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Fluxes of the diffuse supernova neutrino background (DSNB) are calculated based on a new modeling of galactic chemical evolution, where a variable stellar initial mass function (IMF) depending on the galaxy type is introduced and black hole…

高能天体物理现象 · 物理学 2023-08-16 Yosuke Ashida , Ken'ichiro Nakazato , Takuji Tsujimoto

A statistically significant detection of the diffuse supernova neutrino background (DSNB) is around the corner. To this purpose, we assess the contribution to the DSNB of magnetorotational collapses of massive stars, relying on a suite of…

高能天体物理现象 · 物理学 2024-11-01 Pablo Martínez-Miravé , Irene Tamborra , Miguel Ángel Aloy , Martin Obergaulinger

The diffuse cosmic supernova neutrino background (DSNB) is observational target of the gadolinium-loaded Super-Kamiokande (SK) detector and the forthcoming JUNO and Hyper-Kamiokande detectors. Current predictions are hampered by our still…

高能天体物理现象 · 物理学 2021-03-24 Daniel Kresse , Thomas Ertl , Hans-Thomas Janka

The Diffuse Supernova Neutrino Background (DSNB) provides an immediate opportunity to study the emission of MeV thermal neutrinos from core-collapse supernovae. The DSNB is a powerful probe of stellar and neutrino physics, provided that the…

天体物理学 · 物理学 2009-05-01 Shunsaku Horiuchi , John F. Beacom , Eli Dwek

The detection of the diffuse supernova neutrino background (DSNB) will preciously contribute to gauge the properties of the core-collapse supernova population. We estimate the DSNB event rate in the next-generation neutrino detectors,…

高能天体物理现象 · 物理学 2018-05-30 Klaes Moller , Anna M. Suliga , Irene Tamborra , Peter B. Denton

The Diffuse Supernova Neutrino Background (DSNB) is the collection of neutrinos from all core-collapse supernovae (CCSNe) since the beginning of the universe. It is sensitive to the universe's stellar formation history, the fraction of…

高能物理 - 实验 · 物理学 2025-01-16 Andrew D. Santos

Core-collapse supernovae are among the most powerful explosions in the universe, emitting thermal neutrinos that carry away the majority of the gravitational binding energy released. These neutrinos create a diffuse supernova neutrino…

高能天体物理现象 · 物理学 2025-10-09 Shin'ichiro Ando , Nick Ekanger , Shunsaku Horiuchi , Yusuke Koshio

The diffuse supernova neutrino background (DSNB) created by stellar core-collapses throughout cosmic history is on the verge of discovery, with SK-Gd showing early deviations from the background expectation and JUNO starting to take data.…

高能天体物理现象 · 物理学 2025-10-02 Tim Charissé , David Maksimović , George A. Parker , Michael Wurm

We estimate the Diffuse Supernova Neutrino Background (DSNB) using the simulation results for neutron star-forming and black hole-forming stellar collapses from the Garching group. Scenarios with different distributions of black-hole…

高能天体物理现象 · 物理学 2017-11-27 Alankrita Priya , Cecilia Lunardini

The diffuse supernova neutrino background (DSNB) is the constant flux of neutrinos and antineutrinos emitted by all past core collapses in the observable Universe. We study the potential to extract information on the neutrino lifetime from…

高能物理 - 唯象学 · 物理学 2024-01-29 Pilar Iváñez-Ballesteros , M. Cristina Volpe

The diffuse supernova neutrino background (DSNB) is a powerful future tool to constrain core-collapse explosion mechanisms without observation of a nearby event, and the corresponding signal has been calculated for a variety of collapse…

高能天体物理现象 · 物理学 2022-12-28 Alexander Libanov , Andrey Sharofeev

The Diffuse Supernova Neutrino Background (DSNB) is the weak glow of MeV neutrinos and antineutrinos from distant core-collapse supernovae. The DSNB has not been detected yet, but the Super-Kamiokande (SK) 2003 upper limit on the electron…

高能天体物理现象 · 物理学 2011-02-18 John F. Beacom

We present a new, state-of-the-art computation of the Diffuse Supernova Neutrino Background (DSNB), where we use neutrino spectra from multi-dimensional, multi-second core collapse supernova simulations - including both neutron-star and…

高能天体物理现象 · 物理学 2026-01-21 Cecilia Lunardini , Tomoya Takiwaki , Tomoya Kinugawa , Shunsaku Horiuchi , Kei Kotake

The Hyper-Kamiokande (HyperK) experiment is expected to precisely measure the Diffuse Supernova Neutrino Background (DSNB). This requires that the backgrounds in the relevant energy range are well understood. One possible background that…

高能物理 - 唯象学 · 物理学 2022-12-01 Nicole F. Bell , Matthew J. Dolan , Sandra Robles

The sensitivity of current and future neutrino detectors like Super-Kamiokande (SK), JUNO, Hyper-Kamiokande (HK), and DUNE is expected to allow for the detection of the diffuse supernova neutrino background (DSNB). However, the DSNB model…

高能天体物理现象 · 物理学 2024-11-15 Nick Ekanger , Shunsaku Horiuchi , Hiroki Nagakura , Samantha Reitz

The Diffuse Supernova Neutrino Background (DSNB) in the MeV regime represents the cumulative cosmic neutrino emission, predominantly due to core collapse supernovae. We estimate the DSNB flux for different Star Formation Rate Density (SFRD)…

高能天体物理现象 · 物理学 2020-01-22 Samalka Anandagoda , Dieter H. Hartmann , Marco Ajello , Abhishek Desai

I review the physics of the Diffuse Supernova Neutrino flux (or Background, DSNB), in the context of future searches at the next generation of neutrino observatories. The theory of the DSNB is discussed in its fundamental elements, namely…

宇宙学与河外天体物理 · 物理学 2016-05-24 Cecilia Lunardini

In the absence of high-statistics supernova neutrino measurements, estimates of the diffuse supernova neutrino background (DSNB) hinge on the precision of simulations of core-collapse supernovae. Understanding the cooling phase of…

高能天体物理现象 · 物理学 2023-02-15 Nick Ekanger , Shunsaku Horiuchi , Kei Kotake , Kohsuke Sumiyoshi

Neutrinos are unique probes of core-collapse supernova dynamics, especially in the case of black hole (BH) forming stellar collapses, where the electromagnetic emission may be faint or absent. By investigating two 3D hydrodynamical…

高能天体物理现象 · 物理学 2020-07-01 Laurie Walk , Irene Tamborra , Hans-Thomas Janka , Alexander Summa , Daniel Kresse

The Diffuse Supernova Neutrino Background (DSNB) -- a probe of the core-collapse mechanism and the cosmic star-formation history -- has not been detected, but its discovery may be imminent. A significant obstacle for DSNB detection in…

高能物理 - 唯象学 · 物理学 2024-05-07 Bei Zhou , John F. Beacom
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