Chapman Conference “Fundamental Properties and Processes of Magnetotails” 12 March 2013, Tuesday,1205-1220 p.m. Structure of Magnetic Reconnection in the.

Slides:

Advertisements

Similar presentations

Grad-Shafranov reconstruction of a bipolar Bz signature in an earthward jet in the tail Hiroshi Hasegawa (2007/02/14)

Advertisements

Anti-Parallel Merging and Component Reconnection: Role in Magnetospheric Dynamics M.M Kuznetsova, M. Hesse, L. Rastaetter NASA/GSFC T. I. Gombosi University.

Near-Earth Magnetotail Reconnection and Plasmoid Formation in Connection With a Substorm Onset on 27 August 2001 S. Eriksson 1, M. Oieroset 2, D. N. Baker.

Non-Equilibrium Ionization Modeling of the Current Sheet in a Simulated Solar Eruption Chengcai Shen Co-authors: K. K. Reeves, J. C. Raymond, N. A. Murphy,

Five Spacecraft Observations of Oppositely Directed Exhaust Jets from a Magnetic Reconnection X-line Extending > 4.3 x 10 6 km in the Solar Wind Gosling.

Studying Solar Wind Magnetic Reconnection Events using the Cluster 4-point Measurement Capability A.C. Foster 1, C.J. Owen 1, A.N. Fazakerley 1, C. Forsyth.

Walen and Slow-mode Shock Analyses Applied to High-Speed Flows of the Near-Earth Magnetotail S. Eriksson 1, C. Mouikis 2, M. W. Dunlop 3, M. Oieroset 4,

1 MAGNETIC FIELD RECONNECTION FROM FIRST PRINCIPLES TO LATEST RESULTS by Forrest Mozer.

Auroral dynamics EISCAT Svalbard Radar: field-aligned beam  complicated spatial structure (

The Structure of the Parallel Electric Field and Particle Acceleration During Magnetic Reconnection J. F. Drake M.Swisdak M. Shay M. Hesse C. Cattell University.

Cutting-Edge Results from Formation Flying Observations Cutting-Edge Results from Formation Flying Observations near Earth’s magnetopause Hiroshi Hasegawa.

Solar Flare Particle Heating via low-beta Reconnection Dietmar Krauss-Varban & Brian T. Welsch Space Sciences Laboratory UC Berkeley Reconnection Workshop.

The CASCADES-II sounding rocket was launched on 20 March 2009 at 11:04:00UT from the Poker Flat Research Range. The payload had five sub- payloads for.

In-situ Observations of Collisionless Reconnection in the Magnetosphere Tai Phan (UC Berkeley) 1.Basic signatures of reconnection 2.Topics: a.Bursty (explosive)

Location of the High-Latitude Reconnection Site on 14 February 2003 S. Eriksson 1, M. M. Kuznetsova 2, M. W. Dunlop 3, and H. Reme 4 1 LASP, University.

A Fermi Model for the Production of Energetic Electrons during Magnetic Reconnection J. F. Drake H. Che M. Swisdak M. A. Shay University of Maryland NRL.

Magnetic Reconnection in Multi-Fluid Plasmas Michael Shay – Univ. of Maryland.

Hamrin, M., Norqvist, P., Marghitu, O., et al. Department of Physics, Umeå University, Sweden Nordic Cluster.

MAGNETOTAIL LOBE POPULATION AS MEASURED BY INTERBALL-1 SATELLITE Koleva R. 1, Grigorenko E. 2, Sauvaud J.-A. 3 (1) Solar-Terrestrial Influences Laboratory,

Studying Solar Wind Magnetic Reconnection Events using Cluster. A.C. Foster 1, C.J. Owen 1, A.N. Fazakerley 1, I. J. Rae 1, C. Forsyth 1, E. Lucek 2, H.

Structure and Detection of Rolled-up Kelvin-Helmholtz Vortices in the Tail Flank of the Magnetosphere H. Hasegawa, M. Fujimoto, T. K. M. Nakamura, K. Takagi.

1 Cambridge 2004 Wolfgang Baumjohann IWF/ÖAW Graz, Austria With help from: R. Nakamura, A. Runov, Y. Asano & V.A. Sergeev Magnetotail Transport and Substorms.

EISCAT Svalbard Radar studies of meso-scale plasma flow channels in the polar cusp ionosphere Y. Dåbakk et al.

Magnetosphere-Ionosphere coupling processes reflected in

Small Scale Magnetic Reconnection in the Solar Wind. A.C. Foster 1, C.J. Owen 1, A.N. Fazakerley 1, I. J. Rae 1, C. Forsyth 1, E. Lucek 2, H. Rème 3 1.UCL,

Anomalous resistivity due to lower-hybrid drift waves. Results of Vlasov-code simulations and Cluster observations. Ilya Silin Department of Physics University.

Reconnection rates in Hall MHD and Collisionless plasmas

PIC simulations of magnetic reconnection. Cerutti et al D PIC simulations of relativistic pair plasma reconnection (Zeltron code) Includes – Radiation.

