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Paolo Scarsi, IASF-CNR Palermo.

Meteor observation by EUSO Paolo Scarsi IASF/CNR Palermo. Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL. Atmospheric phenomena observed by EUSO: (UV emission in the 300 – 400 nm). Fluorescence and Čerenkov associated with the EAS development.

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Paolo Scarsi, IASF-CNR Palermo.

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  1. Meteor observation by EUSO Paolo Scarsi IASF/CNR Palermo Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

  2. Atmospheric phenomena observed by EUSO: (UV emission in the 300 – 400 nm) Fluorescenceand Čerenkov associated with the EAS development. Meteors. Atmospheric electrical discharges(Linghting, Sprites, Elves, Blue Jets...) Cloud system and aereosol components (LIDAR). Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

  3. Meteors • Meteor Light Curves show a UV component. • EUSO investigates meteors via their photometric emission (no spectroscopy). • EUSO will sistematically survey for meteor tracks in a large atmospheric volume with a very high sensitivity (“down” to M~18). • EUSO will providelarge sets of data during its 3 year mission. Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

  4. Scientific Objectives of EUSO related to Meteors • Survey of the solid body population present at the Earth’s orbit around the Sun. a) Time/Space statistics to validate numerical flux models for “trackable” and “non trackable” solid objects. b) Identification of possible minor streams inside the sporadic meteor population • Calibration on known periodic streams (Leonids, Perseids, ...). • Information about meteoroid mass/velocity distribution. • Validation of solid bodies Distribution Models. Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

  5. EUSO and Meteors: present status of ongoing activity • Simulation of Meteor UV emission based on a simple ablation model has been completed. Meteor Light Curves Reference documents (available on Livelink): EUSO-SIM-REP-008-1.pdf EUSO-SDA-REP-013-1.pdf Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

  6. EUSO and Meteors: activity in progress • Deconvolution from observation. • Mass (down to micrometeorites). • Velocity • Population Statistics Signal End to End simulation foreseen for end of Phase-A. Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

  7. END Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

  8. West East View is toward North, 26o down from the horizontal, along the ARGOS orbit plane. From the NRL report: ”…the image showed a definite "tail” and central streak of brightness concentration, as would be expected for a meteor entering Earth’s atmosphere. At the time of the exposure, the ARGOS spacecraft was about 20 south of the equator, over the south Pacific Ocean”. Close Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

  9. Energy conversion in meteor phenomena SIMULATION Close Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

  10. Meteor Light Curve: an example Entry Velocity = 72 km/s Entry Angle =30o Entry Mass = 0.001 kg Note EUSO is in orbit at 400 km, so we can observe only the portion of the light curve below this altitude. We can track to the entry altitude of the meteoroid by analyzing the shape of the track observed. Close Paolo Scarsi, IASF-CNR Palermo. EUSO General Meeting 19-23 May 2003, NSSTC, Huntsville, AL

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