Self-consistent 3D Radiative Transfer for Kilonovae: Directional Spectra from Merger Simulations

Autor: Luke J. Shingles, Christine E. Collins, Vimal Vijayan, Andreas Flörs, Oliver Just, Gerrit Leck, Zewei Xiong, Andreas Bauswein, Gabriel Martínez-Pinedo, Stuart A. Sim

Publikováno v: The Astrophysical Journal Letters, Vol 954, Iss 2, p L41 (2023)

We present 3D 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-dependent thermali

Externí odkaz: https://doaj.org/article/e0679274db2f4bde805e8aa786fecdeb

Modelling the ionisation state of Type Ia supernovae in the nebular-phase

Autor: Luke J Shingles, Andreas Flörs, Stuart A Sim, Christine E Collins, Friedrich K Röpke, Ivo R Seitenzahl, Ken J Shen

Publikováno v: Shingles, L J, Flörs, A, Sim, S A, Collins, C E, Röpke, F K, Seitenzahl, I R & Shen, K J 2022, ' Modelling the ionisation state of Type Ia supernovae in the nebular-phase ', Monthly Notices of the Royal Astronomical Society, vol. 512, no. 4, pp. 6150–6163 . https://doi.org/10.1093/mnras/stac902
Monthly notices of the Royal Astronomical Society 512(4), 6150-6163 (2022). doi:10.1093/mnras/stac902
Monthly Notices of the Royal Astronomical Society

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: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::911586379ad972181dab064f43e32175
https://pure.qub.ac.uk/en/publications/54ed9225-bac5-43c5-b114-873fae610161

StaNdaRT: a repository of standardised test models and outputs for supernova radiative transfer

Autor: Stéphane Blondin, Sergei Blinnikov, Fionntan P. Callan, Christine E. Collins, Luc Dessart, Wesley Even, Andreas Flörs, Andrew G. Fullard, D. John Hillier, Anders Jerkstrand, Daniel Kasen, Boaz Katz, Wolfgang Kerzendorf, Alexandra Kozyreva, Jack O’Brien, Ezequiel A. Pássaro, Nathaniel Roth, Ken J. Shen, Luke Shingles, Stuart A. Sim, Jaladh Singhal, Isaac G. Smith, Elena Sorokina, Victor P. Utrobin, Christian Vogl, Marc Williamson, Ryan Wollaeger, Stan E. Woosley, Nahliel Wygoda

Publikováno v: Astronomy and astrophysics 668, A163 (2022). doi:10.1051/0004-6361/202244134
Blondin, S, Blinnikov, S, Callan, F P, Collins, C E, Dessart, L, Even, W, Flörs, A, Fullard, A G, Hillier, D J, Jerkstrand, A, Kasen, D, Katz, B, Kerzendorf, W, Kozyreva, A, O'Brien, J, Pássaro, E A, Roth, N, Shen, K J, Shingles, L, Sim, S A, Singhal, J, Smith, I G, Sorokina, E, Utrobin, V P, Vogl, C, Williamson, M, Wollaeger, R, Woosley, S E & Wygoda, N 2022, ' StaNdaRT: a repository of standardised test models and outputs for supernova radiative transfer ', Astronomy and Astrophysics, vol. 668, A163 . https://doi.org/10.1051/0004-6361/202244134
Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, 2022, 668 (A163), ⟨10.1051/0004-6361/202244134⟩
Astronomy and Astrophysics-A&A, 2022, 668, ⟨10.1051/0004-6361/202244134⟩

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: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b8d30e51e00aeb45ca7a3a4b351bb93
https://repository.gsi.de/record/250612

Constraints on the presence of platinum and gold in the spectra of the kilonova AT2017gfo

Autor: Connor Ballance, M McCann, Stuart A. Sim, J. Gillanders, S. J. Smartt

Publikováno v: Gillanders, J H, McCann, M, Sim, S A, Smartt, S J & Ballance, C P 2021, ' Constraints on the presence of platinum and gold in the spectra of the kilonova AT2017gfo ', Monthly Notices of the Royal Astronomical Society, vol. 506, no. 3, pp. 3560–3577 . https://doi.org/10.1093/mnras/stab1861

Binary neutron star mergers are thought to be one of the dominant sites of production for rapid neutron capture elements, including platinum and gold. Since the discovery of the binary neutron star merger GW170817, and its associated kilonova AT2017g

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2f46a303ea6b42ae2a524721c379443
https://pure.qub.ac.uk/en/publications/constraints-on-the-presence-of-platinum-and-gold-in-the-spectra-of-the-kilonova-at2017gfo(a8efe95a-3fc5-46e0-bad4-fc2badc97442).html

Metallicity-dependent nucleosynthetic yields of Type Ia supernovae originating from double detonations of sub-M$_{\text{Ch}}$ white dwarfs

Autor: Florian Lach, Friedrich K. Roepke, Ivo R. Seitenzahl, Sabrina Gronow, Stuart A. Sim, Christine E. Collins, Benoit Côté

Publikováno v: Astronomy and astrophysics 656, A94-(2021). doi:10.1051/0004-6361/202140881
Gronow, S, Côté, B, Lach, F, Seitenzahl, I R, Collins, C E, Sim, S A & Röpke, F K 2021, ' Metallicity-dependent nucleosynthetic yields of Type Ia supernovae originating from double detonations of sub-M Ch white dwarfs ', Astronomy and Astrophysics, vol. 656, A94 . https://doi.org/10.1051/0004-6361/202140881

Double detonations in sub-Chandrasekhar mass carbon-oxygen white dwarfs with helium shell are a potential explosion mechanism for a Type Ia supernova (SNe Ia). It comprises a shell detonation and subsequent core detonation. The focus of our study is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1ee543c59dcd366b14c01c4c77130226
http://arxiv.org/abs/2103.14050