GEM 2008 Summer Workshop, Zermatt, Utah, June 25, Institute of Geophysics and Planetary Physics University of California, Los Angeles THEMIS observations.

Response of the Magnetosphere and Ionosphere to Solar Wind Dynamic Pressure Pulse KYUNG SUN PARK 1, TATSUKI OGINO 2, and DAE-YOUNG LEE 3 1 School of Space.

ISSI Workshop on Mercury, 26–30 June, 2006, Bern Substorm, reconnection, magnetotail in Mercury Rumi Nakamura Space Research Institute, Austrian Academy.

5. Walen Test analysis The Walen Test results for Cluster 3 are as expected for a reconnection event. The test over the leading edge shows a positive correlation.

Cluster observations of a reconnection site at high- latitude magnetopause Y. Khotyaintsev (1), A. Vaivads (1), Y. Ogawa (1,2), M. André(1), S. Buchert(1),

PHYSICS AND ENGINEERING PHYSICS The Disruption Zone Model of Magnetospheric Substorms George Sofko, Kathryn McWilliams, Chad Bryant I SuperDARN 2011 Workshop,

GEOSYNCHRONOUS SIGNATURES OF AURORAL SUBSTORMS PRECEDED BY PSEUDOBREAKUPS A. Kullen (1), S. Ohtani (2), and H. Singer (3) A. Kullen (1), S. Ohtani (2),

Authors: S. Beyene1, C. J. Owen1, A. P. Walsh1, A. N. Fazakerley1, E

Simulation Study of Magnetic Reconnection in the Magnetotail and Solar Corona Zhi-Wei Ma Zhejiang University & Institute of Plasma Physics Beijing,

Simultaneous in-situ observations of the feature of a typical FTE by Cluster and TC1 Zhang Qinghe Liu Ruiyuan Polar Research Institute of China

Mass Transport: To the Plasma Sheet – and Beyond!

M. Stepanova(1), E. E. Antonova(1, 2), J.M. Bosqued (3) (1)University of Santiago de Chile (2)Skobeltsyn.

Magnetic Reconnection in Plasmas; a Celestial Phenomenon in the Laboratory J Egedal, W Fox, N Katz, A Le, M Porkolab, MIT, PSFC, Cambridge, MA.

Compressibility and scaling in the solar wind as measured by ACE spacecraft Bogdan A. Hnat Collaborators: Sandra C. Chapman and George Rowlands; University.

Sani 1 June 15, 2009 Introduction on bursty flows Particle distributions and ion acceleration Electron acceleration and effects Linear and non-linear waves:

Magnetic reconnection in the magnetotail: Geotail observations T. Nagai Tokyo Institute of Technology World Space Environment Forum 2005 May 4, 2005 Wednesday.

MULTI-INSTRUMENT STUDY OF THE ENERGY STEP STRUCTURES OF O + AND H + IONS IN THE CUSP AND POLAR CAP REGIONS Yulia V. Bogdanova, Berndt Klecker and CIS TEAM.

Particle precipitation has been intensely studied by ionospheric and magnetospheric physicists. As particles bounce along the earth's magnetic fields they.

Finding the Source of Ion Beams in the Solar Wind Hanna Kristensen Advisors: Justin Kasper and Mike Stevens.

Multi-Fluid/Particle Treatment of Magnetospheric- Ionospheric Coupling During Substorms and Storms R. M. Winglee.

MHD Simulations of magnetotail reconnection (J. Birn) Observations MHD simulation: overview Propagation of dipolarization signals Generation of pulsations:

SS Special Section of JGR Space Physics Marks Polar’s 5th Anniversary September 4, 1996 This April special section is first of two Polar special sections.

Magnetotail Reconnection T. Nagai Tokyo Institute of Technology Harry Petschek Symposium on Magnetic Reconnection March 22, 2006 Wednesday 12:00 – 12:30.

1 NSSC National Space Science Center, Chinese academy of Sciences FACs connecting the Ionosphere and Magnetosphere: Cluster and Double Star Observations.

A Global Hybrid Simulation Study of the Solar Wind Interaction with the Moon David Schriver ESS 265 – June 2, 2005.

Chapman Conference “Fundamental Properties and Processes of Magnetotails” 12 March 2013, Tuesday, p.m. Structure of Magnetic Reconnection in the.

This work was supported by NASA grants: Wind grant NNX13AP39G and Cluster grant NNX11AH03G. Motivating Questions Observational Study of Ion Diffusion Region.

Magnetic Reconnection in Solar Flares

PIC code simulations of solar flare processes Astronomical Institute

Global MHD Simulations of Dayside Magnetopause Dynamics.

THEMIS multi-spacecraft observations of a 3D magnetic

THEMIS observations at a substorm onset on March 1, 2008

THEMIS SWG, Annapolis, Sept. 14, 2011 Supported by NSF grant #

The Physics of the Collisionless Diffusion Region

On Feb 12, a minor THEMIS conjunction, TH-C at 18RE in the tail, observed the first indication of reconnection Earthward of it. Substorm ~03:00-04:30UT.

Direct Observations of the Magnetic Reconnection Site of an Eruption on 2003 November ,ApJ, 622,1251 J. Lin, Y.-K. Ko, L. Sui, J. C. Raymond, G.

