Charm contribution to ultrahigh-energy neutrinos from newborn magnetars

Abstract

Newborn, strongly magnetized neutron stars (so-called magnetars) surrounded by their stellar or merger ejecta are expected to be sources of ultrahigh-energy neutrinos via decay of mesons produced in hadronic interactions of protons which are accelerated to ultrahigh energies by magnetic dissipation of the spindown energy. We show that not only pions and kaons but also charm hadrons, which are typically neglected due to their small production cross sections, can represent dominant contributions to neutrino fluence at ultrahigh energies, because of their short lifetimes, while the ultrahigh-energy neutrino fluence from pion and kaon production is suppressed at early times due to their significant cooling before their decay. We show that the next-generation detectors such as Probe Of Extreme Multi-Messenger Astrophysics (POEMMA), Giant Radio Array for Neurtino Detection (GRAND) and IceCube-Gen2 have a good chance of observing neutrinos, primarily originating from charm hadrons, from nearby magnetars. We also show that neutrinos from nearby magnetar-driven merger novae could be observed in the time interval between $10^2$ s and $10^3$ s, where the charm hadron contribution is dominant for neutrino energies above $10^8$ GeV, of relevance to next generation detectors. We also comment on potential impacts of the charm hadron contribution to the diffuse neutrino flux.

13 pages, 7 figures. Accepted for publication in PRD

References in corpus (12)

• Cosmic Star Formation History
• Physics of Strongly Magnetized Neutron Stars
• The strongest cosmic magnets: Soft Gamma-ray Repeaters and Anomalous X-ray Pulsars
• Hadronic interaction model Sibyll 2.3d and extensive air showers
• Characteristics of the diffuse astrophysical electron and tau neutrino flux with six years of IceCube high energy cascade data
• Production of the entire range of r-process nuclides by black hole accretion disc outflows from neutron star mergers
• Perturbative charm production and the prompt atmospheric neutrino flux in light of RHIC and LHC
• Prompt atmospheric neutrino fluxes: perturbative QCD models and nuclear effects
• High-Energy Neutrinos from Millisecond Magnetars formed from the Merger of Binary Neutron Stars
• Gamma-Ray and Hard X-Ray Emission from Pulsar-Aided Supernovae as a Probe of Particle Acceleration in Embryonic Pulsar Wind Nebulae
• Ultrahigh energy cosmic ray acceleration in newly born magnetars and their associated gravitational wave signatures
• Charm decay in slow-jet supernovae as the origin of the IceCube ultra-high energy neutrino events

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• High-energy neutrino signatures from pulsar remnants of binary neutron-star mergers: coincident detection prospects with gravitational waves
• Two-detector flavor sensitivity to ultra-high-energy cosmic neutrinos
• Structure functions from renormalization group improved small $x$ evolution
• Energy-dependent flavour ratios in neutrino telescopes from charm
• Magnetar-powered Neutrinos and Magnetic Moment Signatures at IceCube
• Effects of Annihilation with Low-Energy Neutrinos on High-Energy Neutrinos from Binary Neutron Star Mergers and Rare Core-Collapse Supernovae
• Observational strategies for ultrahigh-energy neutrinos: the importance of deep sensitivity for detection and astronomy