Magnetic & Acoustic Waves in the Aurora Jada Maxwell Photo: Michael Klensch Courtesy of

Slides:

Advertisements

Similar presentations

Solar Theory (MT 4510) Clare E Parnell School of Mathematics and Statistics.

Advertisements

NUMERICAL SIMULATION OF A THERMAL PLASMA FLOW CONFINED BY MAGNETIC MIRROR IN A CYLINDRICAL REACTOR Authors: Gabriel Torrente Julio Puerta Norberto Labrador.

Astronomy at Evergreen, 2003 an update from Dr. E.J. Zita Wed.8 Jan at SPSCC, 8:00 pm for the Southwest Washington Astronomical.

Sound Waves From the Northern Lights Photo courtesy of Bjorn Jorgensen, 18 January 2005, near Tromsø, Norway

Mock IGCSE Coordinated science Physics section. P1: THE STRENGTH OF SOLIDS Hookes law – including calculations Moments – calculations Why things balance.

Non-Resonant Quasilinear Theory Non-Resonant Theory.

Chapter 4 Waves in Plasmas 4.1 Representation of Waves 4.2 Group velocity 4.3 Plasma Oscillations 4.4 Electron Plasma Waves 4.5 Sound Waves 4.6 Ion Waves.

6. Wave Phenomena 6.1 General Wave Properties(1) Following Schunk’s notation, we use index 1 to indicate the electric and magnetic wave fields, E 1 and.

Emerging Flux Simulations Bob Stein A.Lagerfjard Å. Nordlund D. Benson D. Georgobiani 1.

Sun-Earth Connections part of a symposium at the Tacoma campus of The Evergreen State College 14.Sept.2001 The Sun and the Earth are both getting hotter.

8/5/08Lecture 2 Part 21 Maxwell’s Equations of the Electromagnetic Field Theory Gauss’s Law – charge makes an electric field The magnetic field is solenoidal.

Photo Acoustic Effect And its usage for spectroscopy.

1 Chromospheric UV oscillations depend on altitude and local magnetic field Noah S. Heller and E.J. Zita, The Evergreen State College, Olympia, WA

Do magnetic waves heat the solar atmosphere? Dr. E.J. Zita The Evergreen State College Fri.30.May 2003 at Reed College NW Section.

Ringing Magnetic Stars A colloquium at the University College of the Cariboo, Kamloops, BC Many stars - including the sun - have magnetic fields, and many.

Sound Waves from the Northern Lights Photo courtesy of Bjorn Jorgensen, 18 January 2005, near Tromsø, Norway

Center for Space Environment Modeling Ward Manchester University of Michigan Yuhong Fan High Altitude Observatory SHINE July.

Reconstructing Active Region Thermodynamics Loraine Lundquist Joint MURI Meeting Dec. 5, 2002.

Hybrid simulations of parallel and oblique electromagnetic alpha/proton instabilities in the solar wind Q. M. Lu School of Earth and Space Science, Univ.

Can magnetic waves in aurorae transform into acoustic waves? Jada Maxwell & E.J. Zita, The Evergreen State College, Olympia, WA Contact: Jada Maxwell,

Chromospheric UV oscillations depend on altitude and local magnetic field Noah S. Heller and E.J. Zita, The Evergreen State College, Olympia, WA

Dispersion diagrams of chromospheric MHD waves in a 2D simulation Chris Dove The Evergreen State College Olympia, WA with Tom Bogdan and E.J. Zita.

Why does the temperature of the Sun’s atmosphere increase with height? Evidence strongly suggests that magnetic waves carry energy into the chromosphere.

14 April 2006 Photo: Daryl Pedersen Crow Pass, AK 14 April 2006 Photo: Dave Parkhurst Matanuska-Susitna Valley, AK Can magnetic waves in the auroral region.

Sound Waves from the Northern Lights Photo courtesy of Bjorn Jorgensen, 18 January 2005, near Tromsø, Norway

Magnetic Waves in Solar Coronal Loops Ryan Orvedahl Stony Brook University Advisor: Aad van Ballegooijen Center for Astrophysics.

The Effect of Sub-surface Fields on the Dynamic Evolution of a Model Corona Goals :  To predict the onset of a CME based upon reliable measurements of.

Solar Physics at Evergreen Dr. E.J. Zita The Evergreen State College American Physical Society – NW section Spokane-Pullman, 21 May.

Do magnetic waves heat the solar atmosphere? Dr. E.J. Zita The Evergreen State College American Geophysical Union SF, Dec.2003 This.

Our Magnetic Sun and its Effects on Earth Dr. E.J. Zita The Evergreen State College Women in Science Symposium 12 April 2006, TESC.

1 Magnetic waves in sheared field regions E.J. Zita, The Evergreen State College, Olympia, WA Abstract How do magnetohydrodynamic (MHD) waves change.

Processes altering seismic amplitudes

5. Simplified Transport Equations We want to derive two fundamental transport properties, diffusion and viscosity. Unable to handle the 13-moment system.

MHD Modeling of the Large Scale Solar Corona & Progress Toward Coupling with the Heliospheric Model.

