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相关论文: Fast Neutrino Flavor Conversions can Help and Hind…

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We explore the impact of small-scale flavor conversions of neutrinos, the so-called fast flavor conversions (FFCs), on the dynamical evolution and neutrino emission of core-collapse supernovae (CCSNe). In order to do that, we implement FFCs…

高能天体物理现象 · 物理学 2023-05-31 Jakob Ehring , Sajad Abbar , Hans-Thomas Janka , Georg Raffelt , Irene Tamborra

A new chapter is opening in the theory of core-collapse supernovae and neutron star mergers as simulations of these events begin to incorporate fast flavor conversion (FFC) and other forms of neutrino flavor mixing. Using numerical…

高能天体物理现象 · 物理学 2026-05-14 Erick Urquilla , Lucas Johns

In this {\it Letter}, we present a compelling and robust argument for the roles of neutrino fast flavor conversion (FFC) in the explosion mechanism of core-collapse supernova (CCSN), combining the {\it multi-angle} FFC subgrid model rooted…

Fast flavor conversions (FFCs) of neutrinos, which can occur in core-collapse supernovae (CCSNe), are multiangle effects. They depend on the angular distribution of the neutrino's electron lepton number (ELN). In this work, we present a…

There is mounting evidence that neutrinos undergo fast flavor conversion (FFC) in core-collapse supernova (CCSN). In this letter, we investigate the roles of stellar rotation on the occurrence of FFC by carrying out axisymmetric CCSN…

高能天体物理现象 · 物理学 2022-01-26 Akira Harada , Hiroki Nagakura

One of the greatest uncertainties in any modeling of inner engine of core-collapse supernova (CCSN) is neutrino flavor conversions driven by neutrino self-interactions. We carry out large-scale numerical simulations of multi-energy,…

高能天体物理现象 · 物理学 2023-06-07 Hiroki Nagakura

Fast neutrino-flavor conversion (FFC) is a possible game-changing ingredient in core-collapse supernova (CCSN) theory. In this paper, we examine the impact of FFC on explosive nucleosynthesis by including the effects of FFC in conjunction…

高能天体物理现象 · 物理学 2023-01-04 Shin-ichiro Fujimoto , Hiroki Nagakura

Mounting evidence indicates that neutrinos likely undergo fast flavor conversion (FFC) in at least some core-collapse supernovae. Outcomes of FFC, however, remain highly uncertain. Here we study the cascade of flavor-field power from large…

高能物理 - 唯象学 · 物理学 2020-11-25 Lucas Johns , Hiroki Nagakura , George M. Fuller , Adam Burrows

Despite the theoretical indication that fast neutrino-flavor conversion (FFC) ubiquitously occurs in core-collapse supernova and binary neutron star merger, the lack of global simulations has been the greatest obstacle to study their…

高能天体物理现象 · 物理学 2022-12-28 Hiroki Nagakura , Masamichi Zaizen

Core-collapse supernovae undergoing a first-order quantum chromodynamics (QCD) phase transition experience the collapse of the central proto-neutron star that leads to a second bounce. This event is accompanied by the release of a second…

高能天体物理现象 · 物理学 2025-10-01 Zewei Xiong , Meng-Ru Wu , Noshad Khosravi Largani , Tobias Fischer , Gabriel Martínez-Pinedo

In this work, we explore in a consistent fashion the effects of fast flavor conversion (FFC) in 1D and 2D core-collapse supernova (CCSN) simulations. In addition, we investigate the impact of various angular reconstruction methods and…

高能天体物理现象 · 物理学 2025-11-27 Tianshu Wang , Adam Burrows

We assert that non-linear features of fast neutrino-flavor conversion (FFC) can be qualitatively different between core-collapse supernovae (CCSNe) and binary neutron star mergers (BNSMs). This argument arises from recent global FFC…

高能天体物理现象 · 物理学 2025-05-22 Masamichi Zaizen , Hiroki Nagakura

Fast neutrino flavor conversions (FFCs) and collisional flavor instabilities (CFIs) potentially affect the dynamics of core-collapse supernovae (CCSNe) and binary neutron star mergers (BNSMs). Under the assumption of homogeneous neutrinos,…

高能天体物理现象 · 物理学 2023-07-19 Chinami Kato , Hiroki Nagakura , Masamichi Zaizen

We make a strong case that the fast neutrino-flavor conversion, one of the collective flavor oscillation modes, commonly occurs in core-collapse supernovae (CCSNe). It is confirmed in the numerical data obtained in realistic simulations of…

高能天体物理现象 · 物理学 2020-03-04 Taiki Morinaga , Hiroki Nagakura , Chinami Kato , Shoichi Yamada

Fast neutrino-flavor conversion (FFC) can nontrivially alter neutrino radiation field in core-collapase supernovae (CCSN) and binary neutron-star merger (BNSM) remnants. However, its interplay with global geometry remains poorly understood…

高能天体物理现象 · 物理学 2026-04-16 Masamichi Zaizen , Hiroki Nagakura

We investigate key methodologies of Bhatnagar-Gross-Krook subgrid modeling for neutrino fast flavor conversions (FFC) in core-collapse supernova based on spherically symmetric Boltzmann radiation hydrodynamics simulations. We first examine…

高能天体物理现象 · 物理学 2025-08-25 Ryuichiro Akaho , Hiroki Nagakura , Shoichi Yamada

We present a systematic study of fast neutrino-flavor conversion (FFC) with both small-scale and large-scale numerical simulations in spherical symmetry. We find that FFCs can, in general, reach a quasi-steady state, and these features in…

高能天体物理现象 · 物理学 2023-04-12 Hiroki Nagakura , Masamichi Zaizen

Merging our supernova code F{\sc{ornax}} with the Box3D fast-flavor neutrino oscillation formalism, we explore the effects of fast-flavor conversion (FFC) in state-of-the-art 1D and 2D core-collapse supernova simulations. We find that after…

高能天体物理现象 · 物理学 2025-05-14 Tianshu Wang , Adam Burrows

The fast flavor conversions (FFCs) of neutrinos generally exist in core-collapse supernovae and binary neutron-star merger remnants, and can significantly change the flavor composition and affect the dynamics and nucleosynthesis processes.…

高能天体物理现象 · 物理学 2023-10-05 Zewei Xiong , Meng-Ru Wu , Sajad Abbar , Soumya Bhattacharyya , Manu George , Chun-Yu Lin

Neutrino-neutrino forward scatterings potentially induce collective neutrino oscillation in dense neutrino gases in astrophysical sites such as core-collapse supernovae (CCSN) and binary neutron star mergers (BNSM). In this paper, we…

高能天体物理现象 · 物理学 2023-05-24 Masamichi Zaizen , Hiroki Nagakura
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