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PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-9596
DTSTART:20260219T203000Z
DTEND:20260219T213000Z
DTSTAMP:20260405T100724Z
LAST-MODIFIED:20260212T162627Z
LOCATION:https://uwmadison.zoom.us/j/93209068655?pwd=tsxmpAnwNt1eovSWT
 4HNyQC2VwEinK.1
SUMMARY:Phase-Aligned TeV Neutrinos from Pulsars and the Physics Behin
 d the Fermi Fundamental Plane\, NPAC (Nuclear/Particle/Astro/Cosmo) Fo
 rum\, Zorawar Wadiasingh\, University of Maryland at College Park
DESCRIPTION:Pulsars are one of nature's most extreme particle accelera
 tors\, as reinforced by the recent HESS-II detection of pulsed multi-T
 eV emission from the Vela pulsar. Fermi-LAT pulsars provide a populati
 on-level laboratory for magnetospheric accelerators and\, potentially\
 , pulsed neutrino production from the outer magnetosphere and equatori
 al current sheet (ECS). Building on ECS models constrained by catalog 
 data and global particle-in-cell simulations\, we interpret the gamma-
 ray “Fundamental Plane” as curvature radiation from particles acce
 lerated near and beyond the light cylinder. At the highest spin-down p
 owers\, both young pulsars and MSPs depart from the maximal (radiation
 -reaction-limited) envelope at similar spectral cutoffs\, consistent w
 ith γγ-induced pair-cascade feedback that screens the accelerating f
 ield in the ECS. Based on these arguments and the same compactness pic
 ture\, we outline a γγ→µ± channel in or near the ECS that could 
 yield phase-aligned (with the GeV/TeV photons) multi-TeV neutrinos\, e
 nabling pulse phase-gated searches that might suppress atmospheric and
  diffuse backgrounds. Representative young pulsars can yield neutrinos
  up to ~10 to 20 TeV\, while optimistic Crab-like regimes can approach
  neutrino luminosities ~10^34 erg/s. Likewise\, a population of MSPs m
 ight contribute in aggregate to the quasi-diffuse Galactic neutrino si
 gnal. These scalings motivate targeted searches and stacking strategie
 s for pulsars below ~100 TeV in neutrinos.
URL:https://www.physics.wisc.edu/events/?id=9596
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