Papers
Topics
Authors
Recent
Gemini 2.5 Flash
Gemini 2.5 Flash
139 tokens/sec
GPT-4o
7 tokens/sec
Gemini 2.5 Pro Pro
46 tokens/sec
o3 Pro
4 tokens/sec
GPT-4.1 Pro
38 tokens/sec
DeepSeek R1 via Azure Pro
28 tokens/sec
2000 character limit reached

Global features of fast neutrino-flavor conversion in binary neutron star merger (2306.10108v2)

Published 16 Jun 2023 in astro-ph.HE, gr-qc, and hep-ph

Abstract: Binary neutron star merger (BNSM) offers an environment where fast neutrino-flavor conversion (FFC) can vividly occur, that potentially leads to a considerable change of neutrino radiation field. In this Letter, we investigate global features of FFC by general relativistic quantum kinetic neutrino transport simulations in spatial axisymmetry. Our result suggests that global advection of neutrinos plays a crucial role in FFC dynamics. Although flavor conversions occur ubiquitously in the early phase, they can be active only in a narrow region in the late phase. This region includes an ELN-XLN Zero Surface (EXZS), corresponding to a surface where electron-neutrinos lepton number (ELN) equals to heavy-leptonic one (XLN). The EXZS is not stationary, but dynamically evolve in a time scale of global advection. We also find that neutrinos can undergo a flavor swap when they pass through the EXZS, resulting in qualitatively different neutrino radiation fields between both sides of EXZS. Our result suggests that EXZS is one of the key ingredients to characterize FFC in BNSM.

