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VERSION:2.0
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SUMMARY:Mini magnetospheres in the laboratory
DTSTART:20220707T140000Z
DTEND:20220707T160000Z
DTSTAMP:20260723T045510Z
UID:c155e485-d82f-4dee-bc60-24e945238032
SEQUENCE:2
CREATED:20220705T103334Z
DESCRIPTION:AbstractThe interaction between plasmas and magnetic obstacles
  often occur in astrophysical and space environments such as in ion-scale 
 “mini magnetospheres”. Such systems display a wide range of physical m
 echanisms and provide a unique environment for studying kinetic-scale plas
 ma physics. In this work\, we present collisionless particle-in-cell (PIC)
  simulations of ion-scale magnetospheres that reproduce recent laboratory 
 experiments performed on the Large Plasma Device (LAPD) at UCLA. In our PI
 C simulations\, a driver plasma flows against a dipolar magnetic field tha
 t is embedded in a uniform magnetized background plasma. The simulations r
 eplicate the main magnetospheric structures observed in the experiments\, 
 namely the magnetopause and the plasma current distributions. We show the 
 formation of a magnetic cavity and a magnetic compression and two main cur
 rent structures in the dayside region. From multiple parameter scans\, we 
 show a reflection of the magnetic compression\, bounded by the length of t
 he driver plasma\, and a higher separation of the main current structures 
 for lower dipolar magnetic moments. Additionally\, we develop a analytical
  model that characterize the coupling between the driver and the magnetize
 d background plasmas. The model is compared with the simulations\, showing
  good agreement.(Contactar Ana Bela Cardoso para password) ana.bela.cardos
 o@tecnico.ulisboa.pt
LAST-MODIFIED:20220705T103358Z
LOCATION:Online
URL:http://df.vps.tecnico.ulisboa.pt/pt/eventos/mini-magnetospheres-in-the
 -laboratory/
X-ALT-DESC;FMTTYPE=text/html:<p data-block-key="aeh9x"></p><p data-block-k
 ey="1b5tm">Abstract</p><p data-block-key="8r40k">The interaction between p
 lasmas and magnetic obstacles often occur in astrophysical and space envir
 onments such as in ion-scale “mini magnetospheres”. Such systems displ
 ay a wide range of physical mechanisms and provide a unique environment fo
 r studying kinetic-scale plasma physics. In this work\, we present collisi
 onless particle-in-cell (PIC) simulations of ion-scale magnetospheres that
  reproduce recent laboratory experiments performed on the Large Plasma Dev
 ice (LAPD) at UCLA. In our PIC simulations\, a driver plasma flows against
  a dipolar magnetic field that is embedded in a uniform magnetized backgro
 und plasma. The simulations replicate the main magnetospheric structures o
 bserved in the experiments\, namely the magnetopause and the plasma curren
 t distributions. We show the formation of a magnetic cavity and a magnetic
  compression and two main current structures in the dayside region. From m
 ultiple parameter scans\, we show a reflection of the magnetic compression
 \, bounded by the length of the driver plasma\, and a higher separation of
  the main current structures for lower dipolar magnetic moments. Additiona
 lly\, we develop a analytical model that characterize the coupling between
  the driver and the magnetized background plasmas. The model is compared w
 ith the simulations\, showing good agreement.</p><p data-block-key="9o5a4"
 ><br/>(Contactar Ana Bela Cardoso para password) ana.bela.cardoso@tecnico.
 ulisboa.pt</p>
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