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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:4
UID:UW-Physics-Event-6701
DTSTART:20220304T213000Z
DTEND:20220304T223000Z
DTSTAMP:20260414T153726Z
LAST-MODIFIED:20220301T145635Z
LOCATION:2103 Chamberlin Hall
SUMMARY:Extreme Plasma Astrophysics\, Physics Department Colloquium\, 
 Dmitri Uzdensky\, University of Colorado
DESCRIPTION:Physical conditions in plasma environments of exotic relat
 ivistic objects like neutron stars and black holes can be extreme and 
 very different from those in more familiar\, traditional heliospheric 
 and laboratory plasmas.  The richer physics of these extreme astrophys
 ical plasmas includes the effects of special and general relativity\, 
 pair-plasma composition\, strong interaction between plasma particles 
 and high-energy photons\, and\, in the most extreme cases\, QED effect
 s like pair production and annihilation. Understanding how these “ex
 otic” physical effects modify fundamental collective plasma processe
 s — such as waves\, instabilities\, magnetic reconnection\, shocks\,
  turbulence — is the scope of Extreme Plasma Astrophysics — an cha
 llenging and exciting frontier of modern physics.  I will review the r
 ecent rapid progress in exploring this frontier\, motivated by spectac
 ular astrophysical discoveries and enabled by recent computational adv
 ances like the development of novel kinetic plasma codes incorporating
  radiation and pair-creation effects\, in combination with vigorous\, 
 concerted theoretical efforts. Examples include new breakthroughs in o
 ur understanding of radiative relativistic magnetic reconnection and t
 urbulence\,  with applications to accreting black holes and neutron st
 ar magnetospheres. I will also outline the key future directions of th
 is burgeoning field\, including for laboratory studies. 
URL:https://www.physics.wisc.edu/events/?id=6701
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