Definition Search Book Streamline Icon: https://streamlinehq.com
References (33)
  1. B. P. Abbott, R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya,  and et al., “GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral,” Physical Review Letters 119, 161101 (2017a), arXiv:1710.05832 [gr-qc] .
  2. B. P. Abbott, R. Abbott, T. D. Abbott, F. Acernese, K. Ackley, C. Adams, T. Adams, P. Addesso, R. X. Adhikari, V. B. Adya,  and et al., “Multi-messenger Observations of a Binary Neutron Star Merger,” ApJ 848, L12 (2017b), arXiv:1710.05833 [astro-ph.HE] .
  3. Luca Baiotti and Luciano Rezzolla, “Binary neutron star mergers: a review of Einstein’s richest laboratory,” Reports on Progress in Physics 80, 096901 (2017), arXiv:1607.03540 [gr-qc] .
  4. Masaru Shibata and Kenta Hotokezaka, “Merger and Mass Ejection of Neutron Star Binaries,” Annual Review of Nuclear and Particle Science 69, 41–64 (2019), arXiv:1908.02350 [astro-ph.HE] .
  5. David Radice, Sebastiano Bernuzzi,  and Albino Perego, “The Dynamics of Binary Neutron Star Mergers and GW170817,” Annual Review of Nuclear and Particle Science 70, 95–119 (2020), arXiv:2002.03863 [astro-ph.HE] .
  6. Raffaella Margutti and Ryan Chornock, “First Multimessenger Observations of a Neutron Star Merger,” ARA&A 59, 155–202 (2021), arXiv:2012.04810 [astro-ph.HE] .
  7. Y. L. Zhu, A. Perego,  and G. C. McLaughlin, “Matter-neutrino resonance transitions above a neutron star merger remnant,” Phys. Rev. D 94, 105006 (2016), arXiv:1607.04671 [hep-ph] .
  8. Meng-Ru Wu and Irene Tamborra, “Fast neutrino conversions: Ubiquitous in compact binary merger remnants,” Phys. Rev. D 95, 103007 (2017), arXiv:1701.06580 [astro-ph.HE] .
  9. Alexey Vlasenko and G. C. McLaughlin, “Matter-neutrino resonance in a multiangle neutrino bulb model,” Phys. Rev. D 97, 083011 (2018), arXiv:1801.07813 [astro-ph.HE] .
  10. Manu George, Meng-Ru Wu, Irene Tamborra, Ricard Ardevol-Pulpillo,  and Hans-Thomas Janka, “Fast neutrino flavor conversion, ejecta properties, and nucleosynthesis in newly-formed hypermassive remnants of neutron-star mergers,” Phys. Rev. D 102, 103015 (2020), arXiv:2009.04046 [astro-ph.HE] .
  11. Xinyu Li and Daniel M. Siegel, “Neutrino Fast Flavor Conversions in Neutron-Star Postmerger Accretion Disks,” Phys. Rev. Lett. 126, 251101 (2021), arXiv:2103.02616 [astro-ph.HE] .
  12. Sherwood Richers, “Evaluating approximate flavor instability metrics in neutron star mergers,” Phys. Rev. D 106, 083005 (2022), arXiv:2206.08444 [astro-ph.HE] .
  13. Oliver Just, Sajad Abbar, Meng-Ru Wu, Irene Tamborra, Hans-Thomas Janka,  and Francesco Capozzi, “Fast neutrino conversion in hydrodynamic simulations of neutrino-cooled accretion disks,” Phys. Rev. D 105, 083024 (2022), arXiv:2203.16559 [astro-ph.HE] .
  14. Evan Grohs, Sherwood Richers, Sean M. Couch, Francois Foucart, James P. Kneller,  and G. C. McLaughlin, “Neutrino Fast Flavor Instability in three dimensions for a Neutron Star Merger,” arXiv e-prints , arXiv:2207.02214 (2022), arXiv:2207.02214 [hep-ph] .
  15. Zewei Xiong, Lucas Johns, Meng-Ru Wu,  and Huaiyu Duan, “Collisional flavor instability in dense neutrino gases,” arXiv e-prints , arXiv:2212.03750 (2022), arXiv:2212.03750 [hep-ph] .
  16. R. F. Sawyer, “Speed-up of neutrino transformations in a supernova environment,” Phys. Rev. D 72, 045003 (2005), arXiv:hep-ph/0503013 [astro-ph] .
  17. Irene Tamborra and Shashank Shalgar, “New Developments in Flavor Evolution of a Dense Neutrino Gas,” Annual Review of Nuclear and Particle Science 71, 165–188 (2021), arXiv:2011.01948 [astro-ph.HE] .
  18. Francesco Capozzi and Ninetta Saviano, ‘‘Neutrino Flavor Conversions in High-Density Astrophysical and Cosmological Environments,” Universe 8, 94 (2022), arXiv:2202.02494 [hep-ph] .
  19. Sherwood Richers and Manibrata Sen, “Fast Flavor Transformations,” arXiv e-prints , arXiv:2207.03561 (2022), arXiv:2207.03561 [astro-ph.HE] .
  20. Maria Cristina Volpe, “Neutrinos from dense: flavor mechanisms, theoretical approaches, observations, new directions,” arXiv e-prints , arXiv:2301.11814 (2023), arXiv:2301.11814 [hep-ph] .
  21. Ian Padilla-Gay, Shashank Shalgar,  and Irene Tamborra, “Multi-dimensional solution of fast neutrino conversions in binary neutron star merger remnants,” J. Cosmology Astropart. Phys 2021, 017 (2021), arXiv:2009.01843 [astro-ph.HE] .
  22. Rodrigo Fernández, Sherwood Richers, Nicole Mulyk,  and Steven Fahlman, “Fast flavor instability in hypermassive neutron star disk outflows,” Phys. Rev. D 106, 103003 (2022), arXiv:2207.10680 [astro-ph.HE] .
  23. Hiroki Nagakura and Masamichi Zaizen, “Time-Dependent and Quasisteady Features of Fast Neutrino-Flavor Conversion,” Phys. Rev. Lett. 129, 261101 (2022), arXiv:2206.04097 [astro-ph.HE] .
  24. Hiroki Nagakura and Masamichi Zaizen, “Connecting small-scale to large-scale structures of fast neutrino-flavor conversion,” Phys. Rev. D 107, 063033 (2023a), arXiv:2211.01398 [astro-ph.HE] .
  25. Hiroki Nagakura, “Roles of Fast Neutrino-Flavor Conversion on the Neutrino-Heating Mechanism of Core-Collapse Supernova,” Phys. Rev. Lett. 130, 211401 (2023), arXiv:2301.10785 [astro-ph.HE] .
  26. Lucas Johns and Zewei Xiong, “Collisional instabilities of neutrinos and their interplay with fast flavor conversion in compact objects,” Phys. Rev. D 106, 103029 (2022), arXiv:2208.11059 [hep-ph] .
  27. Chinami Kato and Hiroki Nagakura, “Effects of energy-dependent scatterings on fast neutrino flavor conversions,” Phys. Rev. D 106, 123013 (2022), arXiv:2207.09496 [astro-ph.HE] .
  28. Chinami Kato, Hiroki Nagakura,  and Masamichi Zaizen, “Flavor conversions with energy-dependent neutrino emission and absorption,” Phys. Rev. D 108, 023006 (2023), arXiv:2303.16453 [astro-ph.HE] .
  29. Hiroki Nagakura, “General-relativistic quantum-kinetics neutrino transport,” Phys. Rev. D 106, 063011 (2022), arXiv:2206.04098 [astro-ph.HE] .
  30. Kohsuke Sumiyoshi, Sho Fujibayashi, Yuichiro Sekiguchi,  and Masaru Shibata, “Properties of Neutrino Transfer in a Deformed Remnant of a Neutron Star Merger,” ApJ 907, 92 (2021), arXiv:2010.10865 [astro-ph.HE] .
  31. Masamichi Zaizen and Hiroki Nagakura, “Characterizing quasisteady states of fast neutrino-flavor conversion by stability and conservation laws,” Phys. Rev. D 107, 123021 (2023), arXiv:2304.05044 [astro-ph.HE] .
  32. Basudeb Dasgupta, Amol Dighe, Alessandro Mirizzi,  and Georg Raffelt, “Collective neutrino oscillations in nonspherical geometry,” Phys. Rev. D 78, 033014 (2008), arXiv:0805.3300 [hep-ph] .
  33. Hiroki Nagakura and Masamichi Zaizen, “Connecting small-scale to large-scale structures of fast neutrino-flavor conversion,” Phys. Rev. D 107, 063033 (2023b), arXiv:2211.01398 [astro-ph.HE] .
Citations (13)
View on Semantic Scholar

Summary

We haven't generated a summary for this paper yet.

Ai Sparkles Streamline Icon: https://streamlinehq.com Summarize Now