Enhancement or damping of fast neutrino flavor conversions due to collisions

Autor: Rasmus S. L. Hansen, Shashank Shalgar, Irene Tamborra

Publikováno v: Hansen, R S L, Shalgar, S M & Tamborra, I 2022, ' Enhancement or damping of fast neutrino flavor conversions due to collisions ', Physical Review D, vol. 105, no. 12, 123003 . https://doi.org/10.1103/PhysRevD.105.123003

Fast neutrino flavor conversion can occur in core-collapse supernovae or compact binary merger remnants when non-forward collisions are also at play, and neutrinos are not fully decoupled from matter. This work aims to shed light on the conditions un

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f4469b3acb0b150cb4699a8fb1d530f3
https://doi.org/10.1103/physrevd.105.123003

Triangulating black hole forming stellar collapses through neutrinos

Autor: Lila Sarfati, Rasmus S. L. Hansen, Irene Tamborra

Publikováno v: Phys.Rev.D
Phys.Rev.D, 2022, 105 (2), pp.023011. ⟨10.1103/PhysRevD.105.023011⟩
Sarfati, L, Hansen, R S L & Tamborra, I 2022, ' Triangulating black hole forming stellar collapses through neutrinos ', Physical Review D, vol. 105, no. 02, 023011 . https://doi.org/10.1103/PhysRevD.105.023011
Physical Review D

In the event of a black hole (BH) forming stellar collapse, the neutrino signal should terminate abruptly at the moment of BH formation, after a phase of steady accretion. Since neutrinos are expected to reach Earth hours before the electromagnetic s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad165ddd82921db30c7e1878ffa5e7b1
https://hal.archives-ouvertes.fr/hal-03380571

Timing the neutrino signal of a Galactic supernova

Autor: Rasmus S. L. Hansen, Oliver Scholer, Manfred Lindner

Publikováno v: Hansen, R S L, Lindner, M & Scholer, O 2020, ' Timing the neutrino signal of a Galactic supernova ', Physical Review D, vol. 101, no. 12, 123018 . https://doi.org/10.1103/PhysRevD.101.123018
Physical Review

We study several methods for timing the neutrino signal of a Galactic supernova (SN) for different detectors via Monte Carlo simulations. We find that, for the methods we studied, at a distance of $10\,$kpc both Hyper-Kamiokande and IceCube can reach

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0c011c1a3647229c2b9190377394bfb
https://pure.au.dk/ws/files/223683887/PhysRevD.101.123018.pdf

MeV-scale reheating temperature and thermalization of oscillating neutrinos by radiative and hadronic decays of massive particles

Autor: Kazunori Kohri, Thomas Tram, Steen Hannestad, Rasmus S. L. Hansen, Nagisa Hiroshima, Takuya Hasegawa

Publikováno v: Hasegawa, T, Hiroshima, N, Kohri, K, Hansen, R S L, Tram, T & Hannestad, S 2019, ' MeV-scale reheating temperature and thermalization of oscillating neutrinos by radiative and hadronic decays of massive particles ', Journal of Cosmology and Astroparticle Physics, vol. 2019, no. 12, 012, pp. 012 . https://doi.org/10.1088/1475-7516/2019/12/012

From a theoretical point of view, there is a strong motivation to consider an MeV-scale reheating temperature induced by long-lived massive particles with masses around the weak scale, decaying only through gravitational interaction. In this study, w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9080039e7ab67247415adb67c3fe2057
http://arxiv.org/abs/1908.10189

Effect of extended neutrino production region on collective oscillations in supernovae

Autor: Rasmus S. L. Hansen, Alexei Yu. Smirnov

Publikováno v: Hansen, R S L & Smirnov, A Y 2019, ' Effect of extended ν production region on collective oscillations in supernovae ', Journal of Cosmology and Astroparticle Physics, vol. 2019, no. 10, 027 . https://doi.org/10.1088/1475-7516/2019/10/027
Journal of Cosmology and Astroparticle Physics

In supernovae neutrinos are emitted from a region with a width $r_{\rm eff}$ of a few kilometers (rather than from a surface of infinitesimal width). We study the effect of integration (averaging) over such an extended emission region on collective o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7861378729260f7b0cb75efcc7be0c29