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SUMMARY:Three-dimensional tearing instability of flux-tube-like magnetic f
 ields
DTSTART:20260415T120000Z
DTEND:20260415T130000Z
DTSTAMP:20260419T191200Z
UID:indico-event-9676@indico.fysik.su.se
DESCRIPTION:Speakers: Vinay Kumar (ICTS / Nordita)\n\nMagnetic reconnectio
 n plays a central role in high-energy astrophysical systems\, often driven
  by the tearing instability. While well understood in two dimensions\, its
  behavior in three dimensions is less clear. In this talk\, I present a mi
 nimal three-dimensional extension to the tearing instability based on a fl
 ux-tube-like magnetic configuration obtained by modulating a 2-D current s
 heet. Using linear theory\, eigenvalue analysis\, and direct numerical sim
 ulations\, we show that tearing-like modes persist even in the absence of 
 a guide field. While the dispersion relation retains its characteristic 2-
 D scaling\, the growth rates are systematically reduced due to modulation-
 induced variations in the inner resistive layer. The resulting dynamics re
 main quasi-2-D locally\, while exhibiting a coherent global 3-D structure\
 , providing a step toward understanding reconnection in realistic astrophy
 sical plasmas.\nhttps://indico.fysik.su.se/event/9676/\n\nhttps://indico.f
 ysik.su.se/event/9676/
LOCATION:Tera
URL:https://indico.fysik.su.se/event/9676/
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