe Astrophysical Journal Letters, 2023
We present photometric and spectroscopic observations of the extraordinary gamma-ray burst (GRB) 221009A in search of an associated supernova. Some past GRBs have shown bumps in the optical light curve that coincide with the emergence of supernova ...
Manisha Shrestha   +32 more
doaj   +1 more source

Smoking supernovae [PDF]

open access: yesInternational Journal of Astrobiology, 2007
AbstractThe question ‘Are supernovae important sources of dust?’ is a contentious one. Observations with the Infrared Astronomical Satellite (IRAS) and the Infrared Space Observatory (ISO) only detected very small amounts of hot dust in supernova remnants.
Gomez, Haley Louise   +2 more
openaire   +2 more sources

Significance of neutrino-neutrino interaction in neutrino oscillation in core-collapse supernova

open access: yesBibechana, 2014
We study the possibility of neutrino-neutrino interaction inside the neutrino core of supernova (ρ ≥ 1010 g/cc) and outside the neutrinosphere. The angular dependence of the neutrino-neutrino interaction Hamiltonian causes multi-angle effects that can ...
Prabandha Nakarmi, Jeevan Jyoti Nakarmi
doaj   +3 more sources

Probing Supernova Diversity Through High-Cadence Optical Observations

open access: yesUniverse
Supernovae (SNe) are among the most energetic and transient events in the universe, offering crucial insights into stellar evolution, nucleosynthesis, and cosmic expansion.
Kuntal Misra   +8 more
doaj   +1 more source

Observing Supernova Neutrino Light Curves with Super-Kamiokande. IV. Development of SPECIAL BLEND: A New Public Analysis Code for Supernova Neutrinos

open access: yesThe Astrophysical Journal, 2023
Supernova neutrinos are invaluable signals that offer information about the interior of supernovae. Because a nearby supernova can occur at any time, preparing for future supernova neutrino observation is an urgent task.
Akira Harada   +8 more
doaj   +1 more source

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