scholarly journals Cosmic core-collapse supernovae from upcoming sky surveys

2009 ◽  
Vol 2009 (01) ◽  
pp. 047-047 ◽  
Author(s):  
Amy Lien ◽  
Brian D Fields
Keyword(s):  
Core Collapse ◽  
Sky Surveys

Seti Figure of Merit

1997 ◽  
Vol 161 ◽  
pp. 711-717 ◽  
Author(s):  
John W. Dreher ◽  
D. Kent Cullers
Keyword(s):  
Figure Of Merit ◽  
Qualitative Difference ◽  
Current Generation ◽  
Detection Range ◽  
Sky Surveys ◽  
Independent Observations ◽  
Good For

AbstractWe develop a figure of merit for SETI observations which is anexplicitfunction of the EIRP of the transmitters, which allows us to treat sky surveys and targeted searches on the same footing. For each EIRP, we calculate the product of terms measuring the number of stars within detection range, the range of frequencies searched, and the number of independent observations for each star. For a given set of SETI observations, the result is a graph of merit versus transmitter EIRP. We apply this technique to several completed and ongoing SETI programs. The results provide a quantitative confirmation of the expected qualitative difference between sky surveys and targeted searches: the Project Phoenix targeted search is good for finding transmitters in the 109to 1014W range, while the sky surveys do their best at higher powers. Current generation optical SETI is not yet competitive with microwave SETI.

scholarly journals Turbulence Generation by Shock-Acoustic-Wave Interaction in Core-Collapse Supernovae

Particles ◽  
2018 ◽  
Vol 1 (1) ◽  
pp. 7 ◽  
Author(s):  
Ernazar Abdikamalov ◽  
César Huete ◽  
Ayan Nussupbekov ◽  
Shapagat Berdibek
Keyword(s):  
Acoustic Wave ◽  
Wave Interaction ◽  
Core Collapse ◽  
Turbulence Generation

scholarly journals Core-collapse supernovae stymie secret neutrino interactions

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
Shashank Shalgar ◽  
Irene Tamborra ◽  
Mauricio Bustamante
Keyword(s):  
Core Collapse ◽  
Neutrino Interactions

scholarly journals Deep learning for core-collapse supernova detection

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
M. López ◽  
I. Di Palma ◽  
M. Drago ◽  
P. Cerdá-Durán ◽  
F. Ricci
Keyword(s):  
Deep Learning ◽  
Core Collapse ◽  
Core Collapse Supernova

scholarly journals Charged-particle branching ratios above the neutron threshold in F19 : Constraining N15 production in core-collapse supernovae

2021 ◽  
Vol 103 (3) ◽  
Author(s):  
P. Adsley ◽  
F. Hammache ◽  
N. de Séréville ◽  
V. Alcindor ◽  
M. Assié ◽  
...  
Keyword(s):  
Charged Particle ◽  
Branching Ratios ◽  
Core Collapse

scholarly journals Fokker-Planck Models for Rotating Stellar Systems

1996 ◽  
Vol 174 ◽  
pp. 363-364 ◽  
Author(s):  
Christian Einsel ◽  
Rainer Spurzem
Keyword(s):  
Initial Conditions ◽  
Planck Equation ◽  
Rotational Energy ◽  
Momentum Transport ◽  
Core Collapse ◽  
Initial Model ◽  
Fundamental Parameters ◽  
Angular Momentum Transport ◽  
Collapse Phase ◽  
Fokker Planck

Observations of Globular Cluster ellipticity distributions related to some fundamental parameters give strong evidence for a decay of rotational energy in these systems with time. In order to study the effectiveness of angular momentum transport (or loss, resp.) a code has been written which solves the Fokker-Planck equation in (E, Jz)-space and follows the evolution from some initial conditions through core collapse (and possibly gravothermal oscillations) up to the post-collapse phase. For the purpose of comparability with N-body simulations rotating initial model configurations according to the prescriptions of Lupton & Gunn (1987) have been constructed. These models are intended to continue previous work by Goodman (1983, Fokker-Planck) and Akiyama & Sugimoto (1989, N-Body). In this contribution the derivation of the flux coefficients is given.

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