Introduction to Physical Systems Dr. E.J. Zita, The Evergreen State College, 30.Sept.02 Lab II Rm 2272, Program syllabus,

Dispersion diagrams of chromospheric MHD waves in a 2D simulation Chris Dove The Evergreen State College Olympia, WA with Tom Bogdan and E.J. Zita.

990901EIS_RR_Science.1 Science Investigation Goals and Instrument Requirements Dr. George A. Doschek EIS US Principal Investigator Naval Research Laboratory.

Physical analogies between solar chromosphere and earth’s ionosphere Hiroaki Isobe (Kyoto University) Acknowledgements: Y. Miyoshi, Y. Ogawa and participants.

Coronal Heating of an Active Region Observed by XRT on May 5, 2010 A Look at Quasi-static vs Alfven Wave Heating of Coronal Loops Amanda Persichetti Aad.

Overview of equations and assumptions Elena Khomenko, Manuel Collados, Antonio Díaz Departamento de Astrofísica, Universidad de La Laguna and Instituto.

CSI /PHYS Solar Atmosphere Fall 2004 Lecture 09 Oct. 27, 2004 Ideal MHD, MHD Waves and Coronal Heating.

The Digital Demo Room One-Dimensional Hydrodynamics Simulator Conley “Lee” Ditsworth under the care and feeding of Dr. Charles F. Gammie and close supervision.

Ch. 26.1: Our Sun!.

Evolution of Emerging Flux and Associated Active Phenomena Takehiro Miyagoshi (GUAS, Japan) Takaaki Yokoyama (NRO, Japan)

Solar Physics at Evergreen Dr. E.J. Zita The Evergreen State College Southwest Washington Astronomical Society 12 Jan. 2005, SPSCC.

Solar Properties Has more than 99% the mass of our solar system Has more than 99% the mass of our solar system Diameter: 1,390,000 km Diameter: 1,390,000.

Surface Plasmon Resonance

Copyright © 2009 Pearson Education, Inc. Energy in EM Waves: The Poynting Vector.

Thermal Properties of Materials

Shock heating by Fast/Slow MHD waves along plasma loops

Turbulent Convection and Anomalous Cross-Field Transport in Mirror Plasmas V.P. Pastukhov and N.V. Chudin.

Our Star the Sun. The Sun – Our Star Our sun is considered an “average” star and is one of the 200 BILLION stars that make up the Milky Way galaxy. But.

Kinetic-Fluid Model for Modeling Fast Ion Driven Instabilities C. Z. Cheng, N. Gorelenkov and E. Belova Princeton Plasma Physics Laboratory Princeton University.

Introduction to Space Weather Jie Zhang CSI 662 / PHYS 660 Spring, 2012 Copyright © The Sun: Magnetic Structure Feb. 16, 2012.

FEASIBILITY ANALYS OF AN MHD INDUCTIVE GENERATOR COUPLED WITH A THERMO - ACOUSTIC ENERGY CONVERSION SYSTEM S. Carcangiu 1, R. Forcinetti 1, A. Montisci.

The Sun The SUN Chapter 29 Chapter 29.

 Potential energy can transform into kinetic energy or kinetic energy can transform into potential energy. Ex: When a rubber band is stretched, kinetic.

Acoustic mapping technology

SUN COURSE - SLIDE SHOW 7 Today: waves.

Magneto-acoustic Effects in Stellar Winds

Introduction to Space Weather

Earth’s Ionosphere Lecture 13

1. Numerical Simulation in Real Time Operation

A graphing calculator is required for some problems or parts of problems 2000.

Coronal Loop Oscillations observed by TRACE

The Centre of the Solar System Earth Science 11

The Sun Fusion: E = mc2 What is Plasma? The 4th state of matter containing charged particles.

How air temperature affects the speed of sound

Generation of Alfven Waves by Magnetic Reconnection

Presentation transcript:

Magnetic & Acoustic Waves in the Aurora Jada Maxwell Photo: Michael Klensch Courtesy of

Can magnetic waves in the aurora transform into acoustic waves?

Magnetic Waves Earth

Transform into Sound Waves Earth

 Alfvén waves (s-mode)  Magnetosonic (like acoustic waves=p-mode) Types of Magnetic Waves Images courtesy of Georgia State University BBC animations

Velocity of Waves

Beta

Plasma is like Rubber Bands in Jello

LocationAltitude (km) Fairbanks, Ak120 Seattle, Wa120 Equator150 Where Does Beta=1?

Image courtesy of Graph made from data obtained at Earth’s Atmosphere

Calculating Magnetic Pressure (P B )

Calculating Gas Pressure (P G )

Calculating Velocity of Acoustic Waves (C S )

Calculating Velocity of Alfvén Wave (V A )

Calculations for Fairbanks, Ak

LocationAltitude (km) Fairbanks, Ak120 Seattle, Wa120 Equator150 Where Does Beta=1?

How does atmospheric heating from auroral processes affect Beta? At what frequencies do these waves occur? How much does wave transformation contribute to infrasound compared with the gas expansion theory? More Questions to Investigate

Sources: Thanks to Dr. E.J. Zita for her guidance and helpful discussions Johnson, M.C., Petty-Powell, Sarah and Zita, E.J., ‘Energy Transport by MHD Waves Above the Photosphere Numerical Simulations,’ 17 Oct 2002 Michael Klensch Courtesy of Graph made from data obtained at Georgia State University