2018/09/20 by N. Fraija, C. G. Bernal, G. Morales +2
Physics and Astronomy · #Accretion (finance) #Astrophysics #Astrophysics and Cosmic Phenomena #Gamma-ray bursts and supernovae #Magnetic field #Neutrino #Neutrino Physics Research #Neutron star #Nuclear physics #Physics #Supernova #astro-ph.HE
paper · pdf · doi:10.1103/physrevd.98.083012
18 pages, 7 figures and 4 tables. Accepted for publication in PRD. New reference was added
arxiv created 2018/09/20 · openalex publication_date 2018/10/15 · arxiv updated 2018/11/14 · openalex created_date 2019/06/27 · openalex updated_date 2026/08/05
The measurement of the period and period derivative, and the canonical model of dipole radiation have provided a method to estimate the low superficial magnetic fields in the so-called central compact objects (CCOs). In the present work, a scenario is introduced in order to explain the magnetic behavior of such CCOs. Based on magnetohydrodynamic simulations of the post core-collapse supernova phase during the hypercritical accretion episode, we argue that the magnetic field of a newborn neutron star could have been early buried. During this phase, thermal neutrinos are created mainly by the pair annihilation, plasmon decay, photo-neutrino emission and other processes. We study the dynamics of these neutrinos in this environment and also estimate the number expected of the neutrino events with their flavor ratios on Earth. The neutrino burst is the only viable observable that could provide compelling evidence of the hypercritical phase and therefore, the hidden magnetic field mechanism as the most favorable scenario to explain the anomalous low magnetic fields estimated for CCOs.