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Analysis of a Blowout in Galaxy NGC 3628 Using Infrared Polarization

Analysis of a Blowout in Galaxy NGC 3628 Using Infrared Polarization. By Megan Teckman 2002 - 2003. Introduction. The question addressed in this project was whether a blowout exists in galaxy NGC 3628. M 82. Spiral galaxy Edge on Dust belt Radio and X-ray emissions Magnetic field

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Analysis of a Blowout in Galaxy NGC 3628 Using Infrared Polarization

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  1. Analysis of a Blowout in Galaxy NGC 3628 Using Infrared Polarization By Megan Teckman 2002 - 2003

  2. Introduction • The question addressed in this project was whether a blowout exists in galaxy NGC 3628. • M 82

  3. Spiral galaxy Edge on Dust belt Radio and X-ray emissions Magnetic field Dust IR Blowout

  4. Purpose • The purpose of this project was to ratify the existence of a blowout by mapping the magnetic field using images taken in polarized IR.

  5. NASA Infrared Telescope Research Facility Mauna Kea, Hawaii Image from http://www.ifa.hawaii.edu/mko/maunakea.htm

  6. Methods • Infrared Reduction and Analysis Facility (IRAF). • Cropping & sorting.

  7. Sky Subtraction - = Original Galaxy Image Surrounding Sky Sky-subtracted Image

  8. - = “Lights On” “Lights Off” “Flat” • Creating Flat Fields • Averaging

  9. Fixing Pixels (fixpix) • Normalizing

  10. Flat Fielding • Centering • Shifting

  11. Smoothing • Masking • Translating

  12. Axum vector plotting

  13. Results

  14. Discussion • The magnetic field skewed perpendicularly • Suggests blowout • The practical applications • expanded knowledge • effectiveness of analyses

  15. Further Study • 3 x 3 pixel box • Observation of the brighter regions

  16. Acknowledgments • Dr. Terry Jay Jones • April Homich and Garret Kuchta • Mrs. Lois Fruen and Ms. Chelen Johnson • Dr. Dave Thomas and Dr. Ian Armitage • Team Research

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