Zobrazeno 1 - 10
of 173
pro vyhledávání: '"Couch, Sean M."'
Publikováno v:
A&A 687, A55 (2024)
In this work we extended an energy-integrated neutrino transport method to facilitate efficient, yet precise, modeling of compact astrophysical objects. We particularly focus on core-collapse supernovae. We implemented a gray neutrino-transport frame
Externí odkaz:
http://arxiv.org/abs/2402.18303
Autor:
Grohs, Evan, Richers, Sherwood, Couch, Sean M., Foucart, Francois, Froustey, Julien, Kneller, Jim, McLaughlin, Gail
Publikováno v:
ApJ 963 (2024) 1, 11
Multi-messenger astrophysics has produced a wealth of data with much more to come in the future. This enormous data set will reveal new insights into the physics of core collapse supernovae, neutron star mergers, and many other objects where it is ac
Externí odkaz:
http://arxiv.org/abs/2309.00972
Autor:
Pajkos, Michael A., VanCamp, Steven J., Pan, Kuo-Chuan, Vartanyan, David, Deppe, Nils, Couch, Sean M.
We analyze the directional dependence of the gravitational wave (GW) emission from 15 3D neutrino radiation hydrodynamic simulations of core-collapse supernovae. Using spin weighted spherical harmonics, we develop a new analytic technique to quantify
Externí odkaz:
http://arxiv.org/abs/2306.01919
We explore the effects of rotation on convective carbon, oxygen, and silicon shell burning during the late stages of evolution in a 20 M-circle dot star. Using the Modules for Experiments in Stellar Astrophysics we construct one-dimensional (1D) stel
Externí odkaz:
http://hdl.handle.net/10150/621238
http://arizona.openrepository.com/arizona/handle/10150/621238
http://arizona.openrepository.com/arizona/handle/10150/621238
Connecting observations of core-collapse supernova explosions to the properties of their massive star progenitors is a long-sought, and challenging, goal of supernova science. Recently, Barker et al. (2022) presented bolometric light curves for a lan
Externí odkaz:
http://arxiv.org/abs/2211.05789
Autor:
Grohs, Evan, Richers, Sherwood, Couch, Sean M., Foucart, Francois, Kneller, James P., McLaughlin, G. C.
The flavor evolution of neutrinos in core collapse supernovae and neutron star mergers is a critically important unsolved problem in astrophysics. Following the electron flavor evolution of the neutrino system is essential for calculating the thermod
Externí odkaz:
http://arxiv.org/abs/2207.02214
Autor:
Johnston, Zac, Wasik, Sheldon, Titus, Rachel, Warren, MacKenzie L., O'Connor, Evan P., Zegers, Remco, Couch, Sean M.
Publikováno v:
ApJ 939 15 (2022)
Recent studies have highlighted the sensitivity of core-collapse supernovae (CCSNe) models to electron-capture (EC) rates on neutron-rich nuclei near the N=50 closed-shell region. In this work, we perform a large suite of one-dimensional CCSN simulat
Externí odkaz:
http://arxiv.org/abs/2202.09370
We present neutrino-transport hydrodynamic simulations of electron-capture supernovae (ECSNe) in \texttt{FLASH} with new two-dimensional (2D) collapsing progenitor models. These progenitor models feature the 2D modelling of oxygen-flame propagation u
Externí odkaz:
http://arxiv.org/abs/2112.15257
Autor:
Andersen, Oliver Eggenberger, Zha, Shuai, Schneider, André da Silva, Betranhandy, Aurore, Couch, Sean M., O'Connor, Evan P.
Gravitational waves (GWs) provide unobscured insight into the birthplace of neutron stars (NSs) and black holes in core-collapse supernovae (CCSNe). The nuclear equation of state (EOS) describing these dense environments is yet uncertain, and variati
Externí odkaz:
http://arxiv.org/abs/2106.09734
Autor:
Barker, Brandon L., Harris, Chelsea E., Warren, MacKenzie L., O'Connor, Evan P., Couch, Sean M.
Observations of core-collapse supernovae (CCSNe) reveal a wealth of information about the dynamics of the supernova ejecta and its composition but very little direct information about the progenitor. Constraining properties of the progenitor and the
Externí odkaz:
http://arxiv.org/abs/2102.01118