Zobrazeno 1 - 10
of 576
pro vyhledávání: '"Collins, Christine A"'
Autor:
Sneppen, Albert, Just, Oliver, Bauswein, Andreas, Damgaard, Rasmus, Watson, Darach, Shingles, Luke J., Collins, Christine E., Sim, Stuart A., Xiong, Zewei, Martinez-Pinedo, Gabriel, Soultanis, Theodoros, Vijayan, Vimal
The time until black hole formation in a binary neutron-star (NS) merger contains invaluable information about the nuclear equation of state (EoS) but has thus far been difficult to measure. We propose a new way to constrain the merger remnant's NS l
Externí odkaz:
http://arxiv.org/abs/2411.03427
Autor:
Sneppen, Albert, Damgaard, Rasmus, Watson, Darach, Collins, Christine E., Shingles, Luke, Sim, Stuart A.
The spectral features observed in kilonovae (KNe) reveal the elemental composition and the velocity structures of matter ejected from neutron star mergers. In the spectra of the kilonova AT2017gfo, a P Cygni line at about 1$\mu$m has been linked to S
Externí odkaz:
http://arxiv.org/abs/2407.12907
Autor:
Collins, Christine E., Shingles, Luke J., Bauswein, Andreas, Sim, Stuart A., Soultanis, Theodoros, Vijayan, Vimal, Floers, Andreas, Just, Oliver, Leck, Gerrit, Lioutas, Georgios, Martínez-Pinedo, Gabriel, Sneppen, Albert, Watson, Darach, Xiong, Zewei
Recent analysis of the kilonova, AT2017gfo, has indicated that this event was highly spherical. This may challenge hydrodynamics simulations of binary neutron star mergers, which usually predict a range of asymmetries, and radiative transfer simulati
Externí odkaz:
http://arxiv.org/abs/2309.05579
Autor:
Collins, Christine E., Sim, Stuart A., Shingles, Luke. J., Gronow, Sabrina, Roepke, Friedrich K., Pakmor, Ruediger, Seitenzahl, Ivo R., Kromer, Markus
The double detonation is a widely discussed mechanism to explain Type Ia supernovae from explosions of sub-Chandrasekhar mass white dwarfs. In this scenario, a helium detonation is ignited in a surface helium shell on a carbon/oxygen white dwarf, whi
Externí odkaz:
http://arxiv.org/abs/2307.08660
Autor:
Shingles, Luke J., Collins, Christine E., Vijayan, Vimal, Flörs, Andreas, Just, Oliver, Leck, Gerrit, Xiong, Zewei, Bauswein, Andreas, Martínez-Pinedo, Gabriel, Sim, Stuart A.
Publikováno v:
2023, ApJL, 954, L41
We present three-dimensional radiative transfer calculations for the ejecta from a neutron star merger that include line-by-line opacities for tens of millions of bound-bound transitions, composition from an r-process nuclear network, and time-depend
Externí odkaz:
http://arxiv.org/abs/2306.17612
Autor:
Blondin, Stéphane, Blinnikov, Sergei, Callan, Fionntan P., Collins, Christine E., Dessart, Luc, Even, Wesley, Flörs, Andreas, Fullard, Andrew G., Hillier, D. John, Jerkstrand, Anders, Kasen, Daniel, Katz, Boaz, Kerzendorf, Wolfgang, Kozyreva, Alexandra, O'Brien, Jack, Pássaro, Ezequiel A., Roth, Nathaniel, Shen, Ken J., Shingles, Luke, Sim, Stuart A., Singhal, Jaladh, Smith, Isaac G., Sorokina, Elena, Utrobin, Victor P., Vogl, Christian, Williamson, Marc, Wollaeger, Ryan, Woosley, Stan E., Wygoda, Nahliel
Publikováno v:
A&A 668, A163 (2022)
We present the first results of a comprehensive supernova (SN) radiative-transfer (RT) code-comparison initiative (StaNdaRT), where the emission from the same set of standardized test models is simulated by currently-used RT codes. A total of ten cod
Externí odkaz:
http://arxiv.org/abs/2209.11671
Autor:
Collins, Christine E., Bauswein, Andreas, Sim, Stuart A., Vijayan, Vimal, Martínez-Pinedo, Gabriel, Just, Oliver, Shingles, Luke J., Kromer, Markus
The detection of GW170817 and the accompanying electromagnetic counterpart, AT2017gfo, have provided an important set of observational constraints for theoretical models of neutron star mergers, nucleosynthesis, and radiative transfer for kilonovae.
Externí odkaz:
http://arxiv.org/abs/2209.05246
Double detonations of sub-Chandrasekhar mass white dwarfs are a promising explosion scenario for Type Ia supernovae, whereby a detonation in a surface helium shell triggers a secondary detonation in a carbon-oxygen core. Recent work has shown that lo
Externí odkaz:
http://arxiv.org/abs/2209.04305
Autor:
Shingles, Luke J., Flörs, Andreas, Sim, Stuart A., Collins, Christine E., Roepke, Friedrich K., Seitenzahl, Ivo R., Shen, Ken J.
The nebular spectra of Type Ia supernovae ($\gtrapprox$ 100 days after explosion) consist mainly of emission lines from singly- and doubly-ionised Fe-group nuclei. However, theoretical models for many scenarios predict that non-thermal ionisation lea
Externí odkaz:
http://arxiv.org/abs/2203.16561
Autor:
Just, Oliver, Kullmann, Ina, Goriely, Stephane, Bauswein, Andreas, Janka, Hans-Thomas, Collins, Christine E.
The majority of existing results for the kilonova (or macronova) emission from material ejected during a neutron-star (NS) merger is based on (quasi-)one-zone models or manually constructed toy-model ejecta configurations. In this study we present a
Externí odkaz:
http://arxiv.org/abs/2109.14617