High-Speed Plasma Flows Observed in the Magnetotail during Geomagemtically Quiet Times: Relationship between Magnetic Reconnection, Substorm and High-Speed.

MHD Simulation of Plasmoid-Induced-Reconnection in Solar Flares

Magnetic reconnection X-line crossing by THEMIS-B on February 7, 2009

THEMIS Dayside Lessons learned from the coast phase and the 1st dayside season Current plans for the 2nd dayside season and the extended phases.

Marit Øieroset UC Berkeley

Presentation transcript:

Chapman Conference “Fundamental Properties and Processes of Magnetotails” 12 March 2013, Tuesday, p.m. Structure of Magnetic Reconnection in the Earth’s Magnetotail Geotail Observations T. NagaiTokyo Institute of Technology 12/8/2015 2:51 AM1

2 20 th Anniversary of Geotail Observations Launch on 24 July 1992 Prof. Atsuhiro Nishida “Person of Cultural Merit” in 2012 (an official Japanese recognition and honor)

12/8/2015 2:51 AM3 20-year Geotail observations 2 clear-cut encounters of the magnetic reconnection site observation observation time probability ion-electron decoupling region 336 s 0.000,000,53 (96+240) electron diffusion region 36 s 0.000,000,057 (12+24)

12/8/2015 2:51 AM4 Magnetic field structure Outflows (electron Vx and ion Vx) Out-of-plane current (electron Vy and ion Vy) Magnetic Reconnection Simulation

12/8/2015 2:51 AM UT 15 May 2003

Tailward flows Earthward flows Bz 0 Tailward flows Earthward flows ion energy-time diagrams 5 minutes Bz > 0 Bz < 0 12/8/2015 2:51 AM6

7 Ve Vi Magnetic field (MGF) Plasma (LEP) Ion and electron Velocity Number density

12/8/2015 2:51 AM8 electron Vx ion Vx ion Vy electron Vy

12/8/2015 2:51 AM9 58 electron Vx ion Vx ion Vy electron Vy electron E-t

12/8/2015 2:51 AM10 -v ix +v ix +v ex -v ex Direct detection of the dissipation region S. Zenitani, I. Shinohara, and T. Nagai, Geophys. Res. Lett., 39, L11102, 2012.

ion-electron decoupling Ve >> Vi intense electron current layer large Vey Spatial Scales MHD 1057: :44 UT 12/8/2015 2:51 AM11

time Bz > 0 Bz < 0 Tailward flowsEarthward flows Bz > 0 Bz < 0 ion velocity distribution functions 1057: :44 UT 12/8/2015 2:51 AM12 Earth tail

+450 km/s -650 km/s Earthward flow speed tailward flow speed MHD flows 12/8/2015 2:51 AM13 Asymmetric MHD outflows

+550 km/s -550 km/s (+450 km/s) (-650 km/s) -100 km/s MHD flows tailward velocity of reconnection site 12/8/2015 2:51 AM14

time Bz > 0 Bz < 0 Tailward flowsEarthward flows Bz > 0 Bz < 0 counter-streaming inflows ion velocity distribution functions 12/8/2015 2:51 AM15

Vx = +64 km/s Vx= -269 km/s inflows 12/8/2015 2:51 AM16 Asymmetric inflows

Vx = +164 km/s Vx= -169 km/s (+264 km/s -269 km/s) -100 km/s inflows Cluster results -100 km/s Baker et al Imada et al tailward velocity of reconnection site 12/8/2015 2:51 AM17 EarthTail

12/8/2015 2:51 AM18 1 i 8 i 8 i = 1.5 R E 1 i = 1200 km Geotail 15 May 2003 V MR = -100 km/s

12/8/2015 2:51 AM UT 05 May 2007

12/8/2015 2:51 AM Ve Vi Magnetic field (MGF) Plasma (LEP) Ion and electron Velocity Number density

12/8/2015 2:51 AM21 electron Vx ion Vx ion Vy electron Vy

12/8/2015 2:51 AM22 Ve Vi Ve electron Vx ion Vx ion Vy electron Vy electron E-t

Vx = km/s Vx= km/s (+375 km/s -500 km/s) km/s tailward velocity of reconnection site 12/8/2015 2:51 AM23

12/8/2015 2:51 AM24 8 i = 1.5 R E 1 i = 1200 km V MR = km/s 1 i 13 i

Main conclusions In the magnetic reconnection site of the near-Earth magnetotail 1.the central intense electron current layer (10 nA/m ) 1 i 2.ion-electron decoupling region 10 i 3.MHD regions outside the i-e decoupling region Nagai, T., I. Shinohara, M. Fujimoto, A. Matsuoka, T. Saito, and T. Mukai, J. Geophys. Res., 116, A04222, Zenitani, S., I. Shinohara, and T. Nagai, Geophys. Res. Lett., 39, L11102, /8/2015 2:51 AM i 10 i

12/8/2015 2:51 AM26 3D structure of magnetic reconnection Locations of Magnetic Reconnection Events 8 R E dawn-dusk width 10 i