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Related papers: Neutrino Annihilation in Stellar Magnetic Fields

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In magnetic fields stronger than B_Q = 4.4 X 10^13 Gauss, an electron's Landau excitation energy exceeds its rest energy. I review the physics of this strange regime and some of its implications for the crusts and magneto- spheres of…

Astrophysics · Physics 2009-10-31 Robert C. Duncan

We consider active-sterile neutrino conversions in a supernova in the presence of random magnetic field domains. For large enough fields the magnetization of the medium may enhance the active to sterile neutrino conversion rates. Neglecting…

High Energy Physics - Phenomenology · Physics 2009-09-25 V. Semikoz , J. W. F. Valle

Recent high-resolution calculations of neutron star coalescences are used to investigate whether nu bar{nu} annihilation can provide sufficient energy to power gamma-ray bursts, especially those belonging to the short duration category.…

Astrophysics · Physics 2009-11-07 Stephan Rosswog , Enrico Ramirez-Ruiz

The search for CP violating forces between nucleons in the so-called axion window of force ranges lam between 2x10^-5 m and 0.02 m is interesting because only little experimental information is available there. Axion-like particles would…

The original paper describes neutrino cooling calculations in the presence of asymmetric neutrino opacities due to parity violation in strong magnetic fields. In early April, through the work of P. Arras and D. Lai at Cornell (see…

Astrophysics · Physics 2007-05-23 Dong Lai , Y. -Z. Qian

We study the effects of strong magnetic fields on the neutron star structure. If the interior field of a star is on the same order of the surface field currently observed, the influences of the magnetic field on the star mass and radius are…

Astrophysics · Physics 2014-10-13 Guangjun Mao , Akira Iwamoto , Zhuxia Li

It has been speculated that Lorentz-invariance violation (LIV) might be generated by quantum-gravity (QG) effects. As a consequence, particles may not travel at the universal speed of light. In particular, superluminal extragalactic…

High Energy Astrophysical Phenomena · Physics 2013-06-26 Enrico Borriello , Sovan Chakraborty , Alessandro Mirizzi , Pasquale Dario Serpico

We investigate a stationary particle acceleration zone in the outer magnetosphere of a spinning neutron star. The charge depletion due to a global current causes a large electric field along the magnetic field lines. Migratory electrons…

Astrophysics · Physics 2009-10-31 Kouichi Hirotani , Shinpei Shibata

New limits for the Violation of Equivalence Principle (VEP) are obtained considering the mass-flavor mixing hypothesis. This analysis includes observations of solar and reactor neutrinos and has obtained a limit for the VEP parameter…

High Energy Physics - Phenomenology · Physics 2013-12-09 G. A. Valdiviesso , M. M. Guzzo , P. C. Holanda

We calculate neutrino cross sections from neutral current reactions in the dense matter encountered in the evolution of a newly born neutron star. Effects of composition and of strong interactions in the deleptonization and cooling phases…

Astrophysics · Physics 2008-11-26 Sanjay Reddy , Madappa Prakash

Interaction of magnetic moment of point particles with external electromagnetic fields experiences unresolved theoretical and experimental discrepancies. In this work we point out several issues within the relativistic quantum mechanics and…

High Energy Physics - Phenomenology · Physics 2023-10-10 Martin Formanek , Stefan Evans , Johann Rafelski , Andrew Steinmetz , Cheng-Tao Yang

I summarize recent results about how a neutron star binary coalescence can produce short gamma-ray bursts (GRBs). Two possibilities are discussed: the annihilation of neutrino anti-neutrino pairs above the merged remnant and the exponential…

Astrophysics · Physics 2010-11-11 S. Rosswog

Measurement of the fusion cross-section for neutron-rich light nuclei is crucial in ascertaining if fusion of these nuclei occurs in the outer crust of a neutron star. The fusion excitation function at near-barrier energies for the $^{19}$O…

We consider the expulsion of the magnetic field from the super-conducting core of a neutron star and its subsequent decay in the crust. Particular attention is paid to a strong feedback of the distortion of magnetic field lines in the crust…

Astrophysics · Physics 2009-10-31 D. Konenkov , U. Geppert

The processes of neutrino (antineutrino) absorption and electron (positron) capture on nucleons provide the dominant mechanisms for heating and cooling the material between the protoneutron star and the stalled shock in a core-collapse…

Astrophysics · Physics 2009-11-10 Huaiyu Duan , Yong-Zhong Qian

Previous studies on high-energy gamma-ray burst neutrinos from IceCube suggest a neutrino speed variation at the Lorentz violation~(LV) scale of $\sim 6.4\times 10^{17}$~GeV, with opposite velocity variances between neutrinos and…

High Energy Physics - Phenomenology · Physics 2023-03-31 Chengyi Li , Bo-Qiang Ma

New effects of nontrivial neutrino electromagnetic properties are investigated on the basis of exact solutions of the modified Dirac equations for neutrinos in dense magnetized rotating matter. The effect of spatial separation of different…

High Energy Physics - Phenomenology · Physics 2014-06-11 Alexander Studenikin , Ilya Tokarev

Population III stars are believed to be rapidly-rotating sources with a mass range of hundreds to thousand of solar masses. Masses larger than 260 M$_\odot$ are expected to collapse resulting in central rotating Kerr black holes with large…

High Energy Astrophysical Phenomena · Physics 2014-01-10 Nissim Fraija , Enrique Moreno Mendez

In this work, we study the appearance of neutrino asymmetries during the expansion of the Universe. A mathematical model based on differential equations was used to describe the processes of neutrino oscillations considering CP violation…

High Energy Physics - Phenomenology · Physics 2024-02-29 A. P Serebrov , O. M. Zherebtsov , R. M. Samoilov , N. S. Budanov

Recent experimental data provides evidence for neutrino masses and leads to the possibility of leptonic mixing and CP violation. In this work special attention is dedicated to CP violation in the leptonic sector both at low and at high…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. N. Rebelo