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Pair interactions impact on CCSNe simulations Aurore Betranhandy - PowerPoint PPT Presentation

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Pair interactions impact on CCSNe simulations Aurore Betranhandy Evan OConnor Compact Object for All, Lund Feb. 11 th 2020 What are supernovae ? Collapse Feb. 11th 2020 A. Betranhandy - Compact Object for All 2 What are supernovae ?

  1. Pair interactions impact on CCSNe simulations Aurore Betranhandy Evan O’Connor Compact Object for All, Lund Feb. 11 th 2020

  2. What are supernovae ? Collapse Feb. 11th 2020 A. Betranhandy - Compact Object for All 2

  3. What are supernovae ? Collapse Bounce Feb. 11th 2020 A. Betranhandy - Compact Object for All 3

  4. What are supernovae ? Collapse Bounce Shock stalling Feb. 11th 2020 A. Betranhandy - Compact Object for All 4

  5. What are supernovae ? Collapse Bounce Shock stalling Revival ν ν Feb. 11th 2020 A. Betranhandy - Compact Object for All 5

  6. What are supernovae ? Collapse Bounce Shock stalling Revival Explosion ν ν Feb. 11th 2020 A. Betranhandy - Compact Object for All 6

  7. Codes and Progenitors ● NuLib Open source neutrino interactions library ● GR1D General relativity hydrodynamic M1 transport ● Progenitors z9.6 : 9.6 M ☉ progenitor, explodes in 1D s20 : 20 M ☉ progenitor, well studied Feb. 11th 2020 A. Betranhandy - Compact Object for All 7

  8. Pair interactions ● Electron-positron annihilation e + e - Fit version Kernels O’Connor (2015) Bruenn et al. (1985) ● Nucleon-nucleon Bremsstrahlung Fit version Kernels Burrows et al. (2006) One Pion Exchange (OPE) Hannestad and Rafgelt (1998) T-matrix Guo et al. (2019) Feb. 11th 2020 A. Betranhandy - Compact Object for All 8

  9. z9.6 shock evolution Feb. 11th 2020 A. Betranhandy - Compact Object for All 9

  10. Mass accretion history Feb. 11th 2020 A. Betranhandy - Compact Object for All 10

  11. z9.6 mean neutrino energy Feb. 11th 2020 A. Betranhandy - Compact Object for All 11

  12. z9.6 neutrino luminosities Feb. 11th 2020 A. Betranhandy - Compact Object for All 12

  13. s20 neutrino quantities Feb. 11th 2020 A. Betranhandy - Compact Object for All 13

  14. s20 shock evolution Feb. 11th 2020 A. Betranhandy - Compact Object for All 14

  15. e + e - Impact of ● Both progenitors show a major impact of the electron-positron annihilation ● Higher luminosities x Feb. 11th 2020 A. Betranhandy - Compact Object for All 15

  16. Impact of ● No clear trend, varies depending on the progenitor ● Still shows a difgerence depending on the treatment Feb. 11th 2020 A. Betranhandy - Compact Object for All 16

  17. Conclusion ● Electron-positron annihilation needs to be treated in an accurate way ● Bremsstrahlung treatments seems to have lower impact Feb. 11th 2020 A. Betranhandy - Compact Object for All 17

  18. Looking forward ● Expand the study to higher dimensions ● Adding neutrino fmavor change via scattering Feb. 11th 2020 A. Betranhandy - Compact Object for All 18

  19. Thank you ! Feb. 11th 2020 A. Betranhandy - Compact Object for All 19

  20. Additional s20 z9.6 Feb. 11th 2020 A. Betranhandy - Compact Object for All